0001289308-24-000018 | 10-K | XBRL Viewer

Leases (Tables)

12 Months Ended

Mar. 31, 2024

Supplemental Balance Sheet Information Related To Leases

The following table presents lease assets and liabilities and their balance sheet classification:


	Classification	As of March 31, 2024		As of March 31, 2023
Operating Leases:
Right-of-use assets	Other assets	$	76,413	$	85,237
Operating lease current liabilities	Accrued expenses	19,280		21,230
Operating lease non-current liabilities	Other liabilities	61,687		66,555
Finance Leases:
Right-of-use assets	Property, plant, and equipment, net	$	878	$	342
Finance lease current liabilities	Current portion of finance leases	237		90
Finance lease non-current liabilities	Finance leases	647		254

Components Of Lease Expense

The components of lease expense for the fiscal years ended March 31, 2024 and March 31, 2023 were as follows:


	Classification	March 31, 2024		March 31, 2023
Operating Leases:
Operating lease cost	Operating expenses	$	28,030	$	20,232
Variable lease cost	Operating expenses	11,669		9,816
Short term lease cost	Operating expenses	8,078		4,310
Finance Leases:
Depreciation	Operating expenses	$	297	$	95
Interest expense	Interest expense	57		10
Total		$	48,131	$	34,463

Weighted Average Lease Term And Discount Rates

The following table presents the weighted average lease term and discount rates for leases as of March 31, 2024 and March 31, 2023:

March 31, 2024

March 31, 2023

Operating Leases:

Weighted average remaining lease term (years)

5.5 years

5.9 years

Weighted average discount rate

5.38%

4.93%

Finance Leases:

Weighted average remaining lease term (years)

3.8 years

3.7 years

Weighted average discount rate

7.4%

6.79%

Maturity Of Operating Lease Liability

The following table presents future payments due under leases reconciled to lease liabilities as of March 31, 2024:


	Finance Leases		Operating Leases
Year ended March 31,
2025	$	290	$	22,890
2026	256		20,048
2027	232		16,819
2028	194		13,200
2029	39		7,846
Thereafter	—		13,224
Total undiscounted lease payments	1,012		94,026
Present value discount	128		13,059
Lease liability	$	884	$	80,967

Maturity Of Finance Lease Liability

The following table presents future payments due under leases reconciled to lease liabilities as of March 31, 2024:


	Finance Leases		Operating Leases
Year ended March 31,
2025	$	290	$	22,890
2026	256		20,048
2027	232		16,819
2028	194		13,200
2029	39		7,846
Thereafter	—		13,224
Total undiscounted lease payments	1,012		94,026
Present value discount	128		13,059
Lease liability	$	884	$	80,967

Supplemental Cash Flow Information Related To Leases

The following table presents supplemental disclosures of cash flow information related to leases for the fiscal years ended March 31, 2024 and March 31, 2023:


	March 31, 2024		March 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	57	$	15
Operating cash flows from operating leases	27,406		27,176
Financing cash flows from finance leases	275		151
Supplemental non-cash information on lease liabilities arising from right-of-use assets:
Right-of-use assets obtained in exchange for new finance lease liabilities	$	811	$	254
Right-of-use assets obtained in exchange for new operating lease liabilities	31,284		24,423

Stock-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary Of Stock Option Activity

For purposes of determining the fair value of stock options granted, the Company used a Black-Scholes Model with the following assumptions:


	2024		2023		2022
Risk-free interest rate	4.24	%	2.92	%	0.89	%
Dividend yield	0.95	%	0.99	%	0.76	%
Expected life (years)	6		6		6
Volatility	38.3	%	37.4	%	37.3	%

The following table summarizes the Company’s stock option activity in the years indicated:


	Number of Options	Weighted- Average Remaining Contract Term (Years)	Weighted- Average Exercise Price		Aggregate Intrinsic Value
Options outstanding as of March 31, 2021	799,501	7.8	$	72.31	$	14,781
Granted	246,222		97.32		—
Exercised	(42,640)		65.71		1,079
Forfeited	(27,478)		71.26		520
Expired	—		—		—
Options outstanding as of March 31, 2022	975,605	7.5	$	78.94	$	3,605
Granted	310,140		75.33		—
Exercised	(75,180)		65.22		1,561
Forfeited	(9,575)		80.05		39
Expired	(4,679)		85.12		—
Options outstanding as of March 31, 2023	1,196,311	7.3	$	78.83	$	12,150
Granted	200,314		101.04		—
Exercised	(197,350)		71.81		6,110
Forfeited	(9,166)		78.68		158
Expired	—		—		—
Options outstanding as of March 31, 2024	1,190,109	7.0	$	83.74	$	15,043
Options exercisable as of March 31, 2024	713,932	5.9	$	79.70	$	11,178
Options vested and expected to vest, as of March 31, 2024	1,176,995	7.0	$	83.66	$	14,944

Summary Of Information Regarding Stock Options Outstanding And Exercisable

The following table summarizes information regarding stock options outstanding as of March 31, 2024:


Range of Exercise Prices	Number of Options	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price
$57.60-$60.00	98,680	5.0	$	57.73
$60.01-$70.00	26,118	0.9	$	68.76
$70.01-$80.00	423,674	7.4	$	75.50
$80.01-$90.00	219,580	5.3	$	83.00
$90.01-$100.00	140,375	8.3	$	93.16
$100.01-$104.18	281,682	8.3	$	102.51
	1,190,109	7.0	$	83.74

Summary Of The Changes In Restricted Stock Units And Market Share Units

A summary of the changes in restricted stock units, including DSU's, and TSRs awarded to employees and directors that were outstanding under the Company’s equity compensation plans during fiscal 2024 is presented below:


	Restricted Stock Units (RSU)			Market condition-based Share Units (TSR)
	Number of RSU	Weighted- Average Grant Date Fair Value		Number of TSR	Weighted- Average Grant Date Fair Value
Non-vested awards as of March 31, 2023	1,009,783	$	65.48	31,653	$	62.19
Granted	299,284	92.44		—	—
Stock dividend	8,987	68.55		61	62.80

Vested	(262,315)	72.63		(30,582)	62.02
Forfeitures	(32,903)	79.36		—	—
Non-vested awards as of March 31, 2024	1,022,836	$	69.24	1,132	$	66.89

Other (Income) Expense, Net

12 Months Ended

Mar. 31, 2024

Other Income and Expenses [Abstract]

Other (Income) Expense, Net

Other (income) expense, net consists of the following:


	Fiscal year ended March 31,
	2024		2023		2022
Cost of Funds Asset Securitization	$	8,776	$	2,314	$	—
Non-service components of pension expense	1,530		315		430
Foreign exchange transaction (gains) losses	(6,053)		671		(7,169)
Other	5,178		4,893		1,274
Total	$	9,431	$	8,193	$	(5,465)

Retirement Plans (Tables)

12 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Components Of Net Periodic Pension Cost

Net periodic pension cost for fiscal 2024, 2023 and 2022, includes the following components:


	United States Plans						International Plans
	Fiscal year ended March 31,						Fiscal year ended March 31,
	2024		2023		2022		2024		2023		2022
Service cost	$	—	$	—	$	—	$	884	$	918	$	1,114
Interest cost	657		582		517		2,215		1,715		1,427
Expected return on plan assets	(424)		(455)		(526)		(1,244)		(2,005)		(2,200)
Amortization and deferral	—		—		7		326		478		1,205

Net periodic benefit cost	$	233	$	127	$	(2)	$	2,181	$	1,106	$	1,546

Summary Of Change In Projected Benefit Obligation

The following table sets forth a reconciliation of the related benefit obligation, plan assets, and accrued benefit costs related to the pension benefits provided by the Company for those employees covered by defined benefit plans:


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024		2023
Change in projected benefit obligation
Benefit obligation at the beginning of the period	$	14,056	$	16,205	$	51,718	$	70,833
Service cost	—		—		884		918
Interest cost	657		582		2,215		1,715

Benefits paid, inclusive of plan expenses	(865)		(843)		(2,353)		(2,052)
Plan curtailments and settlements	—		—		—		—
Plan combinations	—		—		1,835		—
Actuarial (gains) losses	(535)		(1,888)		633		(15,995)
Foreign currency translation adjustment	—		—		874		(3,701)
Benefit obligation at the end of the period	$	13,313	$	14,056	$	55,806	$	51,718

Summary Of Change In Plan Assets


Change in plan assets
Fair value of plan assets at the beginning of the period	$	13,975	$	16,166	$	40,104	$	42,067
Actual return on plan assets	2,043		(1,348)		(7,717)		(3,722)
Employer contributions	—		—		1,655		6,428
Benefits paid, inclusive of plan expenses	(865)		(843)		(2,353)		(2,052)
Plan curtailments and settlements	—		—		—		—
Foreign currency translation adjustment	—		—		874		(2,617)
Fair value of plan assets at the end of the period	$	15,153	$	13,975	$	32,563	$	40,104
Funded status surplus (deficit)	$	1,840	$	(81)	$	(23,243)	$	(11,614)

Summary Of Amounts Recognized In The Balance Sheets


	March 31,
	2024		2023
Amounts recognized in the Consolidated Balance Sheets consist of:
Non-current assets	$	5,606	$	14,147
Accrued expenses	(1,497)		(1,314)
Other liabilities	(25,512)		(24,528)
Funded status deficit	$	(21,403)	$	(11,695)

Summary Of Amounts In AOCI Before Taxes

The following table represents pension components (before tax) and related changes (before tax) recognized in AOCI for the Company’s pension plans for the years ended March 31, 2024, 2023 and 2022:


	Fiscal year ended March 31,
	2024		2023		2022
Amounts recorded in AOCI before taxes:
Prior service cost	$	(85)	$	(128)	$	(174)
Net loss	(9,590)		(2,307)		(14,049)
Net amount recognized	$	(9,675)	$	(2,435)	$	(14,223)

The following table represents changes in plan assets and benefit obligations recognized in AOCI for the Company’s pension plans for the years ended March 31, 2024, 2023 and 2022:

Summary Of Changes In AOCI


	Fiscal year ended March 31,
	2024		2023		2022
Changes in plan assets and benefit obligations:
New prior service cost	$	—	$	—	$	—
Net loss (gain) arising during the year	7,439		(10,352)		(9,362)
Effect of exchange rates on amounts included in AOCI	127		(957)		(883)
Amounts recognized as a component of net periodic benefit costs:
Amortization of prior service cost	(42)		(41)		(45)
Amortization or settlement recognition of net loss	(284)		(438)		(1,167)
Total recognized in other comprehensive (income) loss	$	7,240	$	(11,788)	$	(11,457)

Summary Of Recognized Components Of Net Periodic Pension Cost Included In Accumulated Other Comprehensive Income

The amounts included in AOCI as of March 31, 2024 that are expected to be recognized as components of net periodic pension cost (before tax) during the next twelve months are as follows:


Prior service cost	$	(42)
Net loss	(465)
Net amount expected to be recognized	$	(507)

Summary Of Accumulated Benefit Obligation Related To All Defined Pension Plans

The accumulated benefit obligation related to all defined benefit pension plans and information related to unfunded and underfunded defined benefit pension plans at the end of each fiscal year are as follows:


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024		2023
All defined benefit plans:
Accumulated benefit obligation	$	13,313	$	14,056	$	53,169	$	49,290
Unfunded defined benefit plans:
Projected benefit obligation	$	—	$	—	$	27,009	$	25,562
Accumulated benefit obligation	—		—		24,930		23,704
Defined benefit plans with a projected benefit obligation in excess of the fair value of plan assets:
Projected benefit obligation	$	—	$	11,671	$	27,009	$	25,908
Fair value of plan assets	—		11,403		—		335
Defined benefit plans with an accumulated benefit obligation in excess of the fair value of plan assets:
Projected benefit obligation	$	—	$	11,671	$	27,009	$	25,562
Accumulated benefit obligation	—		11,671		24,930		23,704
Fair value of plan assets	—		11,403		—		—

Significant Assumptions Used To Determine The Net Periodic Benefit Cost

Significant assumptions used to determine the net periodic benefit cost for the U.S. and International plans were as follows:


	United States Plans						International Plans
	Fiscal year ended March 31,						Fiscal year ended March 31,
	2024		2023		2022		2024	2023	2022
Discount rate	4.9	%	3.7	%	3.0	%	3.5%-6.0%	1.5%-5.4%	0.5%-2.3%
Expected return on plan assets	5.5		5.5		5.5		4.0-4.7	3.1-5.3	2.7-5.3
Rate of compensation increase	N/A		N/A		N/A		2.3-4.5	1.8-5.5	1.5-4.0

N/A = not applicable

Significant Assumptions Used To Determine The Projected Benefit Obligations

Significant assumptions used to determine the projected benefit obligations for the U.S. and International plans were as follows:


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024	2023
Discount rate	5.2	%	4.9	%	3.8%-5.3%	3.5%-6%

Rate of compensation increase	N/A		N/A		2.5-4.5	2.3-4.5

N/A = not applicable

Summary Of Pension Plan Investments Measured At Fair Value

The following table represents the Company's pension plan investments measured at fair value as of March 31, 2024 and 2023 and the basis for that measurement:


	March 31, 2024
	United States Plans								International Plans
	Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset category:
Cash and cash equivalents	$	5,473	$	5,473	$	—	$	—	$	3,752	$	3,752	$	—	$	—
Equity securities
US(a)	—		—		—		—		—		—		—		—
International(b)	—		—		—		—		—		—		—		—
Fixed income(c)	9,680		9,680		—		—		314		—		314		—
Other investments(d)	—		—		—		—		28,497		—		—		28,497
Total	$	15,153	$	15,153	$	—	$	—	$	32,563	$	3,752	$	314	$	28,497


	March 31, 2023
	United States Plans								International Plans
	Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset category:
Cash and cash equivalents	$	1,714	$	1,714	$	—	$	—	$	7,775	$	7,775	$	—	$	—
Equity securities
US(a)	8,308		8,308		—		—		—		—		—		—
International(b)	—		—		—		—		—		—		—		—
Fixed income(c)	3,953		3,953		—		—		32,329		—		32,329		—
Total	$	13,975	$	13,975	$	—	$	—	$	40,104	$	7,775	$	32,329	$	—

The fair values presented above were determined based on valuation techniques to measure fair value as discussed in Note 1.

(a)US equities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Active and passive management strategies are employed. Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks.

(b)International equities are invested in companies that are traded on exchanges outside the U.S. and are well diversified by industry sector, country and equity style. Active and passive strategies are employed. The vast majority of the investments are made in companies in developed markets with a small percentage in emerging markets.

(c)Fixed income consists primarily of investment grade bonds from diversified industries.

(d)Other investments consists of a buy-in annuity insurance contract. The fair value of the buy-in policy is set equal to the value of the obligations as determined by the actuary. This value is considered Level 3 due to the use of the significant unobservable inputs.

Level 3 Rollforward

The following presents our Level 3 Rollforward for our defined pension plan assets:


Beginning of year balance as of March 31, 2023	$	—
Actual return on plan assets, relating to assets still held at the reporting date	$	(2,945)
Purchases	$	31,287
Change due to exchange rate changes	$	155
End of year balance as of March 31, 2024	$	28,497

Summary Of Estimated Future Benefit Payments

Estimated future benefit payments under the Company’s pension plans are as follows:



2025	$	3,328
2026	3,312
2027	3,454
2028	4,236
2029	4,616
Years 2030-2034	23,925

Restructuring Plans and Other Exit Charges

12 Months Ended

Mar. 31, 2024

Restructuring and Related Activities [Abstract]

Restructuring, Exit and Other Charges

Restructuring Programs

The Company had committed to various restructuring plans aimed at improving operational efficiencies across its lines of business. A substantial portion of these plans are complete, with an estimated $2,276 remaining to be incurred by the end of fiscal 2025, mainly related to plans started in fiscal 2024. Restructuring and exit charges for the reportable segments are as follows:

During fiscal 2024, the Company recorded charges related to our fiscal 2024 and fiscal 2023 programs in the Energy Systems and Motive Power segments to improve operational efficiencies. The charges related to severance payments and amounted to $4,468 to approximately 146 employees in the Energy Systems’ segment and $2,713 to approximately 37 employees in the Motive Power segment.

During fiscal 2023, the Company recorded charges related to our fiscal 2022 programs in the Energy Systems segment to improve operational efficiencies. The charges related to severance payments and amounted to $1,230 to approximately 9 employees in the Energy Systems’ segment.

During fiscal 2022, the Company announced and completed restructuring programs in the Energy Systems segment to improve operational efficiencies. The charges related to severance payments and amounted to $1,284 to approximately 10 employees in the Energy Systems’ segment.

Restructuring and exit charges for fiscal 2024, 2023 and 2022 by reportable segments are as follows:


	Fiscal year ended March 31, 2024
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	4,526	$	3,445	$	35	$	8,006
Exit charges	4,312		8,253		7,532		20,097
Restructuring and other exit charges	$	8,838	$	11,698	$	7,567	$	28,103


	Fiscal year ended March 31, 2023
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	1,318	$	327	$	42	$	1,687
Exit charges	123		12,537		2,092		14,752
Restructuring and other exit charges	$	1,441	$	12,864	$	2,134	$	16,439


	Fiscal year ended March 31, 2022
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	2,005	$	2,348	$	75	$	4,428
Exit charges	708		14,711		(1,091)		14,328
Restructuring and other exit charges	$	2,713	$	17,059	$	(1,016)	$	18,756

A roll-forward of the restructuring reserve is as follows:



Balance at March 31, 2021	$	2,595
Accrued	4,428
Costs incurred	(6,013)
Foreign currency impact and other	20
Balance at March 31, 2022	$	1,030
Accrued	1,687
Costs incurred	(2,224)
Foreign currency impact and other	(48)
Balance at March 31, 2023	$	445
Accrued	8,006
Costs incurred	(6,064)
Foreign currency impact and other	21
Balance at March 31, 2024	$	2,408

Exit Charges

Fiscal 2024 Programs

Renewables

On November 8, 2023, the Company's Board of Directors approved a plan to stop production and operations of residential renewable energy products, which include our OutBack and Mojave brands. Management determined that residential renewable energy products no longer fit with the Company’s core strategy and resources will be better allocated toward commercial energy solutions for enterprise customers. The Company estimates that the total charges for these actions will amount to approximately $24,500. Non-cash charges for inventory and fixed assets write offs, and impairment of an indefinite-lived intangible asset are estimated to be $23,600, and cash charges for employee severance and retention payments are estimated to be $900. The plan is substantially complete as the end of fiscal 2024.

During fiscal 2024, the Company recorded non-cash charges totaling $551 primarily related to fixed assets and cash charges of $689 related to severance costs. The Company also recorded a non-cash write offs relating to inventories of $17,075, which was reported in cost of goods sold, and impairment of indefinite-lived intangible asset of $6,020.

Spokane

On November 8, 2023, the Company committed to a plan to close its facility in Spokane, Washington, which primarily manufactures enclosure systems for telecommunications and related end markets. Management determined that existing manufacturing locations have the capacity to satisfy demand for these products and will execute more efficient distribution to customers. The Company currently estimates that the total charges for these actions will amount to approximately $3,600 relating to $1,400 in cash charges for employee severance, and non-cash charges of $2,200 relating to fixed assets, facility lease, and inventory. The plan is substantially complete as the end of fiscal 2024.

During fiscal 2024, the Company recorded cash charges of $1,343 primarily related to severance costs and non-cash charges totaling $2,066 related to lease right of use asset and fixed asset write offs.

Fiscal 2023 Programs

Sylmar

In November 2022, the Company committed to a plan to close its facility in Sylmar, California, which manufactures specialty lithium batteries for aerospace and medical applications. Management determined to close the site upon the expiration of its lease on the property and to redirect production through consolidation into existing locations. The Company currently estimates total charges in the exit to amount to $12,730. Cash charges are estimated to total $8,837 primarily relating to severance and other costs to leave the site. Non-cash charges are estimated to be $3,892 relating to fixed assets, inventory, and contract assets. The plan is substantially complete as the end of fiscal 2024.

During fiscal 2023, the Company recorded cash charges of $1,682 related primarily related to severance costs and non-cash charges totaling $417 primarily relating to contract assets.

During fiscal 2024, the Company recorded cash charges of $7,155 primarily related to severance costs, relocation expenses, and manufacturing variances and non-cash charges totaling $377. The Company also recorded a non-cash write off relating to inventories of $3,098, which was reported in cost of goods sold.

Ooltewah

On June 29, 2022, the Company committed to a plan to close its facility in Ooltewah, Tennessee, which produced flooded motive power batteries for electric forklifts. Management determined that future demand for traditional motive power flooded cells will decrease as customers transition to maintenance free product solutions in lithium and TPPL. The Company currently estimates that the total charges for these actions will amount to approximately $18,500. Cash charges for employee severance related payments, cleanup related to the facility, contractual releases and legal expenses are estimated to be $9,200 and non-cash charges from inventory and fixed asset write-offs are estimated to be $9,300. These actions will result in the reduction of approximately 165 employees. The plan is substantially complete as the end of fiscal 2024.

During fiscal 2023, the Company recorded cash charges relating to severance and manufacturing variances of $2,735 and non-cash charges of $7,261 relating to fixed asset write-offs. The Company also recorded a non-cash write off relating to inventories of $1,613, which was reported in cost of goods sold.

During fiscal 2024, the Company recorded cash charges relating to site cleanup and decommissioning equipment of $4,399.

Fiscal 2022 Programs

Russia

In February 2022, as a result of the Russia-Ukraine conflict, economic sanctions were imposed on Russian individuals and entities, including financial institutions, by countries around the world, including the U.S. and the European Union. On March 3, 2022, the Company announced that it was indefinitely suspending its operations in Russia in order to comply with the sanctions. As a result of this decision, the Company wrote off net assets of $3,999 relating to its Russian subsidiary. The Company also incurred cash charges of $1,284 relating to severance and exiting lease obligations. During fiscal 2023, the Company sold inventory previously written off resulting in the reversal of $932 in cost of goods sold and reversal of $739 of cash charges primarily relating to lease obligations.

Zamudio, Spain

During fiscal 2022, the Company closed a minor assembling plant in Zamudio, Spain and sold the same for $1,779. A net gain of $740 was recorded as a credit to exit charges in the Consolidated Statements of Income.

Fiscal 2021 Programs

Hagen, Germany

In fiscal 2021, the Company's Board of Directors approved a plan to substantially close all of its facility in Hagen, Germany, which produces flooded motive power batteries for forklifts. Management determined that future demand for the motive power batteries produced at this facility was not sufficient, given the conversion from flooded to maintenance free batteries by customers, the existing number of competitors in the market, as well as the near term decline in demand and increased

uncertainty from the pandemic. The Company plans to retain the facility with limited sales, service and administrative functions along with related personnel for the foreseeable future.

The Company currently estimates that the total charges for these actions will amount to approximately $60,000, the majority of which has been recorded as of March 31, 2022. Cash charges for employee severance related payments, cleanup related to the facility, contractual releases and legal expenses are estimated to be $40,000 and non-cash charges from inventory and equipment write-offs are estimated to be $20,000. These actions resulted in the reduction of approximately 200 employees.

During fiscal 2021, the Company recorded cash charges relating to severance of $23,331 and non-cash charges of $7,946 primarily relating to fixed asset write-offs.

During fiscal 2022, the Company recorded cash charges primarily relating to severance of $8,069 and non-cash charges of $3,522 primarily relating to fixed asset write-offs. The Company also recorded a non-cash write off relating to inventories of $960, which was reported in cost of goods sold.

During fiscal 2023, the Company recorded cash charges of $2,207 relating to primarily to site cleanup and $562 of non-cash charges relating to accelerated depreciation of fixed assets.

During fiscal 2024, the Company recorded cash charges of $2,118 relating primarily to site cleanup and $526 of non-cash charges relating to accelerated depreciation of fixed assets.

Vijayawada, India

During fiscal 2021, the Company committed to a plan to close its facility in Vijayawada, India to align with its strategic vision for the new line of business structure and footprint and recorded exit charges of $1,509, primarily relating to asset write-offs. In fiscal 2022, the Company reclassified property, plant and equipment with a carrying value of $4,573 to assets held for sale on the Consolidated Balance Sheet and recognized an impairment loss of $2,973 under the caption Loss on assets held for sale on its consolidated statement of income, by writing down the carrying value of these assets to their estimated fair value of $1,600, based on their expected proceeds, less costs to sell. The Company also recorded a non-cash write off relating to inventories of $820, which was reported in cost of goods sold.

Targovishte, Bulgaria

During fiscal 2019, the Company committed to a plan to close its facility in Targovishte, Bulgaria, which produced diesel-electric submarine batteries. Management determined that the future demand for batteries of diesel-electric submarines was not sufficient given the number of competitors in the market. Of the estimated total charges of $26,000 for this plan, the Company had recorded charges amounting to $20,242 in fiscal 2019, relating to severance and inventory and fixed asset write-offs and an additional $5,123 relating to cash and non-cash charges during fiscal 2020. During fiscal 2021, in keeping with its strategy of exiting the manufacture of batteries for diesel-electric submarines, the Company completed further actions which resulted in $220 relating to cash and non-cash charges. During fiscal 2022, the Company sold this facility for $1,489. A net gain of $1,208 was recorded as a credit to exit charges in the Consolidated Statements of Income.

Income Taxes - Schedule of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Deferred Tax Asset, Valuation Allowance [Roll Forward]
Balance at Beginning of Period	$ 31,172	$ 31,017	$ 31,928
Additions Charged to Expense	9,463	2,654	4,486
Valuation Allowance Reversal	(2,614)	(586)	(1,535)
Other	(2,267)	(1,913)	(3,862)
Balance at End of Period	$ 35,754	$ 31,172	$ 31,017

Consolidated Statements of Changes in Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Dividends per common share	$ 0.85	$ 0.70	$ 0.70
Pension funded status adjustment (net of tax (expense) benefit)	$ 1,787	$ 2,947	$ 1,910
Tax expense related to unrealized gain (loss) on derivative instruments	(197)	(469)	(789)
Stock-based compensation	30,607	26,371	24,289
Exercise of stock options	10,786	4,393	1,336
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(9,166)	(6,453)	(9,150)
Treasury Stock, Value, Acquired, Cost Method	(95,690)	(22,907)	(156,366)
Contra equity - indemnification receivable for acquisition related tax liability	2,463	1,157	1,735
Other	1,128	1,051	828
Net earnings	269,096	175,810	143,911
Dividends	(34,481)	(28,537)	(29,353)
Dissolution of joint venture			(47)
Pension funded status adjustment, (net of tax (expense) benefit)	(5,375)	8,214	8,310
Net unrealized gain (loss) on derivative instruments (net of tax benefit (expense))	(656)	(1,552)	2,603
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(15,521)	(46,941)	(38,397)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,757,072	$ 1,603,881	$ 1,493,275

Stock-Based Compensation - Summary of Changes in Restricted Stock Units and Market Share Units (Detail) - $ / shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Weighted average grant date fair value
Weighted Average Grant Date Fair Value, Granted (usd per share)	$ 94.34	$ 66.90	$ 88.27
Restricted Stock Units (RSU)
Number of RSU and MSU
Number of Non-vested awards, Beginning Balance (in shares)	1,009,783
Number of units, Granted (in shares)	299,284
Number of units, Stock dividend (in shares)	8,987
Number of units, Vested (in shares)	(262,315)
Number of units, Forfeitures (in shares)	(32,903)
Number of Non-vested awards, Ending Balance (in shares)	1,022,836	1,009,783
Weighted average grant date fair value
Weighted Average Grant Date Fair Value, Non-vested awards, Beginning Balance (usd per share)	$ 65.48
Weighted Average Grant Date Fair Value, Granted (usd per share)	92.44
Weighted Average Grant Date Fair Value, Stock dividend (usd per share)	68.55
Weighted Average Grant Date Fair Value, Vested (usd per share)	72.63
Weighted Average Grant Date Fair Value, Forfeitures (usd per share)	79.36
Weighted Average Grant Date Fair Value, Non-vested awards, Ending Balance (usd per share)	$ 69.24	$ 65.48
Market condition-based Share Units (TSR)
Number of RSU and MSU
Number of Non-vested awards, Beginning Balance (in shares)	31,653
Number of units, Granted (in shares)	0
Number of units, Stock dividend (in shares)	61
Number of units, Vested (in shares)	(30,582)
Number of units, Forfeitures (in shares)	0
Number of Non-vested awards, Ending Balance (in shares)	1,132	31,653
Weighted average grant date fair value
Weighted Average Grant Date Fair Value, Non-vested awards, Beginning Balance (usd per share)	$ 62.19
Weighted Average Grant Date Fair Value, Granted (usd per share)	0
Weighted Average Grant Date Fair Value, Stock dividend (usd per share)	62.80
Weighted Average Grant Date Fair Value, Vested (usd per share)	62.02
Weighted Average Grant Date Fair Value, Forfeitures (usd per share)	0
Weighted Average Grant Date Fair Value, Non-vested awards, Ending Balance (usd per share)	$ 66.89	$ 62.19

Inventories (Tables)

12 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Summary Of Net Inventories


	March 31,
	2024		2023
Raw materials	$	284,773	$	323,418
Work-in-process	115,191		123,401
Finished goods	297,734		350,979
Total	$	697,698	$	797,798

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net earnings	$ 269,096	$ 175,810	$ 143,911
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	92,021	91,153	95,878
Write-off of assets relating to restructuring and other exit charges	24,229	8,920	6,503
Loss on assets held for sale	0	0	2,973
Impairment of indefinite-lived intangibles	13,619	480	1,178
Derivatives not designated in hedging relationships:
Net losses (gains)	846	(1,182)	157
Cash proceeds (settlements)	(255)	470	255
Provision for doubtful accounts	1,873	(431)	2,621
Deferred income taxes	(29,344)	(15,236)	1,115
Non-cash interest expense	2,450	1,964	2,107
Stock-based compensation	30,607	26,371	24,289
Gain on disposal of property, plant, and equipment	908	(113)	(490)
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	108,631	67,553	(128,956)
Inventories	75,633	(96,413)	(212,839)
Prepaid and other current assets	(112,701)	23,689	(32,044)
Other assets	6,027	(6,298)	270
Accounts payable	(15,131)	(4,236)	65,316
Accrued expenses	(8,254)	5,747	(38,578)
Other liabilities	(3,226)	1,690	749
Net cash provided by (used in) operating activities	457,029	279,938	(65,585)
Cash flows from investing activities
Capital expenditures	(86,437)	(88,772)	(74,041)
Purchase of businesses	(8,270)	0	0
Proceeds from disposal of facility	0	0	3,268
Proceeds from disposal of property, plant, and equipment	2,228	586	1,540
Proceeds from termination of net investment hedges	0	43,384	0
Net cash used in investing activities	(92,479)	(44,802)	(69,233)
Cash flows from financing activities
Net borrowings (repayments) on short-term debt	(231)	(21,719)	20,556
Proceeds from Second Amended Revolver borrowings	182,500	310,500	523,400
Repayments of Second Amended Revolver borrowings	(427,500)	(500,500)	(88,400)
Proceeds from Amended 2017 Term Loan	0	300,000	0
Proceeds from 2032 Bonds	300,000	0	0
Repayments of 2023 Senior Notes	0	(300,000)	0
Repayments of Second and Third Amended Term Loan	293,889	5,215	161,447
Debt issuance costs	(4,061)	(1,121)	(2,952)
Finance lease obligations and other	1,169	1,110	810
Option proceeds, net	10,786	4,392	1,336
Payment of taxes related to net share settlement of equity awards	(9,166)	(6,453)	(9,150)
Purchase of treasury stock	(95,688)	(22,907)	(156,366)
Dividends paid to stockholders	(34,480)	(28,537)	(29,353)
Net cash (used in) provided by financing activities	(370,560)	(270,450)	98,434
Effect of exchange rate changes on cash and cash equivalents	(7,331)	(20,509)	(12,936)
Net (decrease) increase in cash and cash equivalents	(13,341)	(55,823)	(49,320)
Cash and cash equivalents at beginning of year	346,665	402,488	451,808
Cash and cash equivalents at end of year	$ 333,324	$ 346,665	$ 402,488

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Number of Options
Number of Options outstanding, Beginning Balance (in shares)	1,196,311	975,605	799,501
Number of Options, Granted (in shares)	200,314	310,140	246,222
Number of Options, Exercised (in shares)	(197,350)	(75,180)	(42,640)
Number of Options, Forfeited (in shares)	(9,166)	(9,575)	(27,478)
Number of Options, Expired (in shares)	0	(4,679)	0
Number of Options outstanding, Ending Balance (in shares)	1,190,109	1,196,311	975,605	799,501
Number of Options, Exercisable (in shares)	713,932
Number of Options, Vested and Expected to Vest (in shares)	1,176,995
Weighted- Average Remaining Contract Term (Years)
Options outstanding, Weighted Average Remaining Contract Term (Years)	7 years	7 years 3 months 18 days	7 years 6 months	7 years 9 months 18 days
Options exercisable, Weighted Average Remaining Contract Term (Years)	5 years 10 months 24 days
Options vested and expected to vest, Weighted Average Remaining Contract Term (Years)	7 years
Weighted- Average Exercise Price
Options outstanding, Weighted Average Exercise Price, Beginning Balance (usd per share)	$ 78.83	$ 78.94	$ 72.31
Weighted Average Exercise Price, Granted (usd per share)	101.04	75.33	97.32
Weighted Average Exercise Price, Exercised (usd per share)	71.81	65.22	65.71
Weighted Average Exercise Price, Expired (usd per share)	78.68	80.05	71.26
Weighted Average Exercise Price, Forfeited (usd per share)	0	85.12	0
Options outstanding, Weighted Average Exercise Price, Ending Balance (usd per share)	83.74	$ 78.83	$ 78.94	$ 72.31
Options exercisable, Weighted Average Exercise Price (usd per share)	79.70
Weighted Average Exercise Price, Vested and Expected to Vest (usd per share)	$ 83.66
Aggregate Intrinsic Value
Options outstanding, Aggregate Intrinsic Value, Beginning Balance	$ 12,150	$ 3,605	$ 14,781
Options exercised, aggregate intrinsic value	6,110	1,561	1,079
Options forfeited, aggregate intrinsic value	158	39	520
Options expired, aggregate intrinsic value	0	0	0
Options outstanding, Aggregate Intrinsic Value, Ending Balance	15,043	$ 12,150	$ 3,605	$ 14,781
Options exercisable, Aggregate Intrinsic Value	11,178
Options vested and expected to vest, aggregate intrinsic value	$ 14,944

Goodwill and Other Intangible Assets - Schedule of Company's Other Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Intangible Assets [Line Items]
Gross Amount, Total	$ 536,665	$ 549,675
Accumulated Amortization ,Total	(217,258)	(189,263)
Net Amount ,Total	319,407	360,412
Trademarks
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Amount	131,167	144,702
Finite-lived intangible assets, Gross Amount	9,554	8,946
Indefinite-lived intangible assets, Accumulated Amortization	(953)	(953)
Finite-lived intangible assets, Accumulated Amortization	(8,482)	(6,442)
Indefinite-lived intangible assets, Net Amount	130,214	143,749
Finite-lived intangible assets, Net Amount	1,072	2,504
Customer relationships
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	295,215	295,293
Finite-lived intangible assets, Accumulated Amortization	(147,833)	(130,262)
Finite-lived intangible assets, Net Amount	147,382	165,031
Non-compete
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	2,825	2,825
Finite-lived intangible assets, Accumulated Amortization	(2,825)	(2,825)
Finite-lived intangible assets, Net Amount	0	0
Technology
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	96,708	96,713
Finite-lived intangible assets, Accumulated Amortization	(55,969)	(47,585)
Finite-lived intangible assets, Net Amount	40,739	49,128
Licenses
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	1,196	1,196
Finite-lived intangible assets, Accumulated Amortization	(1,196)	(1,196)
Finite-lived intangible assets, Net Amount	$ 0	$ 0

Retirement Plans - Summary Changes in Plan Assets and Benefit Obligations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Changes in plan assets and benefit obligations:
New prior service cost	$ 0	$ 0	$ 0
Net loss (gain) arising during the year	7,439	(10,352)	(9,362)
Effect of exchange rates on amounts included in AOCI	127	(957)	(883)
Amounts recognized as a component of net periodic benefit costs:
Amortization of prior service cost	42	41	$ 45
Defined Benefit Plan Net Periodic Benefit Cost Credit Curtailment Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag			Amortization of prior service cost
Amortization or settlement recognition of net loss	(284)	(438)	$ (1,167)
Defined Benefit Plan Net Periodic Benefit Cost Credit Settlement Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag			Amortization or settlement recognition of net loss
Total recognized in other comprehensive (income) loss	$ 7,240	$ (11,788)	$ (11,457)

Stockholders' Equity and Noncontrolling Interests - (Reclassifications from AOCI) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net unrealized gain on derivative instruments, Interest expense		$ (49,954)	$ (59,529)	$ (37,777)
Derivatives in cash flow hedging relationships
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax expense (benefit)	$ 2,118		(275)	2,282
Net of tax			901	(7,460)
Derivatives in cash flow hedging relationships \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net unrealized gain (loss) on derivative instruments, Cost of goods sold	(9,057)		1,176	(9,742)
Derivatives in net investment hedging relationships
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax expense (benefit)	167		839	276
Net of tax	(546)		(2,748)	(905)
Derivatives in net investment hedging relationships \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net unrealized gain on derivative instruments, Interest expense	(713)		(3,587)	(1,181)
Defined benefit pension costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service costs and deferrals	326		478	1,212
Tax expense (benefit)	$ (29)		(136)	(276)
Net of tax			$ 342	$ 936

Retirement Plans - Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan amounts recognized in balance sheet	$ (21,403)	$ (11,695)
Non-current assets
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan amounts recognized in balance sheet	5,606	14,147
Accrued expenses
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan amounts recognized in balance sheet	(1,497)	(1,314)
Other liabilities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan amounts recognized in balance sheet	$ (25,512)	$ (24,528)

Commitments, Contingencies and Litigation - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2024 Employee
Commitments and Contingencies Disclosure [Abstract]
Company number of employees	10,797
Percentage of employees covered by collective bargaining agreements	28.00%
Percentage of collective bargaining agreements that expire in next twelve months	7.00%
Average term of collective bargaining agreements	2 years
Longest term of collective bargaining agreements	4 years

Revenue Recognition - Remaining Performance Obligation (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 147,016
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 111,041
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 27,644
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, timing of satisfaction	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, timing of satisfaction	3 years

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	May 22, 2024	May 02, 2024
Forecast
Subsequent Event [Line Items]
Business acquisition, consideration transferred		$ 208.0
Subsequent Event \| Dividend Declared
Subsequent Event [Line Items]
Common Stock cash dividends, per share (usd per share)	$ 0.225

Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Designated as Hedging Instrument \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	$ 3,092	$ 723
Derivatives liabilities, Fair Value	835	1,251
Designated as Hedging Instrument \| Net investment hedges
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	0
Derivatives liabilities, Fair Value	19,167	15,760
Designated as Hedging Instrument \| Prepaid and other current assets \| Lead forward contracts \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	0
Designated as Hedging Instrument \| Prepaid and other current assets \| Foreign currency forward contracts \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	396	723
Designated as Hedging Instrument \| Prepaid and other current assets \| Interest rate swaps \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	2,696	0
Designated as Hedging Instrument \| Accrued expenses \| Lead forward contracts \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	835	89
Designated as Hedging Instrument \| Other liabilities \| Cash Flow Hedging \| Cross currency fixed interest rate swaps
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	0	1,162
Designated as Hedging Instrument \| Other liabilities \| Net investment hedges \| Cross currency fixed interest rate swaps
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	19,167	15,760
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	200
Derivatives liabilities, Fair Value	391	0
Derivatives Not Designated as Hedging Instruments \| Prepaid and other current assets \| Lead forward contracts
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	0
Derivatives Not Designated as Hedging Instruments \| Prepaid and other current assets \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	200
Derivatives Not Designated as Hedging Instruments \| Prepaid and other current assets \| Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	0	0
Derivatives Not Designated as Hedging Instruments \| Accrued expenses \| Lead forward contracts
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	0	0
Derivatives Not Designated as Hedging Instruments \| Accrued expenses \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	$ 391	$ 0

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants (in shares)	5,449,381
Stock options granted (in shares)	200,314	310,140	246,222
Stock-based compensation expense	$ 7,022	$ 6,232	$ 6,235
Stock-based compensation expense, net of tax	$ 730	$ 848	$ 738
Market price per unit of stock award (usd per share)	$ 94.34	$ 66.90	$ 88.27
Unrecognized compensation expense associated with non-vested incentive awards outstanding	$ 54,014
Nonvested stock, weighted average remaining contractual term	22 months
Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market price per unit of stock award (usd per share)	$ 92.44
Stock unit grant during period (in shares)	299,284
Restricted Shares Restricted Stock Units and Market Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 23,585	$ 20,139	$ 18,054
Stock unit grant during period (in shares)	8,386	1,635	781
Equity-based compensation expense, tax benefit	$ 4,557	$ 3,746	$ 3,072
Management \| Nonqualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	200,314
Vesting period, in years	3 years
Management \| Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market price per unit of stock award (usd per share)	$ 94.31	$ 70.88	$ 91.81
Stock unit grant during period (in shares)	269,751	345,449	229,600
Non Employee Directors \| Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)	21,147	39,792	24,055
Market price per unit of stock award (usd per share)	$ 76.83	$ 42.95	$ 60.29
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants (in shares)	3,614,500
Stock Options Issued In Fiscal 2010 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration period (in years)	10 years

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Indefinite-lived Intangible Assets [Line Items]
Amortization expense, related to finite-lived intangible assets			$ 27,993	$ 30,748	$ 33,294
Expected amortization expense, 2024	$ 26,574		26,574
Expected amortization expense, 2025	25,646		25,646
Expected amortization expense, 2026	24,844		24,844
Expected amortization expense, 2027	24,280		24,280
Expected amortization expense, 2028	22,451		22,451
Impairment of indefinite-lived intangible assets			13,619	480	$ 1,178
Estimated tax-deductible goodwill	78,147	$ 86,709	$ 78,147	$ 86,709
Trademarks \| EMEA
Indefinite-lived Intangible Assets [Line Items]
Impairment of indefinite-lived intangible assets	$ 13,619	$ 480

Stock-Based Compensation

12 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

As of March 31, 2024, the Company maintains the 2023 Equity Incentive Plan (“2023 EIP”). The 2023 EIP reserved 3,614,500 shares of common stock for the grant of various classes of nonqualified stock options, restricted stock units, market condition-based on total shareholder return (“TSR”) and performance condition-based share units (“PSU”) and other forms of equity-based compensation. Shares subject to any awards that expire without being exercised or that are forfeited or settled in cash shall again be available for future grants of awards under the 2023 EIP. Shares subject to stock option or stock appreciation right awards, that have been retained by the Company in payment or satisfaction of the exercise price and any applicable tax withholding obligation of such awards, shall not be available for future grant under the 2023 EIP.

As of March 31, 2024, 5,449,381 shares are available for future grants. The Company’s equity incentive plans are intended to provide an incentive to employees and non-employee directors of the Company to remain in the service of the Company and to increase their interest in the success of the Company in order to promote the long-term interests of the Company. The plans seek to promote the highest level of performance by providing an economic interest in the long-term performance of the Company. The Company settles employee share-based compensation awards with newly issued shares.

Stock Options

During fiscal 2024, the Company granted to management and other key employees 200,314 non-qualified options that vest ratably over 3 years from the date of grant. Options expire 10 years from the date of grant.

The Company recognized stock-based compensation expense relating to stock options of $7,022, with a related tax benefit of $730 for fiscal 2024, $6,232 with a related tax benefit of $848 for fiscal 2023 and $6,235 with a related tax benefit of $738 for fiscal 2022.

For purposes of determining the fair value of stock options granted, the Company used a Black-Scholes Model with the following assumptions:


	2024		2023		2022
Risk-free interest rate	4.24	%	2.92	%	0.89	%
Dividend yield	0.95	%	0.99	%	0.76	%
Expected life (years)	6		6		6
Volatility	38.3	%	37.4	%	37.3	%

The following table summarizes the Company’s stock option activity in the years indicated:


	Number of Options	Weighted- Average Remaining Contract Term (Years)	Weighted- Average Exercise Price		Aggregate Intrinsic Value
Options outstanding as of March 31, 2021	799,501	7.8	$	72.31	$	14,781
Granted	246,222		97.32		—
Exercised	(42,640)		65.71		1,079
Forfeited	(27,478)		71.26		520
Expired	—		—		—
Options outstanding as of March 31, 2022	975,605	7.5	$	78.94	$	3,605
Granted	310,140		75.33		—
Exercised	(75,180)		65.22		1,561
Forfeited	(9,575)		80.05		39
Expired	(4,679)		85.12		—
Options outstanding as of March 31, 2023	1,196,311	7.3	$	78.83	$	12,150
Granted	200,314		101.04		—
Exercised	(197,350)		71.81		6,110
Forfeited	(9,166)		78.68		158
Expired	—		—		—
Options outstanding as of March 31, 2024	1,190,109	7.0	$	83.74	$	15,043
Options exercisable as of March 31, 2024	713,932	5.9	$	79.70	$	11,178
Options vested and expected to vest, as of March 31, 2024	1,176,995	7.0	$	83.66	$	14,944

The following table summarizes information regarding stock options outstanding as of March 31, 2024:


Range of Exercise Prices	Number of Options	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price
$57.60-$60.00	98,680	5.0	$	57.73
$60.01-$70.00	26,118	0.9	$	68.76
$70.01-$80.00	423,674	7.4	$	75.50
$80.01-$90.00	219,580	5.3	$	83.00
$90.01-$100.00	140,375	8.3	$	93.16
$100.01-$104.18	281,682	8.3	$	102.51
	1,190,109	7.0	$	83.74

Restricted Stock Units, Market and Performance-condition based Awards

Non-Employee Directors

In fiscal 2024, the Company granted to non-employee directors 21,147 deferred restricted stock units (“DSU”) at the fair value of $76.83 per unit at the date of grant. In fiscal 2023, such grants amounted to 39,792 DSU's at the fair value of $42.95 per unit at the date of grant and in fiscal 2022, such grants amounted to 24,055 DSU's units at the fair value of $60.29 unit at the date of grant. The awards vest immediately upon the date of grant and are settled in shares of common stock six months after termination of service as a director.

The Company also granted to non-employee directors, during fiscal 2024, fiscal 2023 and fiscal 2022, 8,386, 1,635, and 781 restricted stock units, respectively, at fair values of $94.34, $66.90 and $88.27, respectively, under the deferred compensation plan for non-employee directors.

Employees

In fiscal 2024, the Company granted to management and other key employees 269,751 restricted stock units that vest ratably over four years from the date of grant, at the fair value of $94.31 per restricted stock unit.

In fiscal 2023, the Company granted to management and other key employees 345,449 restricted stock units that vest ratably over four years from the date of grant at the fair value of $70.88 per restricted stock unit.

In fiscal 2022, the Company granted to management and other key employees 229,600 restricted stock units that vest ratably over four years from the date of grant at a fair value of $91.81 per restricted stock unit.


	Restricted Stock Units (RSU)			Market condition-based Share Units (TSR)
	Number of RSU	Weighted- Average Grant Date Fair Value		Number of TSR	Weighted- Average Grant Date Fair Value
Non-vested awards as of March 31, 2023	1,009,783	$	65.48	31,653	$	62.19
Granted	299,284	92.44		—	—
Stock dividend	8,987	68.55		61	62.80

Vested	(262,315)	72.63		(30,582)	62.02
Forfeitures	(32,903)	79.36		—	—
Non-vested awards as of March 31, 2024	1,022,836	$	69.24	1,132	$	66.89

The Company recognized stock-based compensation expense relating to restricted stock units, TSRs of $23,585, with a related tax benefit of $4,557 for fiscal 2024, $20,139, with a related tax benefit of $3,746 for fiscal 2023 and $18,054, with a related tax benefit of $3,072 for fiscal 2022.

All Award Plans

As of March 31, 2024, unrecognized compensation expense associated with the non-vested equity awards outstanding was $54,014 and is expected to be recognized over a weighted-average period of 22 months.

Income Taxes (Tables)

12 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Tax Expense


	Fiscal year ended March 31,
	2024		2023		2022
Current income tax expense
Current:
Federal	$	21,785	$	21,203	$	9,558
State	3,252		5,654		4,022
Foreign	27,396		23,208		15,333
Total current income tax expense	52,433		50,065		28,913
Deferred income tax (benefit) expense
Federal	(25,008)		(18,370)		1,183
State	(3,564)		(2,534)		(1,453)
Foreign	(772)		5,668		1,385
Total deferred income tax (benefit) expense	(29,344)		(15,236)		1,115
Total income tax expense	$	23,089	$	34,829	$	30,028

Earnings Before Income Taxes

Earnings before income taxes consists of the following:


	Fiscal year ended March 31,
	2024		2023		2022
United States	$	99,230	$	38,703	$	21,871
Foreign	192,955		171,936		152,068
Earnings before income taxes	$	292,185	$	210,639	$	173,939

Deferred Tax Assets And Liabilities

The following table sets forth the tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities:


	March 31,
	2024		2023
Deferred tax assets:
Accounts receivable	$	309	$	219
Inventories	13,472		6,387
Net operating loss carryforwards	51,005		48,801
Lease liabilities	20,081		20,888
Capitalized R&D Expenditures	32,740		16,378
Accrued expenses	35,132		31,949
Other assets	29,079		22,029
Gross deferred tax assets	181,818		146,651
Less valuation allowance	(35,754)		(31,172)
Total deferred tax assets	146,064		115,479
Deferred tax liabilities:
Property, plant and equipment	45,493		42,884
Lease Right-of-use assets	20,071		20,888
Intangible assets	56,726		59,152
Other liabilities	4,560		4,521
Total deferred tax liabilities	126,850		127,445
Net deferred tax assets (liabilities)	$	19,214	$	(11,966)

Schedule of Change in Valuation Allowance

The following table sets forth the changes in the Company's valuation allowance for fiscal 2024, 2023 and 2022:


	Balance at Beginning of Period		Additions Charged to Expense		Valuation Allowance Reversal		Other(1)		Balance at End of Period

Fiscal year ended March 31, 2022	$	31,928	$	4,486	$	(1,535)	$	(3,862)	$	31,017
Fiscal year ended March 31, 2023	31,017		2,654		(586)		(1,913)		31,172
Fiscal year ended March 31, 2024	31,172		9,463		(2,614)		(2,267)		35,754

(1)Includes the impact of currency changes and the expiration of net operating losses for which a full valuation allowance was recorded.

Reconciliation Of Income Taxes At The Statutory Rate

A reconciliation of income taxes at the statutory rate (21.0% for fiscal 2024, 2023 and 2022) to the income tax provision is as follows:


	Fiscal year ended March 31,
	2024		2023		2022
United States statutory income tax expense	$	61,358	$	44,233	$	36,527
Increase (decrease) resulting from:
State income taxes, net of federal effect	(995)		1,714		1,724
Nondeductible expenses and other	3,833		6,028		1,217
Net effect of GILTI, FDII, BEAT	3,313		2,457		5,405

Effect of foreign operations	(17,475)		(12,978)		(14,192)
Valuation allowance	6,849		2,068		2,951

Research and Development Credit	(5,158)		(5,063)		(3,604)
IRA Impact	(28,636)		(3,630)		—
Income tax expense	$	23,089	$	34,829	$	30,028

Reconciliation Of Unrecognized Tax Benefits

The following table summarizes activity of the total amounts of unrecognized tax benefits:


	Fiscal year ended March 31,
	2024		2023		2022
Balance at beginning of year	$	3,495	$	4,770	$	6,785
Increases related to current year tax positions	(2)		24		21

Increases related to prior year tax positions	—		(1)		598
Decreases related to prior tax positions	(129)		—		—
Decreases related to prior year tax positions settled	—		(77)		(784)
Lapse of statute of limitations	(519)		(1,221)		(1,850)
Balance at end of year	$	2,845	$	3,495	$	4,770

Warranty (Detail) - USD ($) $ in Thousands	12 Months Ended
Warranty (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Product Warranty Accrual [Roll Forward]
Balance at beginning of year	$ 56,630	$ 54,978	$ 58,962
Current year provisions	34,110	29,132	17,645
Costs incurred	(30,160)	(25,251)	(20,648)
Foreign currency translation adjustment	239	(2,229)	(981)
Balance at end of year	$ 60,819	$ 56,630	$ 54,978

Derivative Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value Of Derivative Instruments In The Consolidated Balance Sheets

Presented below in tabular form is information on the location and amounts of derivative fair values in the Consolidated Balance Sheets and derivative gains and losses in the Consolidated Statements of Income:

Fair Value of Derivative Instruments

March 31, 2024 and 2023


	Derivatives and Hedging Activities Designated as Cash Flow Hedges				Derivatives and Hedging Activities Designated as Net Investment Hedges				Derivatives and Hedging Activities Not Designated as Hedging Instruments
	March 31, 2024		March 31, 2023		March 31, 2024		March 31, 2023		March 31, 2024		March 31, 2023
Prepaid and other current assets:
Lead forward contracts	$	—	$	—	$	—	$	—	$	—	$	—
Foreign currency forward contracts	396		723		—		—		—		200


Other Assets:
Interest rate swaps	2,696		—		—		—		—		—
Total assets	$	3,092	$	723	$	—	$	—	$	—	$	200
Accrued expenses:
Lead forward contracts	$	835	$	89	$	—	$	—	$	—	$	—
Foreign currency forward contracts	—		—		—		—		391		—

Other liabilities:
Interest rate swaps	—		1,162		—		—		—		—
Net investment hedges	—		—		19,167		15,760		—		—
Total liabilities	$	835	$	1,251	$	19,167	$	15,760	$	391	$	—

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2024


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	(455)	Cost of goods sold	$	5,388
Foreign currency forward contracts	1,740		Cost of goods sold	612
Interest Rate Swaps	6,915		Interest expense	3,057
Total	$	8,200		$	9,057


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	(2,695)	Interest expense	$	713
Total	$	(2,695)		$	713

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2023


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	(3,883)	Cost of goods sold	$	(3,765)
Foreign currency forward contracts	1,849		Cost of goods sold	2,589
Interest rate swaps	(1,162)		Interest Expense	—
Total	$	(3,196)		$	(1,176)


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	29,021	Interest expense	$	3,587
Total	$	29,021		$	3,587

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2022


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	12,193	Cost of goods sold	$	8,974
Foreign currency forward contracts	941		Cost of goods sold	768
Total	$	13,134		$	9,742


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	1,479	Interest expense	$	1,181
Total	$	1,479		$	1,181

Effect Of Derivative Instruments


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	(846)
Total		$	(846)


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	1,182
Total		$	1,182


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	(157)
Total		$	(157)

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References + Details

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Contingency [Line Items]
Income taxes paid	$ 28,810,000	$ 46,309,000	$ 50,484,000
Net operating loss carryforwards carried forward indefinitely	111,526,000
Net operating loss carryforwards subject to expiration	99,963,000
Valuation allowance	35,754,000	31,172,000	31,017,000	$ 31,928,000
Increase (decrease) in deferred tax asset	(2,267,000)	(1,913,000)	(3,862,000)
Income tax expense (benefit)	$ 23,089,000	$ 34,829,000	$ 30,028,000
Effective income tax rates	7.90%	16.50%	17.30%
Foreign pre-tax income	$ 192,955,000	$ 171,936,000	$ 152,068,000
Foreign pre-tax income, percent	13.80%	16.80%	11.00%
Tax rate of Swiss subsidiary	9.00%	7.00%	4.00%
Blended rate	21.00%	21.00%	21.00%
Undistributed earnings of foreign subsidiaries	$ 1,352,000,000	$ 1,340,000,000
Unrecognized tax benefits	2,845,000	3,495,000	$ 4,770,000	$ 6,785,000
Estimated change in unrecognized tax benefit in fiscal 2015	533,000
Tax related interest and penalties	455,000	435,000
Federal
Income Tax Contingency [Line Items]
United States federal net operating loss carryforwards	539,000
Valuation allowance	0	0
Foreign
Income Tax Contingency [Line Items]
United States federal net operating loss carryforwards	211,489,000
Valuation allowance	35,219,000	30,829,000
Increase (decrease) in deferred tax asset	4,389,000
Foreign \| Increase to Income Tax Expense (Benefit)
Income Tax Contingency [Line Items]
Increase (decrease) in deferred tax asset	6,656,000
Foreign \| Purchase Accounting Adjustment
Income Tax Contingency [Line Items]
Increase (decrease) in deferred tax asset	(2,267,000)
State
Income Tax Contingency [Line Items]
United States federal net operating loss carryforwards	25,646,000
Valuation allowance	$ 535,000	$ 343,000

Leases - Balance Sheet Classification (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 76,413	$ 85,237
Operating lease current liabilities	19,280	21,230
Operating lease non-current liabilities	61,687	66,555
Finance lease right-of-use assets	878	342
Finance lease current liabilities	237	90
Finance lease non-current liabilities	$ 647	$ 254
Operating lease, right-of-use asset, statement of financial position	Other assets	Other assets
Operating lease, liability, current, statement of financial position	Accrued expenses	Accrued expenses
Operating lease, liability, noncurrent, statement of financial position	Other liabilities	Other liabilities
Finance lease, right-of-use asset, statement of financial position	Property, plant, and equipment, net	Property, plant, and equipment, net

Restructuring, Exit and Other Charges - Acquisition and Non-Acquisition Related Restructuring Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges	$ 28,103	$ 16,439	$ 18,756
Restructuring Reserve [Roll Forward]
Beginning balance	445	1,030	2,595
Accrued	8,006	1,687	4,428
Costs incurred	(6,064)	(2,224)	(6,013)
Foreign currency impact and other	21	(48)	20
Ending balance	$ 2,408	$ 445	1,030
Accrued Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag	Accrued	Accrued
Energy Systems
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges	$ 8,840	$ 1,441	2,713
Motive Power
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges	11,697	12,864	17,059
Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges	7,566	2,134	(1,016)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8,006	1,687	4,428
Exit charges	20,097	14,752	14,328
Restructuring and other exit charges	28,103	16,439	18,756
Employee Severance \| Energy Systems
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,526	1,318	2,005
Exit charges	4,312	123	708
Restructuring and other exit charges	8,838	1,441	2,713
Employee Severance \| Motive Power
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,445	327	2,348
Exit charges	8,253	12,537	14,711
Restructuring and other exit charges	11,698	12,864	17,059
Employee Severance \| Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring charges	35	42	75
Exit charges	7,532	2,092	(1,091)
Restructuring and other exit charges	$ 7,567	$ 2,134	$ (1,016)

Leases - Finance and Operating Lease Maturity Schedules (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
Finance Leases
2025	$ 290
2026	256
2027	232
2028	194
2029	39
Thereafter	0
Total undiscounted lease payments	1,012
Present value discount	128
Finance lease liability	884
Operating Leases
2025	22,890
2026	20,048
2027	16,819
2028	13,200
2029	7,846
Thereafter	13,224
Total undiscounted lease payments	94,026
Present value discount	13,059
Operating lease liabilities	$ 80,967

Accounts Receivable

12 Months Ended

Mar. 31, 2024

Receivables [Abstract]

Accounts Receivable


	March 31,
	2024		2023
Accounts receivable	$	532,832	$	646,592
Allowance for doubtful accounts	8,107		8,775
Accounts receivable, net	$	524,725	$	637,817

During fiscal 2023, the Company entered into a Receivables Purchase Agreement (RPA), under which the Company continuously sells its interest in designated pools of trade accounts receivables, at a discount, to a special purpose entity, which in turn sells certain of the receivables to an unaffiliated financial institution ("unaffiliated financial institution") on a monthly basis. The Company may sell certain US-originated accounts receivable balances up to a maximum amount of $150,000. In return for these sales, the Company receives a cash payment equal to the face value of the receivables and is charged a fee of Secured Overnight Financing Rate (“SOFR”) plus 85 basis points against the sold receivable balance. The program is conducted through EnerSys Finance LLC ("EnerSys Finance"), an entity structured to be bankruptcy remote, and matures in December 2025. The Company is deemed the primary beneficiary of EnerSys Finance as the Company has both the power to direct the activities that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive the benefits that could potentially be significant to the entity from the transfer of the trade accounts receivables into the special purpose entity. Accordingly, EnerSys Finance is included in the Company’s Consolidated Financial Statements.

Receivables sold to unaffiliated financial institutions under the program are excluded from “Accounts receivable, net” on the Company’s Consolidated Balance Sheets, and cash receipts are reflected as cash provided by operating activities on the Consolidated Statements of Cash Flows. The purchase price is received in cash when the receivables are sold, and fees charged relating to this balance are recorded to other (income) expense. Certain unsold receivables held by EnerSys Finance serve as collateral to unaffiliated financial institutions. These unsold receivables are included in “Accounts receivable, net” in the

Company’s Consolidated Balance Sheets. The Company continues servicing the receivables which were sold and in exchange receives a servicing fee from EnerSys Finance under the program.

During fiscal 2024, the Company sold $710,746 of accounts receivables for approximately $710,746 in net proceeds to an unaffiliated financial institution, of which $710,746 were collected as of March 31, 2024. Total collateralized accounts receivables of approximately $341,223, were held by EnerSys Finance at March 31, 2024.

During fiscal 2023, the Company sold $343,013 of accounts receivables for approximately $192,713 in net proceeds to an unaffiliated financial institution, of which $193,013 were collected as of March 31, 2023. Total collateralized accounts receivables of approximately $274,121, were held by EnerSys Finance at March 31, 2023.

Any accounts receivables held by EnerSys Finance would likely not be available to other creditors of the Company in the event of bankruptcy or insolvency proceedings relating to the Company until the outstanding balances under the RPA are satisfied. Additionally, the financial obligations of EnerSys Finance to the unaffiliated financial institutions under the program are limited to the assets it owns and there is no recourse to the Company for receivables that are uncollectible as a result of the insolvency of EnerSys Finance or its inability to pay the account debtors.

Debt - Additional Information (Detail)			3 Months Ended			12 Months Ended
Debt - Additional Information (Detail)	Jan. 11, 2024 USD ($)	Dec. 11, 2019 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Oct. 02, 2022 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2019 USD ($)	Oct. 02, 2022 CAD ($)	Mar. 31, 2019 CAD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Repayments of senior debt						$ 0	$ 300,000,000	$ 0
Loss on extinguishment of debt			$ 753,000
Weighted-average interest rate			5.20%	4.60%		5.20%	4.60%
Short term borrowing outstanding amount			$ 30,444,000	$ 30,642,000		$ 30,444,000	$ 30,642,000
Short-term debt, weighted-average interest rates			6.70%	7.00%		6.70%	7.00%
Amortization expense included in interest expense						$ 1,697,000	$ 1,964,000	2,107,000
Deferred financing fees, net of accumulated amortization			$ 8,035,000	$ 6,424,000		8,035,000	6,424,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt			600,000,000	300,000,000		600,000,000	300,000,000
Line of Credit
Debt Instrument [Line Items]
Available lines of credit			938,334,000	693,444,000		938,334,000	693,444,000
Outstanding amount			90,866,000	90,839,000		90,866,000	90,839,000
Convertible Notes Payable
Debt Instrument [Line Items]
Stand by letters of credit			3,919,000	3,565,000		3,919,000	3,565,000
2027 Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 300,000,000
Interest rate of debt instrument		4.375%
Proceeds from debt, net		$ 296,250,000
2032 Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 300,000,000
Interest rate of debt instrument	6.625%
Proceeds from debt, net	$ 297,000
2017 Revolver borrowings \| Secured Debt
Debt Instrument [Line Items]
Face value of debt instrument												$ 150,000,000
Change in face amount									$ 299,105,000
2017 Revolver borrowings \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity												$ 600,000,000
Amended 2017 Term Loan \| Secured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity									449,105,000
Proceeds from senior notes			86,488,000
Repayments of senior debt			86,488,000
Amended 2017 Term Loan \| Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity									99,105,000		$ 133,050,000
Amended 2017 Revolver \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity									700,000,000
Amended 2017 Revolver \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Change in borrowing capacity									$ 100,000,000
Second Amended Term Loan, Canadian Dollars \| Secured Debt
Debt Instrument [Line Items]
Face value of debt instrument					$ 84,229,000					$ 106,440,000
Second Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Face value of debt instrument					130,000,000
Change in face amount					(150,000,000)
Proceeds from senior notes				188,750,000
Available lines of credit			110,000,000			110,000,000
Repayments of senior notes				$ 188,750,000
Second Amended Revolver \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					850,000,000
Change in borrowing capacity					150,000,000
Second Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Payments of debt issuance costs						1,122,000
2038 Notes
Debt Instrument [Line Items]
Interest paid						48,080,000	$ 58,368,000	$ 37,776,000
Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Long-term debt			300,000,000			300,000,000
Maximum borrowing capacity					$ 300,000,000
Deferred costs and other assets			1,096,000			1,096,000
Available lines of credit			100,000,000			100,000,000
Debt issuance costs			$ 1,161,000			$ 1,161,000
Third Amended Term Loan \| Minimum \| Secured Debt
Debt Instrument [Line Items]
Line of credit facility, commitment fees percentage						0.175%
Third Amended Term Loan \| Maximum \| Secured Debt
Debt Instrument [Line Items]
Line of credit facility, commitment fees percentage						0.35%
Fourth Amended Credit Facility
Debt Instrument [Line Items]
Debt instrument, covenant, leverage ratio			4.50			4.50
Debt instrument, covenant, leverage ratio			4.00			4.00
Fourth Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Percentage of capital stock collateralizing debt						65.00%
Fourth Amended Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt instrument, covenant, leverage ratio			4.00			4.00
Debt instrument, covenant, leverage ratio			3.50			3.50
Fourth Amended Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt instrument, covenant, leverage ratio			4.25			4.25
Consideration transferred						$ 250,000,000
Debt instrument, covenant, leverage ratio			4.25			4.25
Fourth Amended Credit Facility \| Revolving Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Optional increase in line of credit maximum borrowing capacity			$ 350,000,000			$ 350,000,000
Third And Fourth Amended Credit Facilities \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Payments of debt issuance costs						$ 4,061,000
Federal Funds Effective Rate \| Second Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						0.50%
Federal Funds Effective Rate \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						0.50%
Eurocurrency Base Rate \| Second Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.00%
Eurocurrency Base Rate \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.00%
Canadian Dollar Offered Rate (CDOR) \| Second Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						0.50%
Secured Overnight Financing Rate \| Second Amended Credit Facility \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.125%
Secured Overnight Financing Rate \| Second Amended Credit Facility \| Minimum \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.125%
Secured Overnight Financing Rate \| Second Amended Credit Facility \| Maximum \| Line Of Credit And Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						2.25%
Secured Overnight Financing Rate \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						0.10%
Secured Overnight Financing Rate \| Third Amended Term Loan \| Secured Debt \| Net Leverage Ratio
Debt Instrument [Line Items]
Interest at a floating rate						1.375%
Secured Overnight Financing Rate \| Third Amended Term Loan \| Minimum \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.375%
Secured Overnight Financing Rate \| Third Amended Term Loan \| Maximum \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						2.50%
Base Rate \| Third Amended Term Loan \| Minimum \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						0.375%
Base Rate \| Third Amended Term Loan \| Maximum \| Secured Debt
Debt Instrument [Line Items]
Interest at a floating rate						1.50%
Debt Instrument, Redemption, Period One \| 2027 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage		100.00%
Debt Instrument, Redemption, Period One \| 2032 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Debt Instrument, Redemption, Period One \| Second Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						$ 2,607,000
Debt Instrument, Redemption, Period One \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						3,750,000
Debt Instrument, Redemption, Period Two \| 2027 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage		100.00%
Debt Instrument, Redemption, Period Two \| 2032 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Debt Instrument, Redemption, Period Two \| Second Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						3,911,000
Debt Instrument, Redemption, Period Two \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						5,625,000
Debt Instrument, Redemption, Period Three \| 2027 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage		101.00%
Debt Instrument, Redemption, Period Three \| 2032 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage	106.625%
Debt instrument, redemption price, percentage of principal amount redeemed	40.00%
Debt Instrument, Redemption, Period Three \| Second Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						5,215,000
Debt Instrument, Redemption, Period Three \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						7,500,000
Debt Instrument, Redemption, Period Four \| 2032 Notes \| Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage	101.00%
Debt Instrument, Redemption, Period Four \| Second Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						156,448,000
Debt Instrument, Redemption, Period Four \| Third Amended Term Loan \| Secured Debt
Debt Instrument [Line Items]
Periodic payment						$ 232,500,000

Income Taxes - Schedule of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Current:
Federal	$ 21,785	$ 21,203	$ 9,558
State	3,252	5,654	4,022
Foreign	27,396	23,208	15,333
Total current income tax expense	52,433	50,065	28,913
Deferred income tax (benefit) expense
Federal	(25,008)	(18,370)	1,183
State	(3,564)	(2,534)	(1,453)
Foreign	(772)	5,668	1,385
Total deferred income tax (benefit) expense	(29,344)	(15,236)	1,115
Total income tax expense	$ 23,089	$ 34,829	$ 30,028

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Company's Other Intangible Assets

Information regarding the Company’s other intangible assets are as follows:


	March 31,
	2024						2023
	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Indefinite-lived intangible assets:
Trademarks	$	131,167	$	(953)	$	130,214	$	144,702	$	(953)	$	143,749
Finite-lived intangible assets:
Customer relationships	295,215		(147,833)		147,382		295,293		(130,262)		165,031
Non-compete	2,825		(2,825)		—		2,825		(2,825)		—
Technology	96,708		(55,969)		40,739		96,713		(47,585)		49,128
Trademarks	9,554		(8,482)		1,072		8,946		(6,442)		2,504
Licenses	1,196		(1,196)		—		1,196		(1,196)		—
Total	$	536,665	$	(217,258)	$	319,407	$	549,675	$	(189,263)	$	360,412

Schedule Of Changes In The Carrying Amount Of Goodwill By Business Segment

The following table presents the changes in the carrying amount of goodwill by segment during fiscal 2023 and 2024:


	Energy Systems		Motive Power		Specialty		Total





Balance at March 31, 2022	$	279,461	$	323,303	$	97,876	$	700,640
Foreign currency translation adjustment	(21,257)		(1,773)		(895)		(23,925)
Balance at March 31, 2023	$	258,204	$	321,530	$	96,981	$	676,715
Acquisitions	—		4,390		—		4,390
Foreign currency translation adjustment	807		798		224		1,829
Balance at March 31, 2024	$	259,011	$	326,718	$	97,205	$	682,934

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-2

+ Details

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill by Business Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Goodwill [Roll Forward]
Balance at beginning of year	$ 676,715	$ 700,640
Foreign currency translation adjustment	1,829	(23,925)
Acquisitions	4,390
Balance at end of year	682,934	676,715
Energy Systems
Goodwill [Roll Forward]
Balance at beginning of year	258,204	279,461
Foreign currency translation adjustment	807	(21,257)
Acquisitions	0
Balance at end of year	259,011	258,204
Motive Power
Goodwill [Roll Forward]
Balance at beginning of year	321,530	323,303
Foreign currency translation adjustment	798	(1,773)
Acquisitions	4,390
Balance at end of year	326,718	321,530
Specialty
Goodwill [Roll Forward]
Balance at beginning of year	96,981	97,876
Foreign currency translation adjustment	224	(895)
Acquisitions	0
Balance at end of year	$ 97,205	$ 96,981

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References + Details

Other (Income) Expense, Net (Tables)

12 Months Ended

Mar. 31, 2024

Other Income and Expenses [Abstract]

Summary Of Other (Income) Expense, Net

Other (income) expense, net consists of the following:


	Fiscal year ended March 31,
	2024		2023		2022
Cost of Funds Asset Securitization	$	8,776	$	2,314	$	—
Non-service components of pension expense	1,530		315		430
Foreign exchange transaction (gains) losses	(6,053)		671		(7,169)
Other	5,178		4,893		1,274
Total	$	9,431	$	8,193	$	(5,465)

Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 8,775	$ 12,219	$ 12,992
Provision for Expected Credit Losses	1,873	(431)	2,621
Write-offs, net of Recoveries and Other	(2,541)	(3,013)	(3,394)
Balance at End of Period	$ 8,107	$ 8,775	$ 12,219

Business Segments (Detail) $ in Thousands	12 Months Ended
Business Segments (Detail) $ in Thousands	Mar. 31, 2024 USD ($) segments Country	Mar. 31, 2023 USD ($)	Mar. 31, 2022
Segment Reporting Information [Line Items]
Number of operating segments \| segments	4
Operations in number of countries \| Country	100
Property, plant, and equipment, net	$ 532,450	$ 513,283
United States
Segment Reporting Information [Line Items]
Property, plant, and equipment, net	$ 357,416	$ 336,970
United States \| Geographic Concentration Risk \| Revenue Benchmark
Segment Reporting Information [Line Items]
Percentage of sales to customers	60.20%	63.40%	60.70%

Stockholders’ Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Number of shares of common stock purchased (in shares)	1,002,415	358,365	1,996,334
Repurchased common stock value	$ 95,690	$ 22,907	$ 156,366
Treasury stock (in shares)	16,091,988	15,103,554
Employee Stock Purchase Plan
Class of Stock [Line Items]
Shares issued in ESPP (USD per share)	$ 62.55	$ 62.55	$ 62.55
Common Stock \| Employee Stock Purchase Plan
Class of Stock [Line Items]
Shares issued in employee stock purchase plan (in shares)	13,981	17,077	13,858

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended		48 Months Ended
	Mar. 31, 2024 USD ($) segments	Mar. 31, 2023 USD ($)	Mar. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents include all highly liquid investments with an original maturity, when purchased, in months	3 months
Increase (decrease) in cost of goods and income tax payable \| $	$ (136,360)	$ (17,283)
Number of operating segments	4
Number of reportable segments	4
Restricted Stock and Restricted Stock Units
Summary Of Significant Accounting Policies [Line Items]
Percentage of restricted stock units granted, vested per year	25.00%
Vesting period, in years	4 years
Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Vesting period, in years			3 years
Total shareholder return, return from average grant price, percentage			25.00%
Minimum
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, consolidated	50.00%
Estimated useful lives of finite-lived assets	3 years
Minimum \| Investments In Affiliates
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, equity method	20.00%
Minimum \| Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Total shareholder return, number of awards granted, percentage			0.00%
Minimum \| Energy Systems Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	1 year
Minimum \| Motive Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	1 year
Minimum \| Specialty Transportation Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	1 year
Minimum \| Building and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life	10 years
Minimum \| Machinery and equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, cost method	20.00%
Estimated useful lives of finite-lived assets	20 years
Maximum \| Investments In Affiliates
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, equity method	50.00%
Maximum \| Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Total shareholder return, number of awards granted, percentage			200.00%
Maximum \| Energy Systems Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	20 years
Maximum \| Motive Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	5 years
Maximum \| Specialty Transportation Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	4 years
Maximum \| Building and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life	33 years
Maximum \| Machinery and equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life	15 years

Retirement Plans - Net Periodic Pension Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0
Interest cost	657	582	517
Expected return on plan assets	(424)	(455)	(526)
Amortization and deferral	0	0	7
Net periodic benefit cost	233	127	(2)
International Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	884	918	1,114
Interest cost	2,215	1,715	1,427
Expected return on plan assets	(1,244)	(2,005)	(2,200)
Amortization and deferral	326	478	1,205
Net periodic benefit cost	$ 2,181	$ 1,106	$ 1,546

Accrued Expenses (Tables)

12 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Summary Of Accrued Expenses

Accrued expenses consist of the following:


	March 31,
	2024		2023
Payroll and benefits	$	84,734	$	80,826
Accrued selling expenses	46,738		47,330
Contract liabilities	27,649		34,594
Warranty	26,304		24,226
Operating lease liabilities	19,280		21,230
VAT and other non-income taxes	17,595		15,321
Freight	16,549		16,482
Income taxes payable (1)	16,716		8,152
Interest	9,201		7,531


Other	58,954		53,255
Total	$	323,720	$	308,947

(1)Income taxes payable includes amounts relating to the Tax Act - Transition Tax totaling $11,572 net of income taxes payable in a prepaid position of $3,420 for fiscal 2023.

Business Segments

12 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Business Segments

The Company's chief operating decision maker, or CODM (the Company's Chief Executive Officer), reviews financial information for purposes of assessing business performance and allocating resources, by focusing on the lines of business on a global basis. The Company identifies the following as its four operating segments, based on lines of business:

•Energy Systems - uninterruptible power systems, or “UPS” applications for computer and computer-controlled systems used in data centers, as well as telecommunications systems, switchgear and electrical control systems used in industrial facilities and electric utilities, large-scale energy storage and energy pipelines. Energy Systems also includes highly integrated power solutions and services to broadband, telecom, data center, and renewable and industrial customers, as well as thermally managed cabinets and enclosures for electronic equipment and batteries.

•Motive Power - power for electric industrial forklifts used in manufacturing, warehousing and other material handling

applications, AGVs, as well as mining equipment, diesel locomotive starting and other rail equipment.

•Specialty - premium batteries for starting, lighting and ignition applications in premium automotive and large over-the-road trucks, energy storage solutions for satellites, spacecraft, commercial aircraft, military land vehicles, aircraft,

submarines, ships and other tactical vehicles, as well as medical devices and equipment; and

•New Ventures - energy storage and management systems for demand charge reduction, utility back-up power, and dynamic fast charging for electric vehicles

The operating segments of Energy Systems, Motive Power, and Specialty also represent the Company's reportable segments under ASC 280, Segment Reporting. The results of New Ventures include start-up and operating expenses captured within the "Corporate and other" category of operating earnings.

Summarized financial information related to the Company’s reportable segments at March 31, 2024, 2023 and 2022 and for each of the fiscal years then ended is shown below.


	Fiscal year ended March 31,
	2024		2023		2022
Net sales by segment to unaffiliated customers
Energy Systems	$	1,590,023	$	1,738,195	$	1,536,673
Motive Power	1,456,181		1,451,244		1,361,254
Specialty	535,667		519,140		459,392
Total net sales	$	3,581,871	$	3,708,579	$	3,357,319
Operating earnings by segment
Energy Systems	$	86,955	$	90,400	$	48,875
Motive Power	214,650		179,972		172,396
Specialty	31,366		40,487		46,730
Corporate and other (3)	117,260		17,283		—

Inventory adjustment relating to exit activities - Energy Systems	(17,075)		211		(186)
Inventory adjustment relating to exit activities - Motive	—		(892)		(2,418)
Inventory adjustment relating to exit activities - Specialty	(3,098)		—		—
Restructuring and other exit charges - Energy Systems	(8,840)		(1,441)		(2,713)
Restructuring and other exit charges - Motive Power	(11,697)		(12,864)		(17,059)
Restructuring and other exit charges - Specialty	(7,566)		(2,134)		1,016

Impairment of indefinite-lived intangibles - Energy Systems	(13,619)		(100)		(501)
Impairment of indefinite-lived intangibles - Motive Power	—		—		(677)
Impairment of indefinite-lived intangibles - Specialty	—		(380)		—
Loss on assets held for sale - Motive Power	—		—		(2,973)
Total Amortization - Energy Systems	(24,503)		(27,383)		(29,277)
Total Amortization - Motive Power	(683)		(441)		(1,055)
Total Amortization - Specialty	(2,808)		(2,923)		(2,962)



Legal proceedings charge, net - Energy Systems	(3,705)		—		—

Other - Energy Systems	(3,740)		(712)		(1,628)
Other - Motive Power	(1,032)		(627)		(1,040)
Other - Specialty	(295)		(95)		(277)
Total operating earnings(2)	$	351,570	$	278,361	$	206,251

Capital Expenditures
Energy Systems	$	33,626	$	37,249	$	33,614
Motive Power	17,115		16,373		13,887
Specialty	35,596		35,150		26,540
Other	100		—		—
Total	$	86,437	$	88,772	$	74,041

Depreciation and Amortization
Energy Systems	$	49,469	$	52,034	$	54,580
Motive Power	23,690		22,404		24,918
Specialty	18,762		16,715		16,380
Other	100		—		—
Total	$	92,021	$	91,153	$	95,878

(1)Reportable segments do not record inter-segment revenues and accordingly there are none to report.

(2)The Company does not allocate interest expense or other (income) expense, net, to the reportable segments.

(3) Corporate and other includes amounts managed on a company-wide basis and not directly allocated to any reportable segments, primarily relating to IRA production tax credits. Also, included are start-up costs for exploration of a new lithium plant as well as start-up operating expenses from the New Ventures operating segment.

The Company's property, plant and equipment by reportable segments as of March 31, 2024 and 2023 are as follows:


	March 31, 2024		March 31, 2023
Property, plant and equipment, net
Energy Systems	$	189,519	$	199,414
Motive Power	145,395		142,301
Specialty	197,368		171,568
Other	168		$	—
Total	$	532,450	$	513,283

The Company markets its products and services in over 100 countries. Sales are attributed to countries based on the location of sales order approval and acceptance. Sales to customers in the United States were 60.2%, 63.4% and 60.7% for fiscal years ended March 31, 2024, 2023 and 2022, respectively. Property, plant and equipment, net, attributable to the United States as of March 31, 2024 and 2023, were $357,416 and $336,970, respectively. No single country, outside the United States, accounted for more than 10% of the consolidated net sales or net property, plant and equipment and, therefore, was deemed not material for separate disclosure.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//280/tableOfContent

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-26

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

+ Details

Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Other Liabilities Disclosure [Abstract]
Operating lease liabilities	$ 61,687	$ 66,555
Tax Act - Transition Tax	0	34,715
Warranty	34,515	32,404
Pension	25,512	24,528
Long-term interest rate swaps	19,167	15,760
Liability for uncertain tax positions	3,300	3,930
Contract liabilities	959	1,437
Other	6,742	23,613
Total	$ 151,882	$ 202,942

Inventories

12 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Inventories


	March 31,
	2024		2023
Raw materials	$	284,773	$	323,418
Work-in-process	115,191		123,401
Finished goods	297,734		350,979
Total	$	697,698	$	797,798

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 269,096	$ 175,810	$ 143,911
Other comprehensive (loss) income:
Net unrealized gain (loss) on derivative instruments, net of tax	(656)	(1,552)	2,603
Pension funded status adjustment, net of tax	(5,375)	8,214	8,310
Foreign currency translation adjustment	(15,521)	(46,941)	(38,397)
Total other comprehensive (loss) gain, net of tax	(21,552)	(40,279)	(27,484)
Total comprehensive income	247,544	135,531	116,427
Comprehensive gain (loss) attributable to noncontrolling interests	(175)	(300)	128
Comprehensive income attributable to EnerSys stockholders	$ 247,719	$ 135,831	$ 116,299

Retirement Plans - Pension Components Before Tax and Related Changes Net of Tax Recognized in AOCI (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Prior service cost	$ (85)	$ (128)	$ (174)
Net loss	(9,590)	(2,307)	(14,049)
Net amount recognized	$ (9,675)	$ (2,435)	$ (14,223)

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Deferred tax assets:
Accounts receivable	$ 309	$ 219
Inventories	13,472	6,387
Net operating loss carryforwards	51,005	48,801
Lease liabilities	20,081	20,888
Capitalized R&D Expenditures	32,740	16,378
Accrued expenses	35,132	31,949
Other assets	29,079	22,029
Gross deferred tax assets	181,818	146,651
Less valuation allowance	(35,754)	(31,172)	$ (31,017)	$ (31,928)
Total deferred tax assets	146,064	115,479
Deferred tax liabilities:
Property, plant and equipment	45,493	42,884
Lease Right-of-use assets	20,071	20,888
Intangible assets	56,726	59,152
Other liabilities	4,560	4,521
Total deferred tax liabilities	126,850	127,445
Net deferred tax assets (liabilities)	$ 19,214	$ 11,966

Business Segments (Tables)

12 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Summary Of Financial Information Related To The Company's Business Segments

Summarized financial information related to the Company’s reportable segments at March 31, 2024, 2023 and 2022 and for each of the fiscal years then ended is shown below.


	Fiscal year ended March 31,
	2024		2023		2022
Net sales by segment to unaffiliated customers
Energy Systems	$	1,590,023	$	1,738,195	$	1,536,673
Motive Power	1,456,181		1,451,244		1,361,254
Specialty	535,667		519,140		459,392
Total net sales	$	3,581,871	$	3,708,579	$	3,357,319
Operating earnings by segment
Energy Systems	$	86,955	$	90,400	$	48,875
Motive Power	214,650		179,972		172,396
Specialty	31,366		40,487		46,730
Corporate and other (3)	117,260		17,283		—

Inventory adjustment relating to exit activities - Energy Systems	(17,075)		211		(186)
Inventory adjustment relating to exit activities - Motive	—		(892)		(2,418)
Inventory adjustment relating to exit activities - Specialty	(3,098)		—		—
Restructuring and other exit charges - Energy Systems	(8,840)		(1,441)		(2,713)
Restructuring and other exit charges - Motive Power	(11,697)		(12,864)		(17,059)
Restructuring and other exit charges - Specialty	(7,566)		(2,134)		1,016

Impairment of indefinite-lived intangibles - Energy Systems	(13,619)		(100)		(501)
Impairment of indefinite-lived intangibles - Motive Power	—		—		(677)
Impairment of indefinite-lived intangibles - Specialty	—		(380)		—
Loss on assets held for sale - Motive Power	—		—		(2,973)
Total Amortization - Energy Systems	(24,503)		(27,383)		(29,277)
Total Amortization - Motive Power	(683)		(441)		(1,055)
Total Amortization - Specialty	(2,808)		(2,923)		(2,962)



Legal proceedings charge, net - Energy Systems	(3,705)		—		—

Other - Energy Systems	(3,740)		(712)		(1,628)
Other - Motive Power	(1,032)		(627)		(1,040)
Other - Specialty	(295)		(95)		(277)
Total operating earnings(2)	$	351,570	$	278,361	$	206,251

Capital Expenditures
Energy Systems	$	33,626	$	37,249	$	33,614
Motive Power	17,115		16,373		13,887
Specialty	35,596		35,150		26,540
Other	100		—		—
Total	$	86,437	$	88,772	$	74,041

Depreciation and Amortization
Energy Systems	$	49,469	$	52,034	$	54,580
Motive Power	23,690		22,404		24,918
Specialty	18,762		16,715		16,380
Other	100		—		—
Total	$	92,021	$	91,153	$	95,878

(1)Reportable segments do not record inter-segment revenues and accordingly there are none to report.

(2)The Company does not allocate interest expense or other (income) expense, net, to the reportable segments.

The Company's property, plant and equipment by reportable segments as of March 31, 2024 and 2023 are as follows:


	March 31, 2024		March 31, 2023
Property, plant and equipment, net
Energy Systems	$	189,519	$	199,414
Motive Power	145,395		142,301
Specialty	197,368		171,568
Other	168		$	—
Total	$	532,450	$	513,283

Property, Plant, and Equipment

12 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment

Property, plant, and equipment consist of:


	March 31,
	2024		2023
Land, buildings, and improvements	$	313,258	$	312,294
Machinery and equipment	930,858		881,198
Construction in progress	91,829		75,053
	1,335,945		1,268,545
Less accumulated depreciation	(803,495)		(755,262)
Total	$	532,450	$	513,283

Depreciation expense for the fiscal years ended March 31, 2024, 2023, and 2022 totaled $64,028, $60,405, and $62,584, respectively. Interest capitalized in connection with major capital expenditures amounted to $1,268, $857, and $447 for the fiscal years ended March 31, 2024, 2023 and 2022, respectively.

Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Payables and Accruals [Abstract]
Payroll and benefits	$ 84,734	$ 80,826
Accrued selling expenses	46,738	47,330
Contract liabilities	27,649	34,594
Warranty	26,304	24,226
Operating lease liabilities	19,280	21,230
VAT and other non-income taxes	17,595	15,321
Freight	16,549	16,482
Income taxes payable (1)	16,716	8,152
Interest	9,201	7,531
Other	58,954	53,255
Total	$ 323,720	308,947
Transition tax		11,572
Transition tax, prepaid position		$ 3,420

Debt - Long Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Long-term debt gross	$ 810,000	$ 1,048,413
Unamortized debt issuance expense	8,035	6,424
Long-term debt, net of unamortized issuance costs	801,965	1,041,989
Senior Notes
Debt Instrument [Line Items]
Long-term debt	600,000	300,000
Unamortized debt issuance expense	6,064	2,705
Line Of Credit And Secured Debt \| Fourth Amended Credit Facility, due 2026 \| Secured Debt
Debt Instrument [Line Items]
Incremental term loan commitment	210,000	748,413
Unamortized debt issuance expense	$ 1,971	$ 3,719

Retirement Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Expected cash contributions to pension plans in 2023	$ 1,532
Defined Contribution Pension
Defined Benefit Plan Disclosure [Line Items]
Employer expenses	22,819	$ 20,933	$ 18,402
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Employer expenses	0	0
International Plans
Defined Benefit Plan Disclosure [Line Items]
Employer expenses	$ 1,655	$ 6,428
International Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	65.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Pension plan benchmark funds and returns, term (in years)	3 years
Minimum \| United States Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Equity investments target range, minimum	40.00%
Minimum \| UNITED KINGDOM \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Equity investments target range, minimum	60.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Pension plan benchmark funds and returns, term (in years)	5 years
Maximum \| United States Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Equity investments target range, minimum	75.00%

Leases - Additional Information (Detail)	Mar. 31, 2024
Minimum
Lessee, Lease, Description [Line Items]
Contract term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Contract term	16 years

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Company Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	$ 0	$ 0
Senior Notes	600,000	300,000
Derivative Liability	(17,301)	(16,088)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Senior Notes	582,750	276,000
Derivative Liability	$ (17,301)	$ (16,088)

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480524/946-210-50-12

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-URI https://asc.fasb.org//1943274/2147480524/946-210-50-6

Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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+ Details

Summary of Significant Accounting Policies

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Description of Business

EnerSys (the “Company”) and its predecessor companies have been manufacturers of industrial batteries for over 125 years. EnerSys is a global leader in stored energy solutions for industrial applications. The Company manufactures, markets and distributes industrial batteries and related products such as chargers, outdoor cabinet enclosures, power equipment and battery accessories, and provides related after-market and customer-support services for its products. Additionally, the Company is also a provider of highly integrated power solutions and services to broadband, telecom, renewable and industrial customers.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries and any partially owned subsidiaries that the Company has the ability to control. Control generally equates to ownership percentage, whereby investments that are more than 50% owned are generally consolidated, investments in affiliates of 50% or less but greater than 20% are generally accounted for using the equity method, and investments in affiliates of 20% or less are accounted at cost minus impairment, if any. All intercompany transactions and balances have been eliminated in consolidation.

Foreign Currency Translation

Results of foreign operations of subsidiaries, whose functional currency is the local currency, are translated into U.S. dollars using average exchange rates during the periods. The assets and liabilities are translated into U.S. dollars using exchange rates as of the balance sheet dates. Gains or losses resulting from translating the foreign currency financial statements are accumulated as a separate component of accumulated other comprehensive income (“AOCI”) in EnerSys’ stockholders’ equity and noncontrolling interests.

Transaction gains and losses resulting from exchange rate changes on transactions denominated in currencies other than the functional currency of the applicable subsidiary are included in the Consolidated Statements of Income, within “Other (income) expense, net”, in the year in which the change occurs.

Revenue Recognition

The Company recognizes revenue when (or as) performance obligations are satisfied by transferring control of the performance obligation to a customer. Control of a performance obligation may transfer to the customer either at a point in time or over time depending on an evaluation of the specific facts and circumstances for each contract, including the terms and conditions of the contract as agreed with the customer, as well as the nature of the products or services to be provided.

The Company's primary performance obligation to its customers is the delivery of finished goods and products, pursuant to

purchase orders. Control of the products sold typically transfers to its customers at the point in time when the goods are shipped

as this is also when title generally passes to its customers under the terms and conditions of the customer arrangements.

Each customer purchase order sets forth the transaction price for the products and services purchased under that arrangement. Some customer arrangements include variable consideration, such as volume rebates, some of which depend upon the customers meeting specified performance criteria, such as a purchasing level over a period of time. The Company uses judgment to estimate the most likely amount of variable consideration at each reporting date. When estimating variable consideration, the Company also applies judgment when considering the probability of whether a reversal of revenue could occur and only recognize revenue subject to this constraint.

Service revenues related to the work performed for the Company’s customers by its maintenance technicians generally represent a separate and distinct performance obligation. Control for these services passes to the customer as the services are performed.

The Company's typical payment terms are 30 days and sales arrangements do not contain any significant financing component for its customers.

The Company uses historic customer product return data as a basis of estimation for customer returns and records the reduction of sales at the time revenue is recognized.

Freight charges billed to customers are included in sales and the related shipping costs are included in cost of sales in the Consolidated Statements of Income. If shipping activities are performed after a customer obtains control of a product, the Company applies a policy election to account for shipping as an activity to fulfill the promise to transfer the product to the customer.

The Company applies a policy election to exclude transaction taxes collected from customers from sales when the tax is both imposed on and concurrent with a specific revenue-producing transaction.

The Company generally provides customers with a product warranty that provides assurance that the products meet standard specifications and are free of defects. The Company maintains a reserve for claims incurred under standard product warranty programs. Performance obligations related to service warranties are not material to the Consolidated Financial Statements.

The Company pays sales commissions to its sales representatives, which may be considered as incremental costs to obtain a contract. However, since the recoverability period is less than one year, the Company has utilized the practical expedient to record these costs of obtaining a contract as an expense as they are incurred.

Warranties

The Company’s products are warranted for a period ranging from one to twenty years for Energy Systems batteries, from one to five years for Motive Power batteries and for a period ranging from one to four years for Specialty transportation batteries. The Company provides for estimated product warranty expenses when the related products are sold. The assessment of the adequacy of the reserve includes a review of open claims and historical experience.

Cash and Cash Equivalents

Cash and cash equivalents include all highly liquid investments with an original maturity of three months or less when purchased.

Concentration of Credit Risk

Financial instruments that subject the Company to potential concentration of credit risk consist principally of short-term cash investments and trade accounts receivable. The Company invests its cash with various financial institutions and in various investment instruments limiting the amount of credit exposure to any one financial institution or entity. The Company has bank deposits that exceed federally insured limits. In addition, certain cash investments may be made in U.S. and foreign government bonds, or other highly rated investments guaranteed by the U.S. or foreign governments. Concentration of credit risk with respect to trade receivables is limited by a large, diversified customer base and its geographic dispersion. The Company performs ongoing credit evaluations of its customers’ financial condition and requires collateral, such as letters of credit, in certain circumstances.

Accounts Receivable

Accounts receivable are recorded net of an allowance for expected credit losses. The Company maintains an allowance for credit losses for the expected failure or inability of its customers to make required payments. The Company recognizes the allowance for expected credit losses at inception and reassesses quarterly based on management’s expectation of the asset’s collectability. The allowance is based on multiple factors including historical experience with bad debts, the credit quality of the customer base, the aging of such receivables and current macroeconomic conditions, as well as management’s expectations of conditions in the future. The Company’s allowance for uncollectible accounts receivable is based on management’s assessment of the collectability of assets pooled together with similar risk characteristics. Accounts are written off when management determines the account is uncollectible. The following table sets forth the changes in the Company's allowance for doubtful

accounts:


	Balance at Beginning of Period		Provision for Expected Credit Losses		Write-offs, net of Recoveries and Other		Balance at End of Period
Fiscal year ended March 31, 2022	$	12,992	$	2,621	$	(3,394)	$	12,219
Fiscal year ended March 31, 2023	12,219		(431)		(3,013)		8,775
Fiscal year ended March 31, 2024	8,775		1,873		(2,541)		8,107

Inventories

Inventories are stated at the lower of cost or net realizable value. Cost is determined using the first-in, first-out (FIFO) method. The cost of inventory consists of material, labor, and associated overhead.

Property, Plant, and Equipment

Property, plant, and equipment are recorded at cost and include expenditures that substantially increase the useful lives of the assets. Depreciation is provided using the straight-line method over the estimated useful lives of the assets as follows: 10 to 33 years for buildings and improvements and 3 to 15 years for machinery and equipment.

Maintenance and repairs are expensed as incurred. Interest on capital projects is capitalized during the construction period.

Business Combinations

The Company records an acquisition using the acquisition method of accounting and recognizes the assets acquired and liabilities assumed at their fair values as of the date of the acquisition. The excess of the purchase price over the net tangible and intangible assets is recorded to goodwill. The results of operations of the acquired business are included in the Company’s operating results from the date of acquisition.

Goodwill and Other Intangible Assets

Goodwill and indefinite-lived trademarks are tested for impairment at least annually and whenever events or circumstances occur indicating that a possible impairment may have been incurred. The Company assesses whether goodwill impairment exists using both the qualitative and quantitative assessments. The qualitative assessment involves determining whether events or circumstances exist that indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If based on this qualitative assessment the Company determines it is more likely than not that the fair value of a reporting unit is less than its carrying amount, or if the Company elects not to perform a qualitative assessment, a quantitative assessment is performed by determining the fair value of the Company's reporting units.

Goodwill is tested for impairment by determining the fair value of the Company’s reporting units. These estimated fair values are based on financial projections, certain cash flow measures, and market capitalization.

The Company estimates the fair value of its reporting units using a weighting of fair values derived from both the income approach and the market approach. Under the income approach, the Company calculates the fair value of a reporting unit based on the present value of estimated future cash flows. Cash flow projections are based on management's estimates of revenue growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on the weighted-average cost of capital adjusted for the relevant risk associated with business-specific characteristics and the uncertainty related to the business's ability to execute on the projected cash flows. The market approach estimates fair value based on market multiples of revenue and earnings derived from comparable publicly-traded companies with similar operating and investment characteristics as the reporting unit. The weighting of the fair value derived from the market approach ranges from 0% to 50% depending on the level of comparability of these publicly-traded companies to the reporting unit.

In order to assess the reasonableness of the calculated fair values of its reporting units, the Company also compares the sum of the reporting units' fair values to its market capitalization and calculates an implied control premium (the excess of the sum of the reporting units' fair values over the market capitalization). The Company evaluates the control premium by comparing it to control premiums of recent comparable market transactions.

The Company assesses whether indefinite-lived intangible assets impairment exists using both the qualitative and quantitative assessments. The qualitative assessment involves determining whether events or circumstances exist that indicate it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount. If based on this qualitative assessment, the Company determines it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount or if the Company elects not to perform a qualitative assessment, a quantitative assessment is performed to determine whether an indefinite-lived intangible asset impairment exists. The Company tests the indefinite-lived intangible assets for impairment by comparing the carrying value to the fair value based on current revenue projections of the related operations, under the relief from royalty method. Any excess of the carrying value over the amount of fair value is recognized as an impairment. Any such impairment is recognized in the reporting period in which it has been identified.

Finite-lived assets such as customer relationships, technology, trademarks, licenses, and non-compete agreements are amortized on a straight-line basis over their estimated useful lives, generally over periods ranging from 3 to 20 years. The Company continually evaluates the reasonableness of the useful lives of these assets.

Impairment of Long-Lived Assets

The Company reviews the carrying values of its long-lived assets to be held and used for possible impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable, based on undiscounted estimated cash flows expected to result from its use and eventual disposition. The factors considered by the Company in performing this assessment include current operating results, trends and other economic factors. In assessing the recoverability of the carrying value of a long-lived asset, the Company must make assumptions regarding future cash flows and other factors. If these estimates or the related assumptions change in the future, the Company may be required to record an impairment loss for these assets.

Environmental Expenditures

The Company records a loss and establishes a reserve for environmental remediation liabilities when it is probable that an asset has been impaired or a liability exists and the amount of the liability can be reasonably estimated. Reasonable estimates involve judgments made by management after considering a broad range of information including notifications, demands or settlements that have been received from a regulatory authority or private party, estimates performed by independent engineering companies and outside counsel, available facts, existing and proposed technology, the identification of other potentially responsible parties, their ability to contribute and prior experience. These judgments are reviewed quarterly as more information is received and the amounts reserved are updated as necessary. However, the reserves may materially differ from ultimate actual liabilities if the loss contingency is difficult to estimate or if management’s judgments turn out to be inaccurate. If management believes no best estimate exists, the minimum probable loss is accrued.

Derivative Financial Instruments

The Company utilizes derivative instruments to mitigate volatility related to interest rates, lead prices and foreign currency exposures. The Company does not hold or issue derivative financial instruments for trading or speculative purposes. The Company recognizes derivatives as either assets or liabilities in the accompanying Consolidated Balance Sheets and measures those instruments at fair value. Changes in the fair value of those instruments are reported in AOCI if they qualify for hedge accounting or in earnings if they do not qualify for hedge accounting. Derivatives qualify for hedge accounting if they are designated as hedge instruments and if the hedge is highly effective in achieving offsetting changes in the fair value or cash flows of the asset or liability hedged. For lead and foreign currency forward contracts, effectiveness is measured on a regular basis using statistical analysis and by comparing the overall changes in the expected cash flows of the hedging instrument with the changes in the expected all-in cash outflow required for the underlying lead and foreign currency purchases. This analysis is performed on the initial purchases quarterly that cover the quantities hedged. Accordingly, gains and losses from changes in derivative fair value of effective hedges are deferred and reported in AOCI until the underlying transaction affects earnings. In the case of cross currency fixed interest rate swap agreements, the swaps are remeasured with changes in fair value recognized in foreign currency translation adjustment within AOCI to offset the translation risk from the underlying investments. Balances in the foreign currency translation adjustment accounts remain until the sale or substantially complete liquidation of the foreign entity, upon which they are recognized as a component of income (expense).

The Company has commodity, foreign exchange and interest rate hedging authorization from the Board of Directors and has established a hedging and risk management program that includes the management of market and counterparty risk. Key risk control activities designed to ensure compliance with the risk management program include, but are not limited to, credit review and approval, validation of transactions and market prices, verification of risk and transaction limits, portfolio stress tests,

sensitivity analyses and frequent portfolio reporting, including open positions, determinations of fair value and other risk management metrics.

Market risk is the potential loss the Company and its subsidiaries may incur as a result of price changes associated with a particular financial or commodity instrument. The Company utilizes forward contracts, options, and swaps as part of its risk management strategies, to minimize unanticipated fluctuations in earnings caused by changes in commodity prices, interest rates and / or foreign currency exchange rates. All derivatives are recognized on the balance sheet at their fair value, unless they qualify for the Normal Purchase Normal Sale exemption.

Credit risk is the potential loss the Company may incur due to the counterparty’s non-performance. The Company is exposed to credit risk from interest rate, foreign currency and commodity derivatives with financial institutions. The Company has credit policies to manage their credit risk, including the use of an established credit approval process, monitoring of the counterparty positions and the use of master netting agreements.

The Company has elected to offset net derivative positions under master netting arrangements. The Company does not have any positions involving cash collateral (payables or receivables) under a master netting arrangement as of March 31, 2024 and 2023.

The Company does not have any credit-related contingent features associated with its derivative instruments.

Fair Value of Financial Instruments

The Company groups its recurring, non-recurring and disclosure-only fair value measurements into the following levels when making fair value measurement disclosures:


Level 1						Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2						Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data.

Level 3						Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable.

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (an exit price). The Company and its subsidiaries use, as appropriate, a market approach (generally, data from market transactions), an income approach (generally, present value techniques and option-pricing models), and / or a cost approach (generally, replacement cost) to measure the fair value of an asset or liability. These valuation approaches incorporate inputs such as observable, independent market data and / or unobservable data that management believes are predicated on the assumptions market participants would use to price an asset or liability. These inputs may incorporate, as applicable, certain risks such as nonperformance risk, which includes credit risk.

Lead contracts, foreign currency contracts and interest rate contracts generally use an income approach to measure the fair value of these contracts, utilizing readily observable inputs, such as forward interest rates (e.g., Secured Overnight Financing Rate "SOFR"), forward foreign currency exchange rates (e.g., GBP and euro) and commodity prices (e.g., London Metals Exchange), as well as inputs that may not be observable, such as credit valuation adjustments. When observable inputs are used to measure all or most of the value of a contract, the contract is classified as Level 2. Over-the-counter (OTC) contracts are valued using quotes obtained from an exchange, binding and non-binding broker quotes. Furthermore, the Company obtains independent quotes from the market to validate the forward price curves. OTC contracts include forwards, swaps and options. To the extent possible, fair value measurements utilize various inputs that include quoted prices for similar contracts or market-corroborated inputs.

When unobservable inputs are significant to the fair value measurement, the asset or liability is classified as Level 3. Additionally, Level 2 fair value measurements include adjustments for credit risk based on the Company’s own creditworthiness (for net liabilities) and its counterparties’ creditworthiness (for net assets). The Company assumes that observable market prices include sufficient adjustments for liquidity and modeling risks. The Company did not have any fair value measurements that transferred between Level 2 and Level 3 as well as Level 1 and Level 2.

Income Taxes

The Company accounts for income taxes using the asset and liability approach, which requires deferred tax assets and liabilities be recognized using enacted tax rates to measure the effect of temporary differences between book and tax bases on recorded assets and liabilities. Valuation allowances are recorded to reduce deferred tax assets, if it is more likely than not some portion or all of the deferred tax assets will not be realized. The need to establish valuation allowances against deferred tax assets is assessed quarterly. The primary factors used to assess the likelihood of realization are expected reversals of taxable temporary timing differences, forecasts of future taxable income and available tax planning strategies that could be implemented to realize the net deferred tax assets.

The Company recognizes tax related interest and penalties in income tax expense in its Consolidated Statement of Income.

With respect to accounting for uncertainty in income taxes, the Company evaluates tax positions to determine whether the benefits of tax positions are more likely than not of being sustained upon audit based on the technical merits of the tax position. For tax positions that are more likely than not of being sustained upon audit, the Company recognizes the largest amount of the benefit that is greater than 50% likely of being realized upon ultimate settlement. For tax positions that are not more likely than not of being sustained upon audit, the Company does not recognize any portion of the benefit. If the more likely than not threshold is not met in the period for which a tax position is taken, the Company may subsequently recognize the benefit of that tax position if the tax matter is effectively settled, the statute of limitations expires, or if the more likely than not threshold is met in a subsequent period.

No additional income taxes have been provided for any undistributed foreign earnings or any additional outside basis difference inherent in these entities, as these amounts continue to be indefinitely reinvested in foreign operations.

Regarding the GILTI tax rules, the Company is allowed to make an accounting policy choice of either (1) treating the taxes due on future US inclusions in taxable income as a current-period expense when incurred (“period cost method”) or (2) factoring amounts into a Company’s measurement of its deferred taxes (“deferred method”). The Company has elected the period cost method.

Production Credits Under the Inflation Reduction Act

On August 16, 2022, the Inflation Reduction Act of 2022 (“IRA”) was enacted, and on December 14, 2023, the United States Treasury issued proposed regulations, which provided further guidance related to the Section 45X Advanced Manufacturing Production Credit (AMPC). The IRA includes multiple incentives to promote clean energy, and energy storage manufacturing among other provisions with tax credits available from 2023 to 2032, subject to phase out beginning in 2030. In particular, the IRA creates a refundable tax credit, pursuant to Section 45X of the Internal Revenue Code (“IRC”), for battery cells and battery modules manufactured or assembled in the United States and sold to third parties as well a credit for electrode active material for batteries.

Refundable tax credits are accounted for by analogy to government grants, as the taxpayer can realize the benefit regardless of whether or not they have an income tax liability. Therefore, these amounts are not considered income taxes and fall outside the scope of Topic 740.

The Company accounts for government assistance that is not subject to the scope of ASC 740 using a grant accounting model, by analogy to International Accounting Standards 20, Accounting for Government Grants and Disclosure of Government Assistance, and recognizes such grants when the Company has reasonable assurance that it will comply with the grant’s conditions and that the grant will be received. The Company recognizes these credits as a reduction in cost of sales within the Consolidated Statement of Income as revenue and costs are recognized on the qualifying finished goods. The AMPCs are also reflected in the Consolidated Balance Sheet as a reduction of income tax payable within accrued expenses and other liabilities. Any credit generated in excess of those liabilities would be recorded as a refund of taxes and reflected in other current assets.

In fiscal 2024 and 2023, the IRA impact resulted in a reduction of our costs of goods sold and income tax payable of $136,360 and $17,283, respectively.

Deferred Financing Fees

Debt issuance costs that are incurred by the Company in connection with the issuance of debt are deferred and amortized to interest expense over the life of the underlying indebtedness, adjusted to reflect any early repayments and are shown as a deduction from long-term debt.

Stock-Based Compensation Plans

The Company measures the cost of employee services received in exchange for the award of an equity instrument based on the grant-date fair value of the award, with such cost recognized over the applicable vesting period.

Market condition-based awards

The Company grants market condition-based awards and performance condition-based awards.

Beginning in fiscal 2017 and until fiscal 2020, the Company granted market condition-based awards (“TSR”). A participant may earn between 0% to 200% of the number of awards granted, based on the total shareholder return of the Company's common stock over a three-year period, relative to the shareholder return of a defined peer group. The awards cliff vest on the third anniversary of the date of grant and are settled in common stock on the first anniversary of the vesting date. The TSR is calculated by dividing the sixty or ninety calendar day average price at end of the period (as applicable) and the reinvested dividends thereon by such sixty or ninety calendar day average price at start of the period. The maximum number of awards earned is capped at 200% of the target award. Additionally, no payout will be awarded in the event that the TSR at the vesting date reflects less than a 25% return from the average price at the grant date. These share units are similar to the share units granted prior to fiscal 2016, except that under these awards, the targets are more difficult to achieve as they are tied to the TSR of a defined peer group. The fair value of these awards is estimated at the date of grant, using a Monte Carlo Simulation.

The Company recognizes compensation expense using the straight-line method over the life of the market condition-based awards except for those issued to certain retirement-eligible participants, which are expensed on an accelerated basis.

Restricted Stock Units

The fair value of restricted stock units is based on the closing market price of the Company’s common stock on the date of grant. These awards generally vest, and are settled in common stock, at 25% per year, over a four-year period from the date of grant. The Company recognizes compensation expense using the straight-line method over the life of the restricted stock units.

Stock Options

The fair value of the options granted is estimated at the date of grant using the Black-Scholes option-pricing model utilizing assumptions based on historical data and current market data. The assumptions include expected term of the options, risk-free interest rate, expected volatility, and dividend yield. The expected term represents the expected amount of time that options granted are expected to be outstanding, based on historical and forecasted exercise behavior. The risk-free rate is based on the rate at the grant date of zero-coupon U.S. Treasury Notes with a term equal to the expected term of the option. Expected volatility is estimated using historical volatility rates based on historical weekly price changes over a term equal to the expected term of the options. The Company’s dividend yield is based on historical data. The Company recognizes compensation expense using the straight-line method over the vesting period of the options except for those issued to certain retirement-eligible participants, which are expensed on an accelerated basis.

Forfeitures

Forfeitures of share-based awards are estimated at the time of grant and revised, if necessary, in subsequent periods if actual

forfeitures differ from those estimates.

Earnings Per Share

Basic earnings per common share (“EPS”) are computed by dividing net earnings attributable to EnerSys stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock utilizing the treasury stock method. At March 31, 2024, 2023 and 2022, the Company had outstanding stock options, restricted stock units, market condition and performance condition-based awards, which could potentially dilute basic earnings per share in the future.

Segment Reporting

The Company's chief operating decision maker, or CODM (the Company's Chief Executive Officer), reviews financial information for purposes of assessing business performance and allocating resources, by focusing on the lines of business on a global basis. The Company excludes certain items that are not included in the segment performance as these are managed and viewed on a consolidated basis. The Company identifies the following as its four operating segments, based on lines of business:

•Motive Power - power for electric industrial forklifts used in manufacturing, warehousing and other material handling

applications, AGVs, as well as mining equipment, diesel locomotive starting and other rail equipment.

submarines, ships and other tactical vehicles, as well as medical devices and equipment; and

•New Ventures - energy storage and management systems for demand charge reduction, utility back-up power, and dynamic fast charging for electric vehicles

The operating segments of Energy Systems, Motive Power, and Specialty also represent the Company's reportable segments under ASC 280, Segment Reporting.

Recently Issued Accounting Standards not yet adopted

In November 2023, the Financial Accounting Standards Board issued new guidance that requires incremental disclosures related to reportable segments. That standard requires disclosure, on an annual and interim basis, of significant segment expenses that are regularly provided to the chief operating decision maker ("CODM") and included within each reported measure of profit or loss. The title and position of the CODM and how the reported measure of segment profit or loss is used by the CODM to assess segment performance and allocate resources is also required to be disclosed. The standard also permits disclosure of additional measures of segment profit. The standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is currently evaluating the impact of adopting this standard on its disclosures.

In December 2023, the Financial Accounting Standards Board issued a final standard on improvements to income tax disclosures. The standard requires disclosure of specific categories within the effective tax rate reconciliation and details about significant reconciling items, subject to a quantitative threshold. The standard also requires information on income taxes paid disaggregated by federal, state and foreign based on a quantitative threshold. The standard is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The standard is applied prospectively with an option for retrospective adoption. The Company is currently evaluating the impact of adopting this standard on its disclosures.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These estimates and assumptions take into account historical and forward looking factors that the Company believes are reasonable, and the Company’s estimates and assumptions may evolve as conditions change. Actual results could differ from those estimates.

Examples of significant estimates include the allowance for credit losses, the recoverability of property, plant and equipment, the incremental borrowing rate for lease liabilities, the recoverability of intangible assets and other long-lived assets, fair value measurements, including those related to financial instruments, fair value of goodwill and intangible assets, valuation allowances on tax assets, production tax credits under the Inflation Reduction Act, pension and postretirement benefit obligations, contingencies and the identification and valuation of assets acquired and liabilities assumed in connection with business combinations.

Retirement Plans - Summary of Estimated Future Benefit Payments (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	$ 3,328
2026	3,312
2027	3,454
2028	4,236
2029	4,616
Years 2030-2034	$ 23,925

Stock Based Compensation Stock-Based Compensation - Summary of Assumptions Used for Market Share Units (Detail) - Stock Options	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	4.24%	2.92%	0.89%
Dividend yield	0.95%	0.99%	0.76%
Expected life (years)	6 years	6 years	6 years
Volatility	38.30%	37.40%	37.30%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Accounts Receivable (Tables)

12 Months Ended

Mar. 31, 2024

Receivables [Abstract]

Schedule Of Accounts, Notes, Loans And Financing Receivable

The following table sets forth the changes in the Company's allowance for doubtful

accounts:


	Balance at Beginning of Period		Provision for Expected Credit Losses		Write-offs, net of Recoveries and Other		Balance at End of Period
Fiscal year ended March 31, 2022	$	12,992	$	2,621	$	(3,394)	$	12,219
Fiscal year ended March 31, 2023	12,219		(431)		(3,013)		8,775
Fiscal year ended March 31, 2024	8,775		1,873		(2,541)		8,107

Accounts Receivable


	March 31,
	2024		2023
Accounts receivable	$	532,832	$	646,592
Allowance for doubtful accounts	8,107		8,775
Accounts receivable, net	$	524,725	$	637,817

Stockholders' Equity - Change in Number of Shares of Common Stock Outstanding (Detail) - shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding, beginning balance (in shares)	40,901,059	40,986,658	42,753,020
Purchase of treasury stock (in shares)	(1,002,415)	(358,365)	(1,996,334)
Shares issued as part of equity-based compensation plans, net of equity awards surrendered for option price and taxes (in shares)	373,292	272,766	229,972
Shares outstanding, ending balance (in shares)	40,271,936	40,901,059	40,986,658

Debt (Tables)

12 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule Of Long-Term Debt

The following summarizes the Company’s long-term debt as of March 31, 2024 and March 31, 2023:


	2024				2023
	Principal		Unamortized Issuance Costs		Principal		Unamortized Issuance Costs
Senior Notes	$	600,000	$	6,064	$	300,000	$	2,705
Fourth Amended Credit Facility, due 2026	210,000		1,971		748,413		3,719
	$	810,000	$	8,035	$	1,048,413	$	6,424
Less: Unamortized issuance costs	8,035				6,424

Long-term debt, net of unamortized issuance costs	$	801,965			$	1,041,989

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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+ Details

Stockholders’ Equity

12 Months Ended

Mar. 31, 2024

Equity [Abstract]

Stockholders’ Equity

Preferred Stock and Common Stock

The Company’s certificate of incorporation authorizes the issuance of up to 1,000,000 shares of preferred stock, par value $0.01 per share (“Preferred Stock”). At March 31, 2024 and 2023, no shares of Preferred Stock were issued or outstanding. The Board of Directors of the Company has the authority to specify the terms of any Preferred Stock at the time of issuance.

The following demonstrates the change in the number of shares of common stock outstanding during fiscal years ended March 31, 2022, 2023 and 2024, respectively:



Shares outstanding as of March 31, 2021			42,753,020
Purchase of treasury stock			(1,996,334)

Shares issued towards equity-based compensation plans, net of equity awards surrendered for option price and taxes			229,972
Shares outstanding as of March 31, 2022			40,986,658
Purchase of treasury stock			(358,365)
Shares issued under equity-based compensation plans, net of equity awards surrendered for option price and taxes			272,766
Shares outstanding as of March 31, 2023			40,901,059
Purchase of treasury stock			(1,002,415)
Shares issued under equity-based compensation plans, net of equity awards surrendered for option price and taxes			373,292
Shares outstanding as of March 31, 2024			40,271,936

Treasury Stock

In fiscal 2024, the Company purchased 1,002,415 shares for $95,690. The Company purchased 358,365 shares for $22,907 in fiscal 2023 and 1,996,334 shares for $156,366 in fiscal 2022. At March 31, 2024 and 2023, the Company held 16,091,988 and 15,103,554 shares as treasury stock, respectively.

Treasury Stock Reissuance

During fiscal 2024, fiscal 2023 and fiscal 2022, the Company also issued 13,981, 17,077 and 13,858 shares out of its treasury stock, respectively, valued at $62.55 per share, on a FIFO basis, to participants under the Company's Employee Stock Purchase Plan.

Accumulated Other Comprehensive Income (“AOCI”)

The components of AOCI, net of tax, are as follows:


	Beginning Balance		Before Reclassifications		Amount Reclassified from AOCI		Ending Balance
March 31, 2024
Pension funded status adjustment	$	(4,423)	$	(5,672)	$	297	$	(9,798)
Net unrealized gain (loss) on derivative instruments	1,411		6,283		(6,939)		755
Foreign currency translation adjustment (1)	(180,462)		(15,346)		—		(195,808)
Accumulated other comprehensive loss	$	(183,474)	$	(14,735)	$	(6,642)	$	(204,851)
March 31, 2023
Pension funded status adjustment	$	(12,637)	$	7,872	$	342	$	(4,423)
Net unrealized gain (loss) on derivative instruments	2,963		(2,453)		901		1,411
Foreign currency translation adjustment (1)	(133,821)		(46,641)		—		(180,462)
Accumulated other comprehensive loss	$	(143,495)	$	(41,222)	$	1,243	$	(183,474)
March 31, 2022
Pension funded status adjustment	$	(20,947)	$	7,374	$	936	$	(12,637)
Net unrealized gain (loss) on derivative instruments	360		10,063		(7,460)		2,963
Foreign currency translation adjustment	(95,296)		(38,525)		—		(133,821)
Accumulated other comprehensive loss	$	(115,883)	$	(21,088)	$	(6,524)	$	(143,495)

(1) Foreign currency translation adjustment for the fiscal year ended March 31, 2024, March 31, 2023, March 31, 2022 and includes a $2,615 loss (net of taxes of $797), $19,491 gain (net of taxes of $4,557) and $228 gain (net of taxes $70), respectively, related to the Company's $300,000 and $150,000 cross-currency fixed interest rate swap contracts.

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2024:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized gain on derivative instruments	$	(9,057)	Cost of goods sold
Tax expense	2,118
Net unrealized gain on derivative instruments, net of tax	$	(6,939)

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(713)	Interest expense
Tax expense	167
Net unrealized gain on derivative instruments, net of tax	$	(546)

Defined benefit pension costs:
Prior service costs and deferrals	$	326	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(29)
Net periodic benefit cost, net of tax	$	297

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2023:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized loss on derivative instruments	$	1,176	Cost of goods sold
Tax benefit	(275)
Net unrealized loss on derivative instruments, net of tax	$	901

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(3,587)	Interest expense
Tax expense	839
Net unrealized gain on derivative instruments, net of tax	$	(2,748)

Defined benefit pension costs:
Prior service costs and deferrals	$	478	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(136)
Net periodic benefit cost, net of tax	$	342

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2022:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized gain on derivative instruments	$	(9,742)	Cost of goods sold
Tax benefit	2,282
Net unrealized gain on derivative instruments, net of tax	$	(7,460)

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(1,181)	Interest expense
Tax expense	276
Net unrealized gain on derivative instruments, net of tax	$	(905)

Defined benefit pension costs:
Prior service costs and deferrals	$	1,212	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(276)
Net periodic benefit cost, net of tax	$	936

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481004/946-505-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

+ Details

Derivative Financial Instruments

12 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

The Company utilizes derivative instruments to reduce its exposure to fluctuations in commodity prices, foreign exchange rates and interest under established procedures and controls. The Company does not enter into derivative contracts for speculative purposes. The Company’s agreements are with creditworthy financial institutions and the Company anticipates performance by counterparties to these contracts and therefore no material loss is expected.

Derivatives in Cash Flow Hedging Relationships

Lead Forward Contracts

The Company enters into lead forward contracts to fix the price for a portion of its lead purchases. Management considers the lead forward contracts to be effective against changes in the cash flows of the underlying lead purchases. The vast majority of such contracts are for a period not extending beyond one year. At March 31, 2024 and 2023, the Company has hedged the price to purchase approximately 53.0 million pounds and 50.0 million pounds of lead, respectively, for a total purchase price of $49,977 and $47,921, respectively.

Foreign Currency Forward Contracts

The Company uses foreign currency forward contracts and options to hedge a portion of the Company’s foreign currency exposures for lead, as well as other foreign currency exposures so that gains and losses on these contracts offset changes in the underlying foreign currency denominated exposures. The vast majority of such contracts are for a period not extending beyond one year. As of March 31, 2024 and 2023, the Company had entered into a total of $46,159 and $45,823, respectively, of such contracts.

Interest Rate Swap Agreements

The Company is exposed to changes in variable interest rates on borrowings under our credit agreement. On a selective basis, from time to time, it enters into interest rate swap agreements to reduce the negative impact that increases in interest rates could have on our outstanding variable rate debt. At March 31, 2024 and 2023 such agreements effectively convert $200,000 of our variable-rate debt to a fixed-rate basis, utilizing the one-month term SOFR, as a floating rate reference. Fluctuations in SOFR and fixed rates affect both our net financial investment position and the amount of cash to be paid or received by us under these agreements.

Derivatives in Net Investment Hedging Relationships

Net Investment Hedges

The Company uses cross currency fixed interest rate swaps to hedge its net investments in foreign operations against future volatility in the exchange rates between the U.S. Dollar and Euro.

On September 29, 2022, the Company terminated its $300,000 cross-currency fixed interest rate swap contracts, originally entered into on December 23, 2021, and received a net settlement of $43,384. The cash proceeds were included in Proceeds from termination of net investment hedges in our Consolidated Statements of Cash Flows.

On September 29, 2022, the Company entered into cross-currency fixed interest rate swap contracts with an aggregate notional amount of $150,000, maturing on December 15, 2027. The cross-currency fixed interest rate swap contracts qualify for hedge accounting as a net investment hedging instrument, which allows for them to be remeasured to foreign currency translation adjustment within AOCI (“Accumulated Other Comprehensive Income”) to offset the translation risk from those investments. Balances in the foreign currency translation adjustment accounts remain until the sale or substantially complete liquidation of the foreign entity, upon which they are recognized as a component of income (expense).

Impact of Hedging Instruments on AOCI

In the coming twelve months, the Company anticipates that $1,784 of pretax gain relating to lead, foreign currency forward contracts, interest rate swaps, and net investment hedges will be reclassified from AOCI as part of cost of goods sold and interest expense. This amount represents the current net unrealized impact of hedging lead, foreign exchange rates and interest rates, which will change as market rates change in the future. This amount will ultimately be realized in the Consolidated Statements of Income as an offset to the corresponding actual changes in lead, foreign exchange rates and lead costs resulting from variable lead cost, foreign exchange and interest rates hedged.

Derivatives not Designated in Hedging Relationships

Foreign Currency Forward Contracts

The Company also enters into foreign currency forward contracts to economically hedge foreign currency fluctuations on intercompany loans and foreign currency denominated receivables and payables. These are not designated as hedging instruments and changes in fair value of these instruments are recorded directly in the Consolidated Statements of Income. As of March 31, 2024 and 2023, the notional amount of these contracts was $69,319 and $102,558, respectively.

Fair Value of Derivative Instruments

March 31, 2024 and 2023


	Derivatives and Hedging Activities Designated as Cash Flow Hedges				Derivatives and Hedging Activities Designated as Net Investment Hedges				Derivatives and Hedging Activities Not Designated as Hedging Instruments
	March 31, 2024		March 31, 2023		March 31, 2024		March 31, 2023		March 31, 2024		March 31, 2023
Prepaid and other current assets:
Lead forward contracts	$	—	$	—	$	—	$	—	$	—	$	—
Foreign currency forward contracts	396		723		—		—		—		200


Other Assets:
Interest rate swaps	2,696		—		—		—		—		—
Total assets	$	3,092	$	723	$	—	$	—	$	—	$	200
Accrued expenses:
Lead forward contracts	$	835	$	89	$	—	$	—	$	—	$	—
Foreign currency forward contracts	—		—		—		—		391		—

Other liabilities:
Interest rate swaps	—		1,162		—		—		—		—
Net investment hedges	—		—		19,167		15,760		—		—
Total liabilities	$	835	$	1,251	$	19,167	$	15,760	$	391	$	—

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2024


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	(455)	Cost of goods sold	$	5,388
Foreign currency forward contracts	1,740		Cost of goods sold	612
Interest Rate Swaps	6,915		Interest expense	3,057
Total	$	8,200		$	9,057


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	(2,695)	Interest expense	$	713
Total	$	(2,695)		$	713


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	(846)
Total		$	(846)

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2023


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	(3,883)	Cost of goods sold	$	(3,765)
Foreign currency forward contracts	1,849		Cost of goods sold	2,589
Interest rate swaps	(1,162)		Interest Expense	—
Total	$	(3,196)		$	(1,176)


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	29,021	Interest expense	$	3,587
Total	$	29,021		$	3,587


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	1,182
Total		$	1,182

The Effect of Derivative Instruments on the Consolidated Statements of Income

For the fiscal year ended March 31, 2022


Derivatives Designated as Cash Flow Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Lead forward contracts	$	12,193	Cost of goods sold	$	8,974
Foreign currency forward contracts	941		Cost of goods sold	768
Total	$	13,134		$	9,742


Derivatives Designated as Net Investment Hedges	Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)		Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Cross currency fixed interest rate swaps	$	1,479	Interest expense	$	1,181
Total	$	1,479		$	1,181


Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivatives	Pretax Gain (Loss)
Foreign currency forward contracts	Other (income) expense, net	$	(157)
Total		$	(157)

Retirement Plans - Change in Projected Benefit Obligations and Change in Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
United States Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at the beginning of the period	$ 14,056	$ 16,205
Service cost	0	0	$ 0
Interest cost	657	582	517
Benefits paid, inclusive of plan expenses	(865)	(843)
Plan curtailments and settlements	0	0
Plan combinations	0	0
Actuarial (gains) losses	(535)	(1,888)
Foreign currency translation adjustment	0	0
Benefit obligation at the end of the period	13,313	14,056	16,205
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the period	13,975	16,166
Actual return on plan assets	2,043	(1,348)
Employer contributions	0	0
Benefits paid, inclusive of plan expenses	(865)	(843)
Plan curtailments and settlements	0	0
Foreign currency translation adjustment	0	0
Fair value of plan assets at the end of the period	15,153	13,975	16,166
Funded status surplus (deficit)	1,840	(81)
International Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at the beginning of the period	51,718	70,833
Service cost	884	918	1,114
Interest cost	2,215	1,715	1,427
Benefits paid, inclusive of plan expenses	(2,353)	(2,052)
Plan curtailments and settlements	0	0
Plan combinations	(1,835)	0
Actuarial (gains) losses	633	(15,995)
Foreign currency translation adjustment	874	(3,701)
Benefit obligation at the end of the period	55,806	51,718	70,833
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the period	40,104	42,067
Actual return on plan assets	(7,717)	(3,722)
Employer contributions	1,655	6,428
Benefits paid, inclusive of plan expenses	(2,353)	(2,052)
Plan curtailments and settlements	0	0
Foreign currency translation adjustment	874	(2,617)
Fair value of plan assets at the end of the period	32,563	40,104	$ 42,067
Funded status surplus (deficit)	$ (23,243)	$ (11,614)

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Reconciliation of Unrecognized Tax Benefits
Balance at beginning of year	$ 3,495	$ 4,770	$ 6,785
Increases related to current year tax positions	(2)
Increases related to current year tax positions		24	21
Increases related to prior year tax positions		(1)
Increases related to prior year tax positions	0		598
Decreases related to prior tax positions	(129)	0	0
Decreases related to prior year tax positions settled	0	(77)	(784)
Lapse of statute of limitations	(519)	(1,221)	(1,850)
Balance at end of year	$ 2,845	$ 3,495	$ 4,770

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Pay vs Performance Disclosure
Net earnings attributable to EnerSys stockholders	$ 269,096	$ 175,810	$ 143,911

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
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-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
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-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
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-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
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-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Leases

12 Months Ended

Mar. 31, 2024

Leases [Abstract]

Leases

The Company leases manufacturing facilities, distribution centers, office space, vehicles and other equipment under non-cancellable leases with initial terms typically ranging from 1 to 16 years. At contract inception, the Company reviews the terms of the arrangement to determine if the contract is or contains a lease. Guidance in Topic 842 is used to evaluate whether the contract has an identified asset; if the Company has the right to obtain substantially all economic benefits from the asset; and if it has the right to direct the use of the underlying asset. When determining if a contract has an identified asset, the Company considers both explicit and implicit assets, and whether the supplier has the right to substitute the asset. When determining if the Company has the right to obtain substantially all economic benefits from the asset, the Company considers the primary outputs of the identified asset throughout the period of use and determines if it receives greater than 90% of those benefits. When determining if it has the right to direct the use of an underlying asset, the Company considers if it has the right to direct how and for what purpose the asset is used throughout the period of use and if it controls the decision-making rights over the asset.

Lease terms may include options to extend or terminate the lease. The Company exercises its judgment to determine the term of those leases when extension or termination options are present and include such options in the calculation of the lease term when it is reasonably certain that the Company will exercise those options.

The Company has elected to include both lease and non-lease components in the determination of lease payments for all asset classes. Payments made to a lessor for items such as taxes, insurance, common area maintenance, or other costs commonly referred to as executory costs, are also included in lease payments if they are fixed. The fixed portion of these payments are included in the calculation of the lease liability, while any variable portion would be recognized as variable lease expenses, when incurred. Variable payments made to third parties for these, or similar costs, such as utilities, are not included in the calculation of lease payments.

Both finance and operating leases are reflected as liabilities on the commencement date of the lease based on the present value of the lease payments to be made over the lease term. As most of the leases do not provide an implicit rate, the Company has exercised judgment in electing the incremental borrowing rate based on the information available when the lease commences to determine the present value of future payments. Right-of-use assets are valued at the initial measurement of the lease liability, plus any initial direct costs or rent prepayments and reduced by any lease incentives and any deferred lease payments.

Operating lease expense is recognized on a straight-line basis over the lease term. Finance lease expense includes depreciation, which is recognized on a straight-line basis over the expected life of the leased asset, and interest expense, which is recognized following an effective interest rate method.

Short term leases with an initial term of 12 months or less are not presented on the balance sheet and expense is recognized as incurred. The current and non-current portion of operating lease liabilities are reflected in accrued expenses and other liabilities, respectively, on the consolidated balance sheets. The right-of use assets relating to operating and finance leases are reflected in other assets and property, plant and equipment, respectively, on the consolidated balance sheets.

The following table presents lease assets and liabilities and their balance sheet classification:


	Classification	As of March 31, 2024		As of March 31, 2023
Operating Leases:
Right-of-use assets	Other assets	$	76,413	$	85,237
Operating lease current liabilities	Accrued expenses	19,280		21,230
Operating lease non-current liabilities	Other liabilities	61,687		66,555
Finance Leases:
Right-of-use assets	Property, plant, and equipment, net	$	878	$	342
Finance lease current liabilities	Current portion of finance leases	237		90
Finance lease non-current liabilities	Finance leases	647		254

The components of lease expense for the fiscal years ended March 31, 2024 and March 31, 2023 were as follows:


	Classification	March 31, 2024		March 31, 2023
Operating Leases:
Operating lease cost	Operating expenses	$	28,030	$	20,232
Variable lease cost	Operating expenses	11,669		9,816
Short term lease cost	Operating expenses	8,078		4,310
Finance Leases:
Depreciation	Operating expenses	$	297	$	95
Interest expense	Interest expense	57		10
Total		$	48,131	$	34,463

The following table presents the weighted average lease term and discount rates for leases as of March 31, 2024 and March 31, 2023:

March 31, 2024

March 31, 2023

Operating Leases:

Weighted average remaining lease term (years)

5.5 years

5.9 years

Weighted average discount rate

5.38%

4.93%

Finance Leases:

Weighted average remaining lease term (years)

3.8 years

3.7 years

Weighted average discount rate

7.4%

6.79%

The following table presents future payments due under leases reconciled to lease liabilities as of March 31, 2024:


	Finance Leases		Operating Leases
Year ended March 31,
2025	$	290	$	22,890
2026	256		20,048
2027	232		16,819
2028	194		13,200
2029	39		7,846
Thereafter	—		13,224
Total undiscounted lease payments	1,012		94,026
Present value discount	128		13,059
Lease liability	$	884	$	80,967

The following table presents supplemental disclosures of cash flow information related to leases for the fiscal years ended March 31, 2024 and March 31, 2023:


	March 31, 2024		March 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	57	$	15
Operating cash flows from operating leases	27,406		27,176
Financing cash flows from finance leases	275		151
Supplemental non-cash information on lease liabilities arising from right-of-use assets:
Right-of-use assets obtained in exchange for new finance lease liabilities	$	811	$	254
Right-of-use assets obtained in exchange for new operating lease liabilities	31,284		24,423

Leases

The following table presents lease assets and liabilities and their balance sheet classification:


	Classification	As of March 31, 2024		As of March 31, 2023
Operating Leases:
Right-of-use assets	Other assets	$	76,413	$	85,237
Operating lease current liabilities	Accrued expenses	19,280		21,230
Operating lease non-current liabilities	Other liabilities	61,687		66,555
Finance Leases:
Right-of-use assets	Property, plant, and equipment, net	$	878	$	342
Finance lease current liabilities	Current portion of finance leases	237		90
Finance lease non-current liabilities	Finance leases	647		254

The components of lease expense for the fiscal years ended March 31, 2024 and March 31, 2023 were as follows:


	Classification	March 31, 2024		March 31, 2023
Operating Leases:
Operating lease cost	Operating expenses	$	28,030	$	20,232
Variable lease cost	Operating expenses	11,669		9,816
Short term lease cost	Operating expenses	8,078		4,310
Finance Leases:
Depreciation	Operating expenses	$	297	$	95
Interest expense	Interest expense	57		10
Total		$	48,131	$	34,463

The following table presents the weighted average lease term and discount rates for leases as of March 31, 2024 and March 31, 2023:

March 31, 2024

March 31, 2023

Operating Leases:

Weighted average remaining lease term (years)

5.5 years

5.9 years

Weighted average discount rate

5.38%

4.93%

Finance Leases:

Weighted average remaining lease term (years)

3.8 years

3.7 years

Weighted average discount rate

7.4%

6.79%

The following table presents future payments due under leases reconciled to lease liabilities as of March 31, 2024:


	Finance Leases		Operating Leases
Year ended March 31,
2025	$	290	$	22,890
2026	256		20,048
2027	232		16,819
2028	194		13,200
2029	39		7,846
Thereafter	—		13,224
Total undiscounted lease payments	1,012		94,026
Present value discount	128		13,059
Lease liability	$	884	$	80,967

The following table presents supplemental disclosures of cash flow information related to leases for the fiscal years ended March 31, 2024 and March 31, 2023:


	March 31, 2024		March 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	57	$	15
Operating cash flows from operating leases	27,406		27,176
Financing cash flows from finance leases	275		151
Supplemental non-cash information on lease liabilities arising from right-of-use assets:
Right-of-use assets obtained in exchange for new finance lease liabilities	$	811	$	254
Right-of-use assets obtained in exchange for new operating lease liabilities	31,284		24,423

Property, Plant, and Equipment - Summary of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	$ 1,335,945	$ 1,268,545
Less accumulated depreciation	(803,495)	(755,262)
Total	532,450	513,283
Land, buildings, and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	313,258	312,294
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	930,858	881,198
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	$ 91,829	$ 75,053

Prepaid and Other Current Assets (Tables)

12 Months Ended

Mar. 31, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule Of Prepaid And Other Current Assets

Prepaid and other current assets consist of the following:


	March 31,
	2024		2023
Prepaid income taxes	$	94,866	$	4,915
Contract assets	55,363		48,616
Prepaid non-income taxes	19,509		17,946
Non-trade receivables	4,124		6,978
Other	53,087		35,146
Total	$	226,949	$	113,601

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 8,107	$ 8,775
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	135,000,000	135,000,000
Common stock, shares issued (in shares)	56,363,924	56,004,613
Common stock, shares outstanding (in shares)	40,271,936	40,901,059

Retirement Plans - Significant Assumptions Used to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.90%	3.70%	3.00%
Expected return on plan assets	5.50%	5.50%	5.50%
Minimum \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.50%	1.50%	0.50%
Expected return on plan assets	4.00%	3.10%	2.70%
Rate of compensation increase	2.30%	1.80%	1.50%
Maximum \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	6.00%	5.40%	2.30%
Expected return on plan assets	4.70%	5.30%	5.30%
Rate of compensation increase	4.50%	5.50%	4.00%

Earnings Per Share - Weighted Average Common Shares Basic and Common Shares Diluted (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net earnings attributable to EnerSys stockholders	$ 269,096	$ 175,810	$ 143,911
Basic (in shares)	40,669,392	40,809,235	42,106,337
Dilutive effect of:
Common shares from exercise and lapse of equity awards, net of shares assumed reacquired (in shares)	702,047	517,520	677,036
Diluted weighted-average number of common shares outstanding (in shares)	41,371,439	41,326,755	42,783,373
Basic earnings per common share attributable to EnerSys stockholders (usd per share)	$ 6.62	$ 4.31	$ 3.42
Diluted earnings per common share attributable to EnerSys stockholders (usd per share)	$ 6.50	$ 4.25	$ 3.36
Anti-dilutive equity awards not included in diluted weighted-average common shares (in shares)	356,893,000	710,678,000	951,057,000

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-7

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(25))
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
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-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-7

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Retirement Plans - Schedule of Level 3 Rollforward (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2024 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Purchases	$ 31,287
Change due to exchange rate changes	155
International Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the period	40,104
Fair value of plan assets at the end of the period	32,563
Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the period	0
Fair value of plan assets at the end of the period	28,497
Other Investments \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the end of the period	28,497
Other Investments \| Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the period	0
Actual return on plan assets, relating to assets still held at the reporting date	(2,945)
Fair value of plan assets at the end of the period	$ 28,497

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details

Accounts Receivable - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts receivable, selling, maximum amount	$ 150,000
Accounts receivable sold to financial institution	710,746	$ 343,013
Accounts receivable sold to financial institution, net proceeds	710,746	192,713
Accounts receivable sold to financial institution, proceeds collected	710,746	193,013
Accounts receivables, collateralized	$ 341,223	$ 274,121
Secured Overnight Financing Rate (SOFR)
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts receivable, fee, basis spread on sold receivable balance	0.85%

Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 3,581,871	$ 3,708,579	$ 3,357,319
Contract with customer, liability, current portion	27,649	34,594
Contract with customer, liability, noncurrent portion	960	1,437
Revenue recognized	20,166	9,779
Unbilled contracts receivable	55,363	48,616
Right to recover product	4,530
Refund liability	7,399
Remaining performance obligation	147,016
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	111,041
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	27,644
Transferred over Time
Disaggregation of Revenue [Line Items]
Net sales	251,820	244,013	193,824
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 420,009	$ 400,798	$ 353,088

Retirement Plans - Summary of Accumulated Benefit Obligation Related to All Defined Pension Plans (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 13,313	$ 14,056
Projected benefit obligation	0	11,671
Fair value of plan assets	0	11,403
United States Plans \| Unfunded defined benefit plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	0	0
Projected benefit obligation	0	0
United States Plans \| Defined benefit plans with an accumulated benefit obligation in excess of the fair value of plan assets
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	0	11,671
Fair value of plan assets	0	11,403
Accumulated benefit obligation	0	11,671
International Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	53,169	49,290
Projected benefit obligation	27,009	25,908
Fair value of plan assets	0	335
International Plans \| Unfunded defined benefit plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	24,930	23,704
Projected benefit obligation	27,009	25,562
International Plans \| Defined benefit plans with an accumulated benefit obligation in excess of the fair value of plan assets
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	27,009	25,562
Fair value of plan assets	0	0
Accumulated benefit obligation	$ 24,930	$ 23,704

Retirement Plans

12 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Retirement Plans

Defined Benefit Plans

The Company sponsors several retirement and pension plans covering eligible salaried and hourly employees. The Company uses a measurement date of March 31 for its pension plans.

Net periodic pension cost for fiscal 2024, 2023 and 2022, includes the following components:


	United States Plans						International Plans
	Fiscal year ended March 31,						Fiscal year ended March 31,
	2024		2023		2022		2024		2023		2022
Service cost	$	—	$	—	$	—	$	884	$	918	$	1,114
Interest cost	657		582		517		2,215		1,715		1,427
Expected return on plan assets	(424)		(455)		(526)		(1,244)		(2,005)		(2,200)
Amortization and deferral	—		—		7		326		478		1,205

Net periodic benefit cost	$	233	$	127	$	(2)	$	2,181	$	1,106	$	1,546


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024		2023
Change in projected benefit obligation
Benefit obligation at the beginning of the period	$	14,056	$	16,205	$	51,718	$	70,833
Service cost	—		—		884		918
Interest cost	657		582		2,215		1,715

Benefits paid, inclusive of plan expenses	(865)		(843)		(2,353)		(2,052)
Plan curtailments and settlements	—		—		—		—
Plan combinations	—		—		1,835		—
Actuarial (gains) losses	(535)		(1,888)		633		(15,995)
Foreign currency translation adjustment	—		—		874		(3,701)
Benefit obligation at the end of the period	$	13,313	$	14,056	$	55,806	$	51,718


Change in plan assets
Fair value of plan assets at the beginning of the period	$	13,975	$	16,166	$	40,104	$	42,067
Actual return on plan assets	2,043		(1,348)		(7,717)		(3,722)
Employer contributions	—		—		1,655		6,428
Benefits paid, inclusive of plan expenses	(865)		(843)		(2,353)		(2,052)
Plan curtailments and settlements	—		—		—		—
Foreign currency translation adjustment	—		—		874		(2,617)
Fair value of plan assets at the end of the period	$	15,153	$	13,975	$	32,563	$	40,104
Funded status surplus (deficit)	$	1,840	$	(81)	$	(23,243)	$	(11,614)


	March 31,
	2024		2023
Amounts recognized in the Consolidated Balance Sheets consist of:
Non-current assets	$	5,606	$	14,147
Accrued expenses	(1,497)		(1,314)
Other liabilities	(25,512)		(24,528)
Funded status deficit	$	(21,403)	$	(11,695)

The following table represents pension components (before tax) and related changes (before tax) recognized in AOCI for the Company’s pension plans for the years ended March 31, 2024, 2023 and 2022:


	Fiscal year ended March 31,
	2024		2023		2022
Amounts recorded in AOCI before taxes:
Prior service cost	$	(85)	$	(128)	$	(174)
Net loss	(9,590)		(2,307)		(14,049)
Net amount recognized	$	(9,675)	$	(2,435)	$	(14,223)

The following table represents changes in plan assets and benefit obligations recognized in AOCI for the Company’s pension plans for the years ended March 31, 2024, 2023 and 2022:


	Fiscal year ended March 31,
	2024		2023		2022
Changes in plan assets and benefit obligations:
New prior service cost	$	—	$	—	$	—
Net loss (gain) arising during the year	7,439		(10,352)		(9,362)
Effect of exchange rates on amounts included in AOCI	127		(957)		(883)
Amounts recognized as a component of net periodic benefit costs:
Amortization of prior service cost	(42)		(41)		(45)
Amortization or settlement recognition of net loss	(284)		(438)		(1,167)
Total recognized in other comprehensive (income) loss	$	7,240	$	(11,788)	$	(11,457)

The amounts included in AOCI as of March 31, 2024 that are expected to be recognized as components of net periodic pension cost (before tax) during the next twelve months are as follows:


Prior service cost	$	(42)
Net loss	(465)
Net amount expected to be recognized	$	(507)


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024		2023
All defined benefit plans:
Accumulated benefit obligation	$	13,313	$	14,056	$	53,169	$	49,290
Unfunded defined benefit plans:
Projected benefit obligation	$	—	$	—	$	27,009	$	25,562
Accumulated benefit obligation	—		—		24,930		23,704
Defined benefit plans with a projected benefit obligation in excess of the fair value of plan assets:
Projected benefit obligation	$	—	$	11,671	$	27,009	$	25,908
Fair value of plan assets	—		11,403		—		335
Defined benefit plans with an accumulated benefit obligation in excess of the fair value of plan assets:
Projected benefit obligation	$	—	$	11,671	$	27,009	$	25,562
Accumulated benefit obligation	—		11,671		24,930		23,704
Fair value of plan assets	—		11,403		—		—

Assumptions

Significant assumptions used to determine the net periodic benefit cost for the U.S. and International plans were as follows:


	United States Plans						International Plans
	Fiscal year ended March 31,						Fiscal year ended March 31,
	2024		2023		2022		2024	2023	2022
Discount rate	4.9	%	3.7	%	3.0	%	3.5%-6.0%	1.5%-5.4%	0.5%-2.3%
Expected return on plan assets	5.5		5.5		5.5		4.0-4.7	3.1-5.3	2.7-5.3
Rate of compensation increase	N/A		N/A		N/A		2.3-4.5	1.8-5.5	1.5-4.0

N/A = not applicable

Significant assumptions used to determine the projected benefit obligations for the U.S. and International plans were as follows:


	United States Plans				International Plans
	March 31,				March 31,
	2024		2023		2024	2023
Discount rate	5.2	%	4.9	%	3.8%-5.3%	3.5%-6%

Rate of compensation increase	N/A		N/A		2.5-4.5	2.3-4.5

N/A = not applicable

The United States plans do not include compensation in the formula for determining the pension benefit as it is based solely on years of service.

The expected long-term rate of return for the Company’s pension plan assets is based upon the target asset allocation and is determined using forward looking assumptions in the context of historical returns and volatilities for each asset class, as well as correlations among asset classes. The Company evaluates the rate of return assumptions for each of its plans on an annual basis.

Pension Plan Investment Strategy

The Company’s investment policy emphasizes a balanced approach to investing in securities of high quality and ready marketability. Investment flexibility is encouraged so as not to exclude opportunities available through a diversified investment strategy.

Equity investments historically were maintained within a target range of 40% - 75% of the total portfolio market value for the U.S. plans and with a target of approximately 65% for international plans. The investment strategy for the U.S. plan has been updated this year to reflect a de-risking exercise that occurred where the U.S. plan moved from approximately 60% equity to all cash and fixed income. The UK plan purchased a buy-in annuity insurance contract is fiscal 2024 and now the UK plan is fully insured. Investments in debt securities include issues of various maturities, and the average quality rating of bonds should be investment grade with a minimum quality rating of “B” at the time of purchase.

The Company periodically reviews the asset allocation of its portfolio. The proportion committed to equities, debt securities and cash and cash equivalents is a function of the values available in each category and risk considerations. The plan’s overall return will be compared to and is expected to meet or exceed established benchmark funds and returns over a three to five year period.

The objectives of the Company’s investment strategies are: (a) the achievement of a reasonable long-term rate of total return consistent with an emphasis on preservation of capital and purchasing power, (b) stability of annual returns through a portfolio that reflects a conservative mix of risk versus return, and (c) reflective of the Company’s willingness to forgo significantly above-average rewards in order to minimize above-average risks. These objectives may not be met each year but should be attained over a reasonable period of time.

The following table represents the Company's pension plan investments measured at fair value as of March 31, 2024 and 2023 and the basis for that measurement:


	March 31, 2024
	United States Plans								International Plans
	Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset category:
Cash and cash equivalents	$	5,473	$	5,473	$	—	$	—	$	3,752	$	3,752	$	—	$	—
Equity securities
US(a)	—		—		—		—		—		—		—		—
International(b)	—		—		—		—		—		—		—		—
Fixed income(c)	9,680		9,680		—		—		314		—		314		—
Other investments(d)	—		—		—		—		28,497		—		—		28,497
Total	$	15,153	$	15,153	$	—	$	—	$	32,563	$	3,752	$	314	$	28,497


	March 31, 2023
	United States Plans								International Plans
	Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value Measurement		Quoted Price In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset category:
Cash and cash equivalents	$	1,714	$	1,714	$	—	$	—	$	7,775	$	7,775	$	—	$	—
Equity securities
US(a)	8,308		8,308		—		—		—		—		—		—
International(b)	—		—		—		—		—		—		—		—
Fixed income(c)	3,953		3,953		—		—		32,329		—		32,329		—
Total	$	13,975	$	13,975	$	—	$	—	$	40,104	$	7,775	$	32,329	$	—

The fair values presented above were determined based on valuation techniques to measure fair value as discussed in Note 1.

(c)Fixed income consists primarily of investment grade bonds from diversified industries.

Level 3 Rollforward

The following presents our Level 3 Rollforward for our defined pension plan assets:


Beginning of year balance as of March 31, 2023	$	—
Actual return on plan assets, relating to assets still held at the reporting date	$	(2,945)
Purchases	$	31,287
Change due to exchange rate changes	$	155
End of year balance as of March 31, 2024	$	28,497

The Company expects to make cash contributions of approximately $1,532 to its pension plans in fiscal 2025.

Estimated future benefit payments under the Company’s pension plans are as follows:



2025	$	3,328
2026	3,312
2027	3,454
2028	4,236
2029	4,616
Years 2030-2034	23,925

Defined Contribution Plan

The Company maintains defined contribution plans primarily in the U.S. and U.K. eligible employees can contribute a portion of their pre-tax and / or after-tax income in accordance with plan guidelines and the Company will make contributions based on the employees’ eligible pay and /or will match a percentage of the employee contributions up to certain limits. Matching contributions charged to expense for the fiscal years ended March 31, 2024, 2023 and 2022 were $22,819, $20,933 and $18,402, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480482/715-20-55-17

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
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-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
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-URI https://asc.fasb.org//715/tableOfContent

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 1
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480126/715-20-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480266/715-60-50-3

+ Details

Fair Value of Financial Instruments

12 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Recurring Fair Value Measurements

The following tables represent the financial assets and (liabilities) measured at fair value on a recurring basis as of March 31, 2024 and March 31, 2023 and the basis for that measurement:


	Total Fair Value Measurement March 31, 2024		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Lead forward contracts	$	(835)	$	—	$	(835)	$	—
Foreign currency forward contracts	5		—		5		—
Interest rate swaps	2,696		—		2,696		—
Net investment hedges	(19,167)		—		(19,167)		—
Total derivatives	$	(17,301)	$	—	$	(17,301)	$	—


	Total Fair Value Measurement March 31, 2023		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Lead forward contracts	$	(89)	$	—	$	(89)	$	—
Foreign currency forward contracts	923		—		923		—
Interest Rate Swaps	(1,162)				(1,162)
Net investment hedges	(15,760)		—		(15,760)		—
Total derivatives	$	(16,088)	$	—	$	(16,088)	$	—

The fair values of lead forward contracts are calculated using observable prices for lead as quoted on the London Metal Exchange (“LME”) and, therefore, were classified as Level 2 within the fair value hierarchy as described in Note 1, Summary of Significant Accounting Policies.

The fair values for foreign currency forward contracts, interest rate swaps, and net investment hedges are based upon current quoted market prices and are classified as Level 2 based on the nature of the underlying market in which these derivatives are traded.

The fair value of interest rate swap agreements are based on observable prices as quoted for receiving the variable one month term SOFR and paying fixed interest rates and, therefore, were classified as Level 2.

Financial Instruments

The fair values of the Company’s cash and cash equivalents approximate carrying value due to their short maturities.

The fair value of the Company’s short-term debt and borrowings under the Second Amended Credit Facility (as defined in Note 10), approximate their respective carrying value, as they are variable rate debt and the terms are comparable to market terms as of the balance sheet dates and are classified as Level 2.

The fair value of the Company's 2032 Notes and 2027 Notes, (collectively, the “Senior Notes”) represent the trading values based upon quoted market prices and are classified as Level 2. The 2032 Notes were trading at approximately 100% of face value on March 31, 2024. The 2027 Notes were trading at approximately 94% and 92% of face value on March 31, 2024 and March 31, 2023, respectively.

The carrying amounts and estimated fair values of the Company’s derivatives and Senior Notes at March 31, 2024 and 2023 were as follows:


	March 31, 2024				March 31, 2023
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Derivatives(1)	$	—	$	—	$	—	$	—
Financial liabilities:
Senior Notes (2)	$	600,000	$	582,750	$	300,000	$	276,000
Derivatives(1)	(17,301)		(17,301)		(16,088)		(16,088)

(1)Represents lead, foreign currency forward contracts, interest rate swaps, and net investment hedges (see Note 13 for asset and liability positions of the lead, foreign currency forward contracts and net investment hedges at March 31, 2024 and March 31, 2023).

(2)The fair value amount of the Senior Notes at March 31, 2024 and March 31, 2023 represent the trading value of the instruments.

Non-recurring fair value measurements

The valuation of goodwill and other intangible assets is based on information and assumptions available to the Company at the time of acquisition, using income and market approaches to determine fair value. The Company tests goodwill and other intangible assets annually for impairment, or when indications of potential impairment exist (see Note 1).

Goodwill is tested for impairment by determining the fair value of the Company’s reporting units. The unobservable inputs used to measure the fair value of the reporting units include projected growth rates, profitability, and the risk factor premium added to the discount rate. The remeasurement of the reporting unit fair value is classified as a Level 3 fair value assessment due to the significance of unobservable inputs developed using company-specific information.

The inputs used to measure the fair value of other intangible assets were largely unobservable and accordingly were also classified as Level 3. The fair value of trademarks is based on an estimate of the royalties saved that would have been paid to a third party had the Company not owned the trademark. The fair value of other indefinite-lived intangibles was estimated using the income approach, based on cash flow projections of revenue growth rates, taking into consideration industry and market conditions.

On November 8, 2023, the Company's Board of Directors approved a plan to stop production and operations of residential renewable energy products, which include our OutBack and Mojave brands. Management determined that residential renewable energy products no longer fit with the Company’s core strategy and resources will be better allocated toward commercial energy solutions for enterprise customers. As a result the Company's indefinite-lived trademark, which were acquired through acquisition, was recorded at fair value on a non-recurring basis at $880 and the remeasurement resulted in an impairment of $6,020 in the third quarter of fiscal 2024. In determining the fair value of these assets, the Company used a royalty rate of 1.5% based on comparable market rates and used discount rate of 24.5%. The inputs used to measure the fair value were largely unobservable and accordingly were classified as Level 3.

In the fourth quarter of fiscal 2024, the Company finalized a strategy to stop marketing certain brands including the Purcell products. These indefinite-lived trademarks, which were acquired through acquisitions, were recorded at fair value on a non-recurring basis at $7,599 and the remeasurement resulted in the full impairment charge of the carrying value.

In connection with the annual impairment testing conducted as of January 2, 2023, two of the Company's indefinite-lived trademarks, which were acquired through acquisitions, were recorded at fair value on a non-recurring basis at $6,900 and the remeasurements resulted in an impairment of $480. In determining the fair value of these assets, the Company used a royalty rate of 1.5% based on comparable market rates and used discount rate of 24.0%. In fiscal 2022, the Company recorded an impairment relating to additional two trademarks, which were recorded at a fair value on a non-recurring basis of $980 and the remeasurement resulted in an impairment of $1,178. In determining the fair value of these assets, the Company used a royalty rate of 1.25% based on comparable market rates and used a discount rate of 13.0% and 14.5%.

These impairment charges relating to goodwill and indefinite-lived trademarks are included under the captions Impairment of goodwill and Impairment of indefinite-lived intangibles in the Consolidated Statements of Income.

Ooltewah

On June 29, 2022, the Company committed to a plan to close its facility in Ooltewah, Tennessee, which focused on manufacturing flooded motive power batteries for electric forklifts. Management determined that future demand for traditional motive power flooded cells will decrease as customers transition to maintenance free product solutions in lithium and Thin Plate Pure Lead (TPPL). As a result, the Company concluded that the carrying value of the asset group was not recoverable and recorded during the first quarter of fiscal 2023 a write-off of $7,300 of the fixed assets, for which there is expected to be no salvageable value. The valuation technique used to measure the fair value of fixed assets was a combination of the income and market approaches. The inputs used to measure the fair value of these fixed assets under the income approach were largely unobservable and accordingly were classified as Level 3

Russia

Vijayawada, India

During fiscal 2021, the Company committed to a plan to close its facility in Vijayawada, India to align with its strategic vision for the new line of business structure and footprint. As a result of this decision, in fiscal 2022, the Company reclassified property, plant and equipment with a carrying value of $4,573 to assets held for sale on the Consolidated Balance Sheet and recognized an impairment loss of $2,973 under the caption Loss on assets held for sale on its consolidated statement of income, by recording the carrying value of these assets to their estimated fair value of $1,600, based on a non-recurring basis. The fair value was based on the expected proceeds, less costs to sell.

Hagen, Germany

In fiscal 2021, the Company committed to a plan to substantially close all of its facility in Hagen, Germany, which produces flooded motive power batteries for forklifts. Management determined that future demand for the motive power batteries produced at this facility was not sufficient, given the conversion from flooded to maintenance free batteries by customers, the existing number of competitors in the market, as well as the near term decline in demand and increased uncertainty from the pandemic. As a result, the Company concluded that the carrying value of the asset group is not recoverable and recorded a write-off of $3,975 of the fixed assets to their estimated fair value of $14,456, which was recognized in the third quarter of fiscal 2021. The valuation technique used to measure the fair value of fixed assets was a combination of the income and market approaches. The inputs used to measure the fair value of these fixed assets under the income approach were largely unobservable and accordingly were classified as Level 3.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Business Segments - Schedule of Financial Information by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 3,581,871	$ 3,708,579	$ 3,357,319
Operating earnings	351,570	278,361	206,251
Inventory step up to fair value relating to acquisitions	(20,173)	(681)	(2,604)
Restructuring and other exit charges	(28,103)	(16,439)	(18,756)
Impairment of indefinite-lived intangibles	(13,619)	(480)	(1,178)
Loss on assets held for sale - Motive Power	0	0	(2,973)
Other expenses	(589,599)	(544,858)	(520,810)
Capital Expenditures	86,437	88,772	74,041
Depreciation and amortization	92,021	91,153	95,878
Property, plant, and equipment, net	532,450	513,283
Energy Systems
Segment Reporting Information [Line Items]
Net sales	1,590,023	1,738,195	1,536,673
Legal proceedings charge	(3,705)	0	0
Operating earnings	86,955	90,400	48,875
Inventory adjustment relating to exit activities	(17,075)	211	(186)
Restructuring and other exit charges	(8,840)	(1,441)	(2,713)
Impairment of indefinite-lived intangibles	(13,619)	(100)	(501)
Capital Expenditures	33,626	37,249	33,614
Depreciation and amortization	49,469	52,034	54,580
Property, plant, and equipment, net	189,519	199,414
Energy Systems \| Americas
Segment Reporting Information [Line Items]
Other expenses	(3,740)	(712)	(1,628)
Depreciation and amortization	24,503	27,383	29,277
Motive Power
Segment Reporting Information [Line Items]
Net sales	1,456,181	1,451,244	1,361,254
Operating earnings	214,650	179,972	172,396
Inventory adjustment relating to exit activities	0	(892)	(2,418)
Restructuring and other exit charges	(11,697)	(12,864)	(17,059)
Impairment of indefinite-lived intangibles	0	0	(677)
Loss on assets held for sale - Motive Power	0	0	(2,973)
Capital Expenditures	17,115	16,373	13,887
Depreciation and amortization	23,690	22,404	24,918
Property, plant, and equipment, net	145,395	142,301
Motive Power \| EMEA
Segment Reporting Information [Line Items]
Other expenses	(1,032)	(627)	(1,040)
Depreciation and amortization	683	441	1,055
Specialty
Segment Reporting Information [Line Items]
Net sales	535,667	519,140	459,392
Operating earnings	31,366	40,487	46,730
Inventory step up to fair value relating to acquisitions	(3,098)	0	0
Restructuring and other exit charges	(7,566)	(2,134)	1,016
Impairment of indefinite-lived intangibles	0	(380)	0
Capital Expenditures	35,596	35,150	26,540
Depreciation and amortization	18,762	16,715	16,380
Property, plant, and equipment, net	197,368	171,568
Specialty \| Asia
Segment Reporting Information [Line Items]
Other expenses	(295)	(95)	(277)
Depreciation and amortization	2,808	2,923	2,962
Other
Segment Reporting Information [Line Items]
Operating earnings	(117,260)	(17,283)	0
Capital Expenditures	100	0	0
Depreciation and amortization	100	0	$ 0
Property, plant, and equipment, net	$ 168	$ 0

Property, Plant, and Equipment (Tables)

12 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Summary Of Property, Plant, And Equipment

Property, plant, and equipment consist of:


	March 31,
	2024		2023
Land, buildings, and improvements	$	313,258	$	312,294
Machinery and equipment	930,858		881,198
Construction in progress	91,829		75,053
	1,335,945		1,268,545
Less accumulated depreciation	(803,495)		(755,262)
Total	$	532,450	$	513,283

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Description of Business

Principles of Consolidation

Foreign Currency Translation

Revenue Recognition

The Company's primary performance obligation to its customers is the delivery of finished goods and products, pursuant to

purchase orders. Control of the products sold typically transfers to its customers at the point in time when the goods are shipped

as this is also when title generally passes to its customers under the terms and conditions of the customer arrangements.

The Company's typical payment terms are 30 days and sales arrangements do not contain any significant financing component for its customers.

The Company uses historic customer product return data as a basis of estimation for customer returns and records the reduction of sales at the time revenue is recognized.

The Company applies a policy election to exclude transaction taxes collected from customers from sales when the tax is both imposed on and concurrent with a specific revenue-producing transaction.

Warranties

Cash and Cash Equivalents

Cash and cash equivalents include all highly liquid investments with an original maturity of three months or less when purchased.

Concentration of Credit Risk

Accounts Receivable

Inventories

Property, Plant, and Equipment

Maintenance and repairs are expensed as incurred. Interest on capital projects is capitalized during the construction period.

Business Combinations

Goodwill and Other Intangible Assets

Impairment of Long-Lived Assets

Environmental Expenditures

Derivative Financial Instruments

sensitivity analyses and frequent portfolio reporting, including open positions, determinations of fair value and other risk management metrics.

The Company does not have any credit-related contingent features associated with its derivative instruments.

Fair Value of Financial Instruments

The Company groups its recurring, non-recurring and disclosure-only fair value measurements into the following levels when making fair value measurement disclosures:


Level 1						Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2						Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data.

Level 3						Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable.

Income Taxes

The Company recognizes tax related interest and penalties in income tax expense in its Consolidated Statement of Income.

Deferred Financing Fees

Stock-Based Compensation Plans

Market condition-based awards

The Company grants market condition-based awards and performance condition-based awards.

Restricted Stock Units

Stock Options

Forfeitures

Forfeitures of share-based awards are estimated at the time of grant and revised, if necessary, in subsequent periods if actual

forfeitures differ from those estimates.

Earnings Per Share

Segment Reporting

The Company's chief operating decision maker, or CODM (the Company's Chief Executive Officer), reviews financial information for purposes of assessing business performance and allocating resources, by focusing on the lines of business on a global basis. The Company excludes certain items that are not included in the segment performance as these are managed and viewed on a consolidated basis. The Company identifies the following as its four operating segments, based on lines of business:

•Motive Power - power for electric industrial forklifts used in manufacturing, warehousing and other material handling

applications, AGVs, as well as mining equipment, diesel locomotive starting and other rail equipment.

submarines, ships and other tactical vehicles, as well as medical devices and equipment; and

•New Ventures - energy storage and management systems for demand charge reduction, utility back-up power, and dynamic fast charging for electric vehicles

The operating segments of Energy Systems, Motive Power, and Specialty also represent the Company's reportable segments under ASC 280, Segment Reporting.

Recently Issued Accounting Standards not yet adopted

Use of Estimates

Revenue Recognition	12 Months Ended
Revenue Recognition	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company's revenues by reportable segments are presented in Note 23. A small portion of the Company's customer arrangements oblige the Company to create customized products for its customers that require the bundling of both products and services into a single performance obligation because the individual products and services that are required to fulfill the customer requirements do not meet the definition for a distinct performance obligation. These customized products generally have no alternative use to the Company and the terms and conditions of these arrangements give the Company the enforceable right to payment for performance completed to date, including a reasonable profit margin. For these arrangements, control transfers over time and the Company measures progress towards completion by selecting the input or output method that best depicts the transfer of control of the underlying goods and services to the customer for each respective arrangement. Methods used by the Company to measure progress toward completion include labor hours, costs incurred and units of production. Revenues recognized over time for fiscal 2024, 2023 and 2022 amounted to $251,820, $244,013 and $193,824, respectively. On March 31, 2024, the aggregate transaction price allocated to unsatisfied (or partially unsatisfied) performance obligations was approximately $147,016, of which, the Company estimates that approximately $111,041 will be recognized as revenue in fiscal 2025, $27,644 in fiscal 2026, and $8,287 in fiscal 2027, and $24 thereafter. Any payments that are received from a customer in advance, prior to the satisfaction of a related performance obligation and billings in excess of revenue recognized, are deferred and treated as a contract liability. Advance payments and billings in excess of revenue recognized are classified as current or non-current based on the timing of when recognition of revenue is expected. As of March 31, 2024, the current and non-current portion of contract liabilities were $27,649 and $960, respectively. As of March 31, 2023, the current and non-current portion of contract liabilities were $34,594 and $1,437, respectively. Revenues recognized during fiscal 2024 and fiscal 2023, that were included in the contract liability at the beginning of the year, amounted to 20,166 and $9,779, respectively. Amounts representing work completed and not billed to customers represent contract assets and were $55,363 and $48,616 as of March 31, 2024 and March 31, 2023, respectively. The Company uses historic customer product return data as a basis of estimation for customer returns and records the reduction of sales at the time revenue is recognized. At March 31, 2024, the right of return asset related to the value of inventory anticipated to be returned from customers was $4,530 and refund liability representing amounts estimated to be refunded to customers was $7,399.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-9

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-10

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-15

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-13

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org//606/tableOfContent

+ Details

Warranty

12 Months Ended

Mar. 31, 2024

Guarantees [Abstract]

Warranty

The Company provides for estimated product warranty expenses when products are sold, with related liabilities included within accrued expenses and other liabilities. As warranty estimates are forecasts that are based on the best available information, primarily historical claims experience, costs of claims may ultimately differ from amounts provided. An analysis of changes in the liability for product warranties is as follows:


	Fiscal year ended March 31,
	2024		2023		2022
Balance at beginning of year	$	56,630	$	54,978	$	58,962
Current year provisions	34,110		29,132		17,645
Costs incurred	(30,160)		(25,251)		(20,648)

Foreign currency translation adjustment	239		(2,229)		(981)
Balance at end of year	$	60,819	$	56,630	$	54,978

Other (Income) Expense, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Other Income and Expenses [Abstract]
Foreign exchange transaction (gains) losses	$ (6,053)	$ 671	$ (7,169)
Non-service components of pension expense	1,530	315	430
Cost of Funds Asset Securitization	8,776	2,314	0
Other	5,178	4,893	1,274
Total	$ 9,431	$ 8,193	$ (5,465)

Derivative Financial Instruments - Additional Information (Detail) $ in Thousands, lb in Millions		12 Months Ended
	Sep. 29, 2022 USD ($)	Mar. 31, 2024 USD ($) lb	Mar. 31, 2023 USD ($) lb	Mar. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items]
Payments for (proceeds from) other investing activities	$ 43,384	$ 0	$ 43,384	$ 0
Cost of Goods Sold and Interest Expense
Derivatives, Fair Value [Line Items]
Derivative gain (loss) to be recorded in income within 12 months, before tax		1,784
Lead forward contracts
Derivatives, Fair Value [Line Items]
Total purchase price of derivative		49,977	$ 47,921
Designated as Hedging Instrument \| Cross currency fixed interest rate swaps
Derivatives, Fair Value [Line Items]
Notional amount	300,000	300
Designated as Hedging Instrument \| Cross Currency Fixed Interest Rate Contract
Derivatives, Fair Value [Line Items]
Notional amount	$ 150,000	150
Designated as Hedging Instrument \| Interest Rate Swap, Fixed-Rate Basis
Derivatives, Fair Value [Line Items]
Notional amount		$ 200,000
Designated as Hedging Instrument \| Lead forward contracts
Derivatives, Fair Value [Line Items]
Hedge forward contracts, maturity		1 year
Derivative, nonmonetary notional amount, mass \| lb		53.0	50.0
Designated as Hedging Instrument \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative, term (not extending beyond)		1 year
Notional amount		$ 46,159	$ 45,823
Derivatives Not Designated as Hedging Instruments \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional amount		$ 69,319	$ 102,558

Retirement Plans - Significant Assumptions Used to Determine Projected Benefit Obligations (Detail)	Mar. 31, 2024	Mar. 31, 2023
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.20%	4.90%
International Plans \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.80%	3.50%
Rate of compensation increase	2.50%	2.30%
International Plans \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.30%	6.00%
Rate of compensation increase	4.50%	4.50%

Debt

12 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Debt

The following summarizes the Company’s long-term debt as of March 31, 2024 and March 31, 2023:


	2024				2023
	Principal		Unamortized Issuance Costs		Principal		Unamortized Issuance Costs
Senior Notes	$	600,000	$	6,064	$	300,000	$	2,705
Fourth Amended Credit Facility, due 2026	210,000		1,971		748,413		3,719
	$	810,000	$	8,035	$	1,048,413	$	6,424
Less: Unamortized issuance costs	8,035				6,424

Long-term debt, net of unamortized issuance costs	$	801,965			$	1,041,989

The Company's Senior Notes comprise the following:

4.375% Senior Notes due 2027

On December 11, 2019, the Company issued $300,000 in aggregate principal amount of its 4.375% Senior Notes due December 15, 2027 (the “2027 Notes”). Proceeds from this offering, net of debt issuance costs were $296,250 and were utilized to pay down the Amended 2017 Revolver (defined below). The 2027 Notes bear interest at a rate of 4.375% per annum accruing from

December 11, 2019. Interest is payable semiannually in arrears on June 15 and December 15 of each year, commencing on June 15, 2020. The 2027 Notes mature on December 15, 2027, unless earlier redeemed or repurchased in full and are unsecured and unsubordinated obligations of the Company. They are fully and unconditionally guaranteed, jointly and severally, by certain of its subsidiaries that are guarantors under the Fourth Amended Credit Facility (defined below). These guarantees are unsecured and unsubordinated obligations of such guarantors.

The Company may redeem, prior to September 15, 2027, all or a portion of the 2027 Notes at a price equal to 100% of the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid interest and a “make whole” premium to, but excluding, the redemption date. The Company may redeem, on or after September 15, 2027, all or a portion of the 2027 Notes at a price equal to 100% of the principal amount of the 2027 Notes, plus accrued and unpaid interest to, but excluding, the redemption date. If a change of control triggering event occurs, the Company will be required to offer to repurchase the 2027 Notes at a price in cash equal to 101% of the aggregate principal amount of the 2027 Notes, plus accrued and unpaid interest to, but excluding, the date of repurchase. The 2027 Notes were rank pari passu with the 2023 Notes (defined below) prior to their redemption.

6.625% Senior Notes due 2032

On January 11, 2024, the Company issued $300,000 in aggregate principal amount of its 6.625% Senior Notes due January 15, 2032 (the “2032 Notes”). Proceeds from this offering, net of debt issuance costs were $297,000 and were utilized to pay down the Fourth Amended Credit Facility. The 2032 Notes bear interest at a rate of 6.625% per annum accruing from January 11, 2024. Interest is payable semiannually in arrears on January 15 and July 15 of each year, commencing on July 15, 2024. The 2032 Notes mature on January 15, 2032, unless earlier redeemed or repurchased in full and are unsecured and unsubordinated obligations of the Company. They are fully and unconditionally guaranteed, jointly and severally, by certain of its subsidiaries that are guarantors under the Fourth Amended Credit Facility (defined below). These guarantees are unsecured and unsubordinated obligations of such guarantors.

The Company may redeem, prior to January 15, 2027, all or a portion of the 2032 Notes at a price equal to 100% of the aggregate principal amount of the 2032 Notes to be redeemed, plus accrued and unpaid interest and a “make whole” premium to, but excluding, the redemption date. The Company may redeem, on or after January 15, 2027, all or a portion of the 2032 Notes at a price equal to 100% of the principal amount of the 2032 Notes, plus accrued and unpaid interest and a redemption premium to, but excluding, the redemption date. The Company may, in compliance with certain conditions, on any one or more occasions redeem up to 40% of the original aggregate principal amount of the 2032 Notes, with the net cash proceeds of one or more equity offerings at a price equal to 106.625% of the aggregate principal amount of the 2032 Notes, plus accrued and unpaid interest to, but excluding, the redemption date. If a change of control triggering event occurs, the Company will be required to offer to repurchase the 2032 Notes at a price in cash equal to 101% of the aggregate principal amount of the 2032 Notes, plus accrued and unpaid interest to, but excluding, the date of repurchase.

2017 Credit Facility and Subsequent Amendments

In fiscal 2018, the Company entered into a credit facility (the “2017 Credit Facility”). The 2017 Credit Facility scheduled to mature on September 30, 2022, initially comprised a $600,000 senior secured revolving credit facility (“2017 Revolver”) and a $150,000 senior secured term loan (“2017 Term Loan”). The Company utilized the borrowings from the 2017 Credit Facility to repay its pre-existing credit facility.

In fiscal 2019, the Company amended the 2017 Credit Facility (as amended, the “Amended Credit Facility”) to fund the Alpha acquisition. The Amended Credit Facility consisted of $449,105 senior secured term loans (the “Amended Term Loan”), including a CAD 133,050 ($99,105) senior secured term loan and a $700,000 senior secured revolving credit facility (the “Amended Revolver”). The amendment resulted in an increase of the 2017 Term Loan and the 2017 Revolver by $299,105 and $100,000, respectively.

During the second quarter of fiscal 2022, the Company entered into a second amendment to the 2017 Credit Facility (as amended, the “Second Amended Credit Facility”). The Second Amended Credit Facility, scheduled to mature on September 30, 2026, consists of a $130,000 senior secured term loan (the “Second Amended Term Loan”), a CAD 106,440 ($84,229) senior secured term loan and an $850,000 senior secured revolving credit facility (the “Second Amended Revolver”). The second amendment resulted in a decrease of the Amended Term Loan by $150,000 and an increase of the Amended Revolver by $150,000.

During the second quarter of fiscal 2023, the Company entered into a third amendment to the 2017 Credit Facility (as amended, the “Third Amended Credit Facility”). The Third Amended Credit Facility provides a new incremental delayed-draw senior

secured term loan up to $300,000 (the “Third Amended Term Loan”), which shall be available to draw at any time until March 15, 2023. Once drawn, the funds will mature on September 30, 2026, the same as the Company's Second Amended Term loan and Second Amended Revolver. In connection with the agreement, the Company incurred $1,161 in third party administrative and legal fees recognized in interest expense and capitalized $1,096 in charges from existing lenders as a deferred asset. During the fourth quarter of fiscal 2023, the Company drew $300,000 in the form of the Third Amended Term Loan. Additionally, the Company derecognized the capitalized deferred asset and recognized the $1,096 as a deferred financing costs.

During the fourth quarter of fiscal 2023, the Company entered into a fourth amendment to the 2017 Credit Facility (as amended, the “Fourth Amended Credit Facility”). The Fourth Amended Credit Facility replaces the London Interbank Offered Rate (“LIBOR”) with the Secured Overnight Financing Rate (“SOFR”) in the calculation of interest for both the Second Amended Revolver and the Second Amended Term Loan.

In the fourth quarter of fiscal year 2024, we received proceeds from the issuance of the 2032 Senior Notes and paid down $86,488 and $188,750 towards the Second and Third Amended Term loans and wrote off $753 in deferred finance costs.

Subsequent to the fourth amendment, the quarterly installments payable on the Second Amended Term Loan are $2,607 beginning December 31, 2022, $3,911 beginning December 31, 2024 and $5,215 beginning December 31, 2025 with a final payment of $156,448 on September 30, 2026. The Fourth Amended Credit Facility may be increased by an aggregate amount of $350,000 in revolving commitments and /or one or more new tranches of term loans, under certain conditions. Both the Second Amended Revolver and the Second Amended Term Loan bear interest, at the Company's option, at a rate per annum equal to either (i) the SOFR or Canadian Dollar Offered Rate (“CDOR”) plus (i) Term SOFR plus between 1.125% and 2.25% (currently 1.125% and based on the Company's consolidated net leverage ratio) or (ii) the U.S. Dollar Base Rate (which equals, for any day a fluctuating rate per annum equal to the highest of (a) the Federal Funds Effective Rate plus 0.50%, (b) Bank of America “Prime Rate” and (c) the Eurocurrency Base Rate plus 1%; provided that, if the Base Rate shall be less than zero, such rate shall be deemed zero) (iii) the CDOR Base Rate equal to the higher of (a) Bank of America “Prime Rate” and (b) average 30-day CDOR rate plus 0.50%.

The quarterly installments payable on the Third Amended Term Loan are $3,750 beginning June 30, 2023, $5,625 beginning December 31, 2024 and $7,500 beginning December 31, 2025 with a final payment of $232,500 on September 30, 2026. The Third Amended Term Loan bears interest, at the Company's option, at a rate per annum equal to either (i) the Secured Overnight Financing Rate (“SOFR”) plus 10 basis points plus (i) Term SOFR plus between 1.375% and 2.50% (currently 1.375% and based on the Company's consolidated net leverage ratio) or (ii) the U.S. Dollar Base Rate plus between 0.375% and 1.50%, which equals, for any day a fluctuating rate per annum equal to the highest of (a) the Federal Funds Effective Rate plus 0.50%, (b) Bank of America “Prime Rate” and (c) the Term SOFR plus 1%; provided that, if the Base Rate shall be less than zero, such rate shall be deemed zero). Until the funds were drawn on March 13, 2023, the Company paid a commitment fee of 0.175% to 0.35% at a rate per annum on the unused portion.

Obligations under the Fourth Amended Credit Facility are secured by substantially all of the Company’s existing and future acquired assets, including substantially all of the capital stock of the Company’s United States subsidiaries that are guarantors under the Second Amended Credit Facility and up to 65% of the capital stock of certain of the Company’s foreign subsidiaries that are owned by the Company’s United States subsidiaries.

The Fourth Amended Credit Facility allows for up to two temporary increases in the maximum leverage ratio to 4.50x from 4.00x to 4.25x for a four quarter period following an acquisition larger than $250,000. Effective with the Third Amended Credit Facility, the maximum leverage ratio increased from 3.50x to 4.25x effective to the last day of the second quarter of fiscal year 2024 and decreasing subsequently to 4.00x.

As of March 31, 2024, the Company had $110,000 under the Second Amended Term Loan and $100,000 outstanding under the Third Amended Term Loan.

Interest Rates on Long Term Debt

The weighted average interest rate on the long term debt at March 31, 2024 and March 31, 2023, was 5.2% and 4.6%, respectively.

Interest Paid

The Company paid in cash, $48,080, $58,368 and $37,776, net of interest received, for interest during the fiscal years ended March 31, 2024, 2023 and 2022, respectively.

Covenants

The Company’s financing agreements contain various covenants, which, absent prepayment in full of the indebtedness and other obligations, or the receipt of waivers, would limit the Company’s ability to conduct certain specified business transactions including incurring debt, mergers, consolidations or similar transactions, buying or selling assets out of the ordinary course of business, engaging in sale and leaseback transactions, paying dividends and certain other actions. The Company is in compliance with all such covenants.

Short-Term Debt

As of March 31, 2024 and 2023, the Company had $30,444 and $30,642, respectively, of short-term borrowings. The weighted-average interest rate on these borrowings was approximately 6.7% and 7.0%, respectively, for fiscal years ended March 31, 2024 and 2023.

Letters of Credit

As of March 31, 2024 and 2023, the Company had $3,919 and $3,565, respectively, of standby letters of credit.

Debt Issuance Costs

In fiscal 2024, the Company capitalized $4,061 in debt issuance costs in connection with the issuance of the Senior Notes. We also wrote off $753 in deferred finance costs relating to the Second and Third Amended Term Loans. In fiscal 2023, the Company capitalized $1,122 in debt issuance costs in connection with the Third and Fourth Amended Credit Facilities. Amortization expense, relating to debt issuance costs, included in interest expense was $1,697, $1,964, and $2,107 for the fiscal years ended March 31, 2024, 2023 and 2022, respectively. Debt issuance costs, net of accumulated amortization, totaled $8,035 and $6,424 as of March 31, 2024 and 2023, respectively.

Available Lines of Credit

As of March 31, 2024 and 2023, the Company had available and undrawn, under all its lines of credit, $938,334 and $693,444, respectively, including $90,866 and $90,839, respectively, of uncommitted lines of credit as of March 31, 2024 and March 31, 2023.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//470/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Retirement Plans - Summary of Recognized Components of Net Periodic Pension Cost Included in Accumulated Other Comprehensive Income (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
Retirement Benefits [Abstract]
Prior service cost	$ (42)
Net loss	(465)
Net amount expected to be recognized	$ (507)

Audit Information	12 Months Ended
Audit Information	Mar. 31, 2024
Audit Information [Abstract]
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Philadelphia, Pennsylvania

Income Taxes - Reconciliation of Income Taxes at Statutory Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
United States statutory income tax expense	$ 61,358	$ 44,233	$ 36,527
State income taxes, net of federal effect	(995)	1,714	1,724
Nondeductible expenses and other	3,833	6,028	1,217
Net effect of GILTI, FDII, BEAT	3,313	2,457	5,405
Effect of foreign operations	(17,475)	(12,978)	(14,192)
Valuation allowance	6,849	2,068	2,951
Research and Development Credit	(5,158)	(5,063)	(3,604)
IRA Impact	(28,636)	(3,630)	0
Total income tax expense	$ 23,089	$ 34,829	$ 30,028

Other Liabilities

12 Months Ended

Mar. 31, 2024

Other Liabilities Disclosure [Abstract]

Other Liabilities

Other liabilities consist of the following:


	March 31,
	2024		2023
Operating lease liabilities	$	61,687	$	66,555
Warranty	34,515		32,404
Pension	25,512		24,528
Long-term interest rate swaps	19,167		15,760
Liability for uncertain tax positions	3,300		3,930
Contract liabilities	959		1,437
Tax Act - Transition Tax	—		34,715
Other	6,742		23,613
Total	$	151,882	$	202,942

Leases - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$ 57	$ 15
Operating cash flows from operating leases	27,406	27,176
Financing cash flows from finance leases	275	151
Supplemental non-cash information on lease liabilities arising from right-of-use assets:
Right-of-use assets obtained in exchange for new finance lease liabilities	811	254
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 31,284	$ 24,423

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Net sales	$ 3,581,871	$ 3,708,579	$ 3,357,319
Inventory adjustment relating to exit activities	20,173	681	2,604
Gross profit	982,891	840,138	749,968
Operating expenses	589,599	544,858	520,810
Restructuring and other exit charges	28,103	16,439	18,756
Impairment of indefinite-lived intangibles	13,619	480	1,178
Loss on assets held for sale	0	0	2,973
Operating earnings	351,570	278,361	206,251
Interest expense	49,954	59,529	37,777
Other (income) expense, net	9,431	8,193	(5,465)
Earnings before income taxes	292,185	210,639	173,939
Income tax expense	23,089	34,829	30,028
Net earnings attributable to EnerSys stockholders	$ 269,096	$ 175,810	$ 143,911
Net earnings per common share attributable to EnerSys stockholders:
Basic (usd per share)	$ 6.62	$ 4.31	$ 3.42
Diluted (usd per share)	6.50	4.25	3.36
Dividends per common share (usd per share)	$ 0.85	$ 0.70	$ 0.70
Weighted-average number of common shares outstanding:
Basic (in shares)	40,669,392	40,809,235	42,106,337
Diluted (in shares)	41,371,439	41,326,755	42,783,373
Product
Net sales	$ 3,161,862	$ 3,307,781	$ 3,004,231
Cost of goods sold	2,248,859	2,597,296	2,360,150
Service
Net sales	420,009	400,798	353,088
Cost of goods sold	$ 329,948	$ 270,464	$ 244,597

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Mar. 31, 2024	May 17, 2024	Oct. 01, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Mar. 31, 2024
Current Fiscal Year End Date	--03-31
Document Transition Report	false
Entity File Number	001-32253
Entity Registrant Name	ENERSYS
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-3058564
Entity Address, Address Line One	2366 Bernville Road
Entity Address, City or Town	Reading
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19605
City Area Code	610
Local Phone Number	208-1991
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	ENS
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	false
Entity Shell Company	false
Entity Public Float			$ 3,859,791,990
Entity Common Stock, Shares Outstanding (in shares)		40,147,603
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement for its Annual Meeting of Stockholders to be held on or about August 1, 2024 are incorporated by reference in Part III of this Annual Report.
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Central Index Key	0001289308

Restructuring, Exit and Other Charges - Additional Information (Details)			3 Months Ended	12 Months Ended
	Jun. 29, 2022 USD ($) Employee	Mar. 03, 2022 USD ($)	Jan. 01, 2023 USD ($)	Mar. 31, 2024 USD ($) Employee	Mar. 31, 2023 USD ($) Employee	Mar. 31, 2022 USD ($) Employee	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Nov. 08, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Expected cost remaining				$ 2,276,000
Write-off of assets relating to restructuring and other exit charges				(24,229,000)	$ (8,920,000)	$ (6,503,000)
Loss on assets held for sale				0	0	2,973,000
Restructuring and other exit charges				28,103,000	16,439,000	18,756,000
Restructuring charges, cash charges related to employee severance and other charges				6,064,000	2,224,000	6,013,000
Employee Severance
Restructuring Cost and Reserve [Line Items]
Exit charges				20,097,000	14,752,000	14,328,000
Restructuring charges				8,006,000	1,687,000	4,428,000
Restructuring and other exit charges				28,103,000	16,439,000	18,756,000
Closure of Facility in Samudio, Spain
Restructuring Cost and Reserve [Line Items]
Gain on disposal of facility						740,000
Proceeds for sale of certain licenses and assets						1,779,000
Closure of Facility in Hagen, Germany
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges						$ 60,000,000
Expected reduction in number of employees \| Employee						200
Fixed asset impairment			$ 3,975,000
Fair value of fixed assets			$ 14,456,000
Closure of Facility in Hagen, Germany \| Fixed Asset Write Off, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges						$ 3,522,000	$ 7,946,000
Closure of Facility in Hagen, Germany \| Severance, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges						8,069,000	23,331,000
Closure of Facility in Hagen, Germany \| Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges						40,000,000
Closure of Facility in Hagen, Germany \| Inventory, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges						20,000,000
Cost of goods sold						960,000
Closure of Facility in Hagen, Germany \| Site Clean Up, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2,118,000	2,207,000
Closure of Facility in Hagen, Germany \| Accelerated Depreciation, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges				526,000	562,000
Closure of Facility in Vijayawada, India
Restructuring Cost and Reserve [Line Items]
Exit charges						1,509,000
Cost of goods sold						820,000
Assets held for sale				4,573,000		4,573,000
Loss on assets held for sale						2,973,000
Fair value of fixed assets				1,600,000		1,600,000
Closure Of Facility In Targovishte, Bulgaria
Restructuring Cost and Reserve [Line Items]
Expected cost remaining									$ 26,000,000
Proceeds for sale of certain licenses and assets							1,489,000
Loss on assets held for sale							(1,208,000)
Restructuring and other exit charges							$ 220,000	$ 5,123,000	$ 20,242,000
Closure Of Facility In Ooltewah, Tennessee
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges	$ 18,500,000
Expected reduction in number of employees \| Employee	165
Closure Of Facility In Ooltewah, Tennessee \| Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges	$ 9,300,000				7,261,000
Closure Of Facility In Ooltewah, Tennessee \| Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges	$ 9,200,000			4,399,000	2,735,000
Closure Of Facility In Ooltewah, Tennessee \| Inventories, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges					1,613,000
Closure of Facility in Sylmar, California
Restructuring Cost and Reserve [Line Items]
Write-off of assets relating to restructuring and other exit charges		$ (8,837,000)
Exit charges						12,730,000
Restructuring charges						3,892,000
Closure of Facility in Sylmar, California \| Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges				377,000
Closure of Facility in Sylmar, California \| Severance, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges				7,155,000	1,682,000
Closure of Facility in Sylmar, California \| Contract Assets, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges					417,000
Closure of Facility in Sylmar, California \| Inventory, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges				3,098,000
Indefinite Suspension of Facility in Russia
Restructuring Cost and Reserve [Line Items]
Write-off of assets relating to restructuring and other exit charges		(1,284,000)			739,000
Fixed asset impairment		$ 3,999,000
Cost of goods sold					932,000
OutBack And Mojave Brands
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										$ 24,500,000
OutBack And Mojave Brands \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										900,000
Write-off of assets relating to restructuring and other exit charges				(689,000)
OutBack And Mojave Brands \| Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										23,600,000
Write-off of assets relating to restructuring and other exit charges				(551,000)
OutBack And Mojave Brands \| Inventories, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Write-off of assets relating to restructuring and other exit charges				(17,075,000)
Closure Of Facility In Spokane, Washington
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										3,600,000
Closure Of Facility In Spokane, Washington \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										1,400,000
Write-off of assets relating to restructuring and other exit charges				(1,343,000)
Closure Of Facility In Spokane, Washington \| Fixed Asset Write Off, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected remaining restructuring charges										$ 2,200,000
Write-off of assets relating to restructuring and other exit charges				(2,066,000)
Energy Systems
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges				8,840,000	1,441,000	2,713,000
Energy Systems \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance payments				$ 4,468,000	1,230,000	$ 1,284,000
Approximate number of positions eliminated \| Employee				146		10
Exit charges				$ 4,312,000	123,000	$ 708,000
Restructuring charges				4,526,000	1,318,000	2,005,000
Restructuring and other exit charges				8,838,000	1,441,000	2,713,000
Motive Power
Restructuring Cost and Reserve [Line Items]
Loss on assets held for sale				0	0	2,973,000
Restructuring and other exit charges				11,697,000	$ 12,864,000	17,059,000
Motive Power \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance payments				$ 2,713,000
Approximate number of positions eliminated \| Employee				37	9
Exit charges				$ 8,253,000	$ 12,537,000	14,711,000
Restructuring charges				3,445,000	327,000	2,348,000
Restructuring and other exit charges				11,698,000	12,864,000	17,059,000
Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit charges				7,566,000	2,134,000	(1,016,000)
Specialty \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Exit charges				7,532,000	2,092,000	(1,091,000)
Restructuring charges				35,000	42,000	75,000
Restructuring and other exit charges				$ 7,567,000	$ 2,134,000	$ (1,016,000)

Warranty (Tables)

12 Months Ended

Mar. 31, 2024

Guarantees [Abstract]

Analysis Of Changes In Liability For Product Warranties

An analysis of changes in the liability for product warranties is as follows:


	Fiscal year ended March 31,
	2024		2023		2022
Balance at beginning of year	$	56,630	$	54,978	$	58,962
Current year provisions	34,110		29,132		17,645
Costs incurred	(30,160)		(25,251)		(20,648)

Foreign currency translation adjustment	239		(2,229)		(981)
Balance at end of year	$	60,819	$	56,630	$	54,978

Fair Value of Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Financial Assets And (Liabilities), Measured At Fair Value On A Recurring Basis

The following tables represent the financial assets and (liabilities) measured at fair value on a recurring basis as of March 31, 2024 and March 31, 2023 and the basis for that measurement:


	Total Fair Value Measurement March 31, 2024		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Lead forward contracts	$	(835)	$	—	$	(835)	$	—
Foreign currency forward contracts	5		—		5		—
Interest rate swaps	2,696		—		2,696		—
Net investment hedges	(19,167)		—		(19,167)		—
Total derivatives	$	(17,301)	$	—	$	(17,301)	$	—


	Total Fair Value Measurement March 31, 2023		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Lead forward contracts	$	(89)	$	—	$	(89)	$	—
Foreign currency forward contracts	923		—		923		—
Interest Rate Swaps	(1,162)				(1,162)
Net investment hedges	(15,760)		—		(15,760)		—
Total derivatives	$	(16,088)	$	—	$	(16,088)	$	—

Carrying Amounts And Estimated Fair Values Of Company's Financial Instruments

The carrying amounts and estimated fair values of the Company’s derivatives and Senior Notes at March 31, 2024 and 2023 were as follows:


	March 31, 2024				March 31, 2023
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Derivatives(1)	$	—	$	—	$	—	$	—
Financial liabilities:
Senior Notes (2)	$	600,000	$	582,750	$	300,000	$	276,000
Derivatives(1)	(17,301)		(17,301)		(16,088)		(16,088)

(2)The fair value amount of the Senior Notes at March 31, 2024 and March 31, 2023 represent the trading value of the instruments.

Fair Value of Financial Instruments - Additional Information (Detail) $ in Thousands				3 Months Ended		12 Months Ended
	Nov. 08, 2023 USD ($)	Mar. 03, 2022 USD ($)	Jan. 03, 2022 USD ($)	Mar. 31, 2024 USD ($)	Jan. 01, 2023 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impairment of indefinite-lived intangibles						$ 13,619	$ 480	$ 1,178
Loss on assets held for sale						0	$ 0	2,973
Indefinite Suspension of Facility in Russia
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed asset impairment		$ 3,999
Closure of Facility in Vijayawada, India
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of fixed assets				$ 1,600		1,600		1,600
Assets held for sale				4,573		$ 4,573		4,573
Loss on assets held for sale								2,973
Closure of Facility in Hagen, Germany
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of fixed assets					$ 14,456
Fixed asset impairment					$ 3,975
Closure Of Facility In Ooltewah, Tennessee \| Fixed Asset Write-Off
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Restructuring charges				$ 7,300
2027 Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading of convertible notes, face value, disclosed as a percentage				94.00%		94.00%	92.00%
2032 Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading of convertible notes, face value, disclosed as a percentage				100.00%		100.00%
Trademarks
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of fixed assets	$ 880
Impairment of indefinite-lived intangibles	$ 6,020
Trademarks \| EMEA
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of fixed assets			$ 6,900					980	$ 7,599
Impairment of indefinite-lived intangibles			$ 480					$ 1,178
Royalty Rate \| Trademarks \| Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement inputs	0.015
Royalty Rate \| Trademarks \| EMEA \| Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement inputs			0.015					0.0125
Discount Rate \| Trademarks \| Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement inputs	0.245
Discount Rate \| Trademarks, One \| EMEA \| Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement inputs			0.240					0.130
Discount Rate \| Trademarks, Two \| EMEA \| Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement inputs								0.145

Commitments, Contingencies and Litigation	12 Months Ended
Commitments, Contingencies and Litigation	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Litigation	Commitments, Contingencies and Litigation Litigation and Other Legal Matters In the ordinary course of business, the Company and its subsidiaries are routinely defendants in or parties to pending and threatened legal actions and proceedings, including actions brought on behalf of various classes of claimants. These actions and proceedings are generally based on alleged violations of environmental, anti-competition, employment, contract and other laws. In some of these actions and proceedings, claims for substantial monetary damages are asserted against the Company and its subsidiaries. In the ordinary course of business, the Company and its subsidiaries are also subject to regulatory and governmental examinations, information gathering requests, inquiries, investigations, and threatened legal actions and proceedings. In connection with formal and informal inquiries by federal, state, local and foreign agencies, the Company and its subsidiaries receive numerous requests, subpoenas and orders for documents, testimony and information in connection with various aspects of their activities. European Competition Investigations Certain of the Company’s European subsidiaries had received subpoenas and requests for documents and, in some cases, interviews from, and have had on-site inspections conducted by the competition authorities of Belgium, Germany and the Netherlands relating to conduct and anticompetitive practices of certain industrial battery participants. As of March 31, 2024 and March 31, 2023, the Company did not have a reserve balance related to these matters. The precise scope, timing and time period at issue, as well as the final outcome of the investigations or customer claims, remain uncertain. Accordingly, the Company’s estimate may change from time to time, and actual losses could vary. Environmental Issues As a result of its operations, the Company is subject to various federal, state and local, as well as international environmental laws and regulations and is exposed to the costs and risks of registering, handling, processing, storing, transporting, and disposing of hazardous substances, especially lead and acid. The Company’s operations are also subject to federal, state, local and international occupational safety and health regulations, including laws and regulations relating to exposure to lead in the workplace. The Company believes that it has adequate reserves to satisfy its environmental liabilities. Collective Bargaining At March 31, 2024, the Company had approximately 10,797 employees. Of these employees, approximately 28% were covered by collective bargaining agreements. Employees covered by collective bargaining agreements that expire in the next twelve months were approximately 7% of the total workforce. The average term of these agreements is 2 years, with the longest term being 4 years. The Company considers its employee relations to be good and did not experience any significant labor unrest or disruption of production during fiscal 2024. Lead, Foreign Currency Forward Contracts and Swaps To stabilize its lead costs and reduce volatility from currency movements, the Company enters into contracts with financial institutions. The vast majority of such contracts are for a period not extending beyond one year. The Company also entered into cross currency fixed interest rate swap agreements to hedge its net investments in foreign operations against future volatility in the exchange rates between U.S. Dollars and Euros and these agreements mature on December 15, 2027. Please refer to Note 13 - Derivative Financial Instruments for more details. Other The Company has various purchase and capital commitments incidental to the ordinary conduct of business. In the aggregate, such commitments are not at prices in excess of current market.

Stockholders’ Equity (Tables)

12 Months Ended

Mar. 31, 2024

Equity [Abstract]

Change in Number of Shares of Common Stock Outstanding

The following demonstrates the change in the number of shares of common stock outstanding during fiscal years ended March 31, 2022, 2023 and 2024, respectively:



Shares outstanding as of March 31, 2021			42,753,020
Purchase of treasury stock			(1,996,334)

Shares issued towards equity-based compensation plans, net of equity awards surrendered for option price and taxes			229,972
Shares outstanding as of March 31, 2022			40,986,658
Purchase of treasury stock			(358,365)
Shares issued under equity-based compensation plans, net of equity awards surrendered for option price and taxes			272,766
Shares outstanding as of March 31, 2023			40,901,059
Purchase of treasury stock			(1,002,415)
Shares issued under equity-based compensation plans, net of equity awards surrendered for option price and taxes			373,292
Shares outstanding as of March 31, 2024			40,271,936

Components Of Accumulated Other Comprehensive Income

The components of AOCI, net of tax, are as follows:


	Beginning Balance		Before Reclassifications		Amount Reclassified from AOCI		Ending Balance
March 31, 2024
Pension funded status adjustment	$	(4,423)	$	(5,672)	$	297	$	(9,798)
Net unrealized gain (loss) on derivative instruments	1,411		6,283		(6,939)		755
Foreign currency translation adjustment (1)	(180,462)		(15,346)		—		(195,808)
Accumulated other comprehensive loss	$	(183,474)	$	(14,735)	$	(6,642)	$	(204,851)
March 31, 2023
Pension funded status adjustment	$	(12,637)	$	7,872	$	342	$	(4,423)
Net unrealized gain (loss) on derivative instruments	2,963		(2,453)		901		1,411
Foreign currency translation adjustment (1)	(133,821)		(46,641)		—		(180,462)
Accumulated other comprehensive loss	$	(143,495)	$	(41,222)	$	1,243	$	(183,474)
March 31, 2022
Pension funded status adjustment	$	(20,947)	$	7,374	$	936	$	(12,637)
Net unrealized gain (loss) on derivative instruments	360		10,063		(7,460)		2,963
Foreign currency translation adjustment	(95,296)		(38,525)		—		(133,821)
Accumulated other comprehensive loss	$	(115,883)	$	(21,088)	$	(6,524)	$	(143,495)

Reclassification out of Accumulated Other Comprehensive Income

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2024:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized gain on derivative instruments	$	(9,057)	Cost of goods sold
Tax expense	2,118
Net unrealized gain on derivative instruments, net of tax	$	(6,939)

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(713)	Interest expense
Tax expense	167
Net unrealized gain on derivative instruments, net of tax	$	(546)

Defined benefit pension costs:
Prior service costs and deferrals	$	326	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(29)
Net periodic benefit cost, net of tax	$	297

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2023:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized loss on derivative instruments	$	1,176	Cost of goods sold
Tax benefit	(275)
Net unrealized loss on derivative instruments, net of tax	$	901

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(3,587)	Interest expense
Tax expense	839
Net unrealized gain on derivative instruments, net of tax	$	(2,748)

Defined benefit pension costs:
Prior service costs and deferrals	$	478	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(136)
Net periodic benefit cost, net of tax	$	342

The following table presents reclassifications from AOCI during the twelve months ended March 31, 2022:


Components of AOCI	Amounts Reclassified from AOCI		Location of (Gain) Loss Recognized on Income Statement
Derivatives in Cash Flow Hedging Relationships:
Net unrealized gain on derivative instruments	$	(9,742)	Cost of goods sold
Tax benefit	2,282
Net unrealized gain on derivative instruments, net of tax	$	(7,460)

Derivatives in net investment hedging relationships:
Net unrealized gain on derivative instruments	$	(1,181)	Interest expense
Tax expense	276
Net unrealized gain on derivative instruments, net of tax	$	(905)

Defined benefit pension costs:
Prior service costs and deferrals	$	1,212	Net periodic benefit cost, included in other (income) expense, net - See Note 15
Tax benefit	(276)
Net periodic benefit cost, net of tax	$	936

Other Liabilities (Tables)

12 Months Ended

Mar. 31, 2024

Other Liabilities Disclosure [Abstract]

Schedule Of Other Long-Term Liabilities

Other liabilities consist of the following:


	March 31,
	2024		2023
Operating lease liabilities	$	61,687	$	66,555
Warranty	34,515		32,404
Pension	25,512		24,528
Long-term interest rate swaps	19,167		15,760
Liability for uncertain tax positions	3,300		3,930
Contract liabilities	959		1,437
Tax Act - Transition Tax	—		34,715
Other	6,742		23,613
Total	$	151,882	$	202,942

Accrued Expenses

12 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Accrued Expenses

Accrued expenses consist of the following:


	March 31,
	2024		2023
Payroll and benefits	$	84,734	$	80,826
Accrued selling expenses	46,738		47,330
Contract liabilities	27,649		34,594
Warranty	26,304		24,226
Operating lease liabilities	19,280		21,230
VAT and other non-income taxes	17,595		15,321
Freight	16,549		16,482
Income taxes payable (1)	16,716		8,152
Interest	9,201		7,531


Other	58,954		53,255
Total	$	323,720	$	308,947

Income Taxes

12 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes


	Fiscal year ended March 31,
	2024		2023		2022
Current income tax expense
Current:
Federal	$	21,785	$	21,203	$	9,558
State	3,252		5,654		4,022
Foreign	27,396		23,208		15,333
Total current income tax expense	52,433		50,065		28,913
Deferred income tax (benefit) expense
Federal	(25,008)		(18,370)		1,183
State	(3,564)		(2,534)		(1,453)
Foreign	(772)		5,668		1,385
Total deferred income tax (benefit) expense	(29,344)		(15,236)		1,115
Total income tax expense	$	23,089	$	34,829	$	30,028

Earnings before income taxes consists of the following:


	Fiscal year ended March 31,
	2024		2023		2022
United States	$	99,230	$	38,703	$	21,871
Foreign	192,955		171,936		152,068
Earnings before income taxes	$	292,185	$	210,639	$	173,939

Income taxes paid by the Company for the fiscal years ended March 31, 2024, 2023 and 2022 were $28,810, $46,309 and $50,484, respectively.

The following table sets forth the tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities:


	March 31,
	2024		2023
Deferred tax assets:
Accounts receivable	$	309	$	219
Inventories	13,472		6,387
Net operating loss carryforwards	51,005		48,801
Lease liabilities	20,081		20,888
Capitalized R&D Expenditures	32,740		16,378
Accrued expenses	35,132		31,949
Other assets	29,079		22,029
Gross deferred tax assets	181,818		146,651
Less valuation allowance	(35,754)		(31,172)
Total deferred tax assets	146,064		115,479
Deferred tax liabilities:
Property, plant and equipment	45,493		42,884
Lease Right-of-use assets	20,071		20,888
Intangible assets	56,726		59,152
Other liabilities	4,560		4,521
Total deferred tax liabilities	126,850		127,445
Net deferred tax assets (liabilities)	$	19,214	$	(11,966)

The Company has approximately $539 in United States federal net operating loss carryforwards, all of which are limited by Section 382 of the Internal Revenue Code, with expirations between 2024 and 2028. The Company has approximately $211,489 of foreign net operating loss carryforwards, of which $111,526 may be carried forward indefinitely and $99,963 expire between fiscal 2024 and fiscal 2042. In addition, the Company also has approximately $25,646 of state net operating loss carryforwards with expirations between fiscal 2024 and fiscal 2043.

The following table sets forth the changes in the Company's valuation allowance for fiscal 2024, 2023 and 2022:


	Balance at Beginning of Period		Additions Charged to Expense		Valuation Allowance Reversal		Other(1)		Balance at End of Period

Fiscal year ended March 31, 2022	$	31,928	$	4,486	$	(1,535)	$	(3,862)	$	31,017
Fiscal year ended March 31, 2023	31,017		2,654		(586)		(1,913)		31,172
Fiscal year ended March 31, 2024	31,172		9,463		(2,614)		(2,267)		35,754

(1)Includes the impact of currency changes and the expiration of net operating losses for which a full valuation allowance was recorded.

As of March 31, 2024 and 2023, the Company had no federal valuation allowance and the valuation allowance associated with the state tax jurisdictions was $535 and $343, respectively.

As of March 31, 2024 and 2023, the valuation allowance associated with certain foreign tax jurisdictions was $35,219 and $30,829, respectively. Of the net increase of $4,389, $6,656 was recorded as an increase to tax expense primarily related to deferred tax assets generated in the current year that the Company believes are not more likely than not to be realized, offset by $(2,267) primarily related to foreign currency translation adjustments and expiration of foreign net operating losses for which a full valuation allowance was recorded.

A reconciliation of income taxes at the statutory rate (21.0% for fiscal 2024, 2023 and 2022) to the income tax provision is as follows:


	Fiscal year ended March 31,
	2024		2023		2022
United States statutory income tax expense	$	61,358	$	44,233	$	36,527
Increase (decrease) resulting from:
State income taxes, net of federal effect	(995)		1,714		1,724
Nondeductible expenses and other	3,833		6,028		1,217
Net effect of GILTI, FDII, BEAT	3,313		2,457		5,405

Effect of foreign operations	(17,475)		(12,978)		(14,192)
Valuation allowance	6,849		2,068		2,951

Research and Development Credit	(5,158)		(5,063)		(3,604)
IRA Impact	(28,636)		(3,630)		—
Income tax expense	$	23,089	$	34,829	$	30,028

The effective income tax rates for the fiscal years ended March 31, 2024, 2023 and 2022 were 7.9%, 16.5% and 17.3%, respectively. The effective income tax rate with respect to any period may be volatile based on the mix of income in the tax jurisdictions in which the Company operates and the amount of its consolidated income before taxes. The rate decrease in fiscal 2024 compared to fiscal 2023 is primarily due to the impact of IRA offset by changes in mix of earnings among tax jurisdictions. The rate decrease in fiscal 2023 compared to fiscal 2022 is primarily due to the impact of IRA offset by changes in mix of earnings among tax jurisdictions.

In fiscal 2024, the foreign effective income tax rate on foreign pre-tax income of $192,955 was 13.8%. In fiscal 2023, the foreign effective income tax rate on foreign pre-tax income of $171,936 was 16.8% and in fiscal 2022, the foreign effective income tax rate on foreign pre-tax income of $152,068 was 11.0%.The rate decrease in fiscal 2024 compared to fiscal 2023 is primarily due to additional income taxes recorded on undistributed earnings in fiscal 2023 and changes in mix of earnings among tax jurisdictions. The rate increase in fiscal 2023 compared to fiscal 2022 is primarily due to a reduction in favorable permanent items and changes in mix of earnings among tax jurisdictions.

Income from the Company's Swiss subsidiary comprised a substantial portion of its overall foreign mix of income for the fiscal years ended March 31, 2024, 2023 and 2022 and was taxed, excluding the impact from the Swiss tax reform, at approximately 9%, 7% and 4%, respectively.

The Company has approximately $1,352,000 and $1,340,000 of undistributed earnings of foreign subsidiaries for fiscal years 2024 and 2023, respectively. A small portion of the above earnings were no longer considered indefinitely reinvested, as a result, the Company recorded additional income taxes in prior years. The Company intends to continue to be indefinitely reinvested on the remaining undistributed foreign earnings and outside basis differences and therefore, no additional income taxes have been provided.

Uncertain Tax Positions

The following table summarizes activity of the total amounts of unrecognized tax benefits:


	Fiscal year ended March 31,
	2024		2023		2022
Balance at beginning of year	$	3,495	$	4,770	$	6,785
Increases related to current year tax positions	(2)		24		21

Increases related to prior year tax positions	—		(1)		598
Decreases related to prior tax positions	(129)		—		—
Decreases related to prior year tax positions settled	—		(77)		(784)
Lapse of statute of limitations	(519)		(1,221)		(1,850)
Balance at end of year	$	2,845	$	3,495	$	4,770

All of the balance of unrecognized tax benefits at March 31, 2024, if recognized, would be included in the Company’s Consolidated Statements of Income and have a favorable impact on both the Company’s net earnings and effective tax rate.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, and various states and foreign jurisdictions and is routinely subject to income tax examinations. As of March 31, 2024, the most significant tax examinations in process are the United States and Switzerland. The Company regularly assesses the likely outcomes of its tax audits and disputes to determine the appropriateness of its tax reserves. However, any tax authority could take a position on tax treatment that is contrary to the Company’s expectations, which could result in tax liabilities in excess of reserves. With few exceptions, the Company is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2009.

While the net effect on total unrecognized tax benefits cannot be reasonably estimated, approximately $533 is expected to reverse in fiscal 2024 due to expiration of various statute of limitations.

The Company recognizes tax related interest and penalties in income tax expense in its Consolidated Statements of Income. As of March 31, 2024 and 2023, the Company had an accrual of $455 and $435, respectively, for interest and penalties.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//740/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-21

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482526/740-270-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482603/740-30-50-2

+ Details

Subsequent Events	12 Months Ended
Subsequent Events	Mar. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Dividend On May 22, 2024, the Board of Directors approved a quarterly cash dividend of $0.225 per share of common stock to be paid on June 28, 2024, to stockholders of record as of June 14, 2024. Bren-Tronics, Inc. Acquisition On May 2, 2024, EnerSys announced that the Company has entered into a definitive agreement to acquire Bren-Tronics, Inc. for approximately $208 million, subject to adjustments. Bren-Tronics, Inc is a leading manufacturer of highly reliable portable power solutions, including small and large lithium batteries and charging solutions, for military and defense applications. The acquisition is subject to certain closing conditions, including the receipt of governmental regulatory approvals and the proper onveyance of all required closing deliverables. The acquisition is expected to close by the end of the second quarter of fiscal 2025, subject to the satisfaction of customary closing conditions.

Property, Plant, and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 64,028	$ 60,405	$ 62,584
Interest capitalized	$ 1,268	$ 857	$ 447

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 284,773	$ 323,418
Work-in-process	115,191	123,401
Finished goods	297,734	350,979
Total	$ 697,698	$ 797,798

Earnings Per Share (Tables)

12 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Reconciliation From Basic To Diluted Average Common Shares And Net Earnings Per Common Share

The following table sets forth the reconciliation from basic to diluted weighted-average number of common shares outstanding and the calculations of net earnings per common share attributable to EnerSys stockholders.


	Fiscal year ended March 31,
	2024		2023		2022
Net earnings attributable to EnerSys stockholders	$	269,096	$	175,810	$	143,911
Weighted-average number of common shares outstanding:
Basic	40,669,392		40,809,235		42,106,337
Dilutive effect of:
Common shares from exercise and lapse of equity awards, net of shares assumed reacquired	702,047		517,520		677,036
Diluted weighted-average number of common shares outstanding	41,371,439		41,326,755		42,783,373
Basic earnings per common share attributable to EnerSys stockholders	$	6.62	$	4.31	$	3.42
Diluted earnings per common share attributable to EnerSys stockholders	$	6.50	$	4.25	$	3.36
Anti-dilutive equity awards not included in diluted weighted-average common shares	356,893		710,678		951,057

Income Taxes - Schedule of Earning Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
United States	$ 99,230	$ 38,703	$ 21,871
Foreign	192,955	171,936	152,068
Earnings before income taxes	$ 292,185	$ 210,639	$ 173,939

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(11))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479557/942-235-S99-1

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-SubTopic 20
-Topic 940
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481913/940-20-25-1

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

+ Details

Stockholders' Equity - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Sep. 29, 2022
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (183,474)	$ (143,495)	$ (115,883)
Before Reclassifications	(14,735)	(41,222)	(21,088)
Amount Reclassified from AOCI	(6,642)	1,243	(6,524)
Ending Balance	(204,851)	(183,474)	(143,495)
Foreign currency translation adjustment, gain	(14,735)	(41,222)	(21,088)
Cross currency fixed interest rate swaps \| Designated as Hedging Instrument
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Notional amount	300			$ 300,000
Cross Currency Fixed Interest Rate Contract \| Designated as Hedging Instrument
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Notional amount	150			$ 150,000
Pension funded status adjustment
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(4,423)	(12,637)	(20,947)
Before Reclassifications	(5,672)	7,872	7,374
Amount Reclassified from AOCI	297	342	936
Ending Balance	(9,798)	(4,423)	(12,637)
Foreign currency translation adjustment, gain	(5,672)	7,872	7,374
Net unrealized gain (loss) on derivative instruments
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	1,411	2,963	360
Before Reclassifications	6,283	(2,453)	10,063
Amount Reclassified from AOCI	(6,939)	901	(7,460)
Ending Balance	755	1,411	2,963
Foreign currency translation adjustment, gain	6,283	(2,453)	10,063
Foreign currency translation adjustment
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(180,462)	(133,821)	(95,296)
Before Reclassifications	(15,346)	(46,641)	(38,525)
Amount Reclassified from AOCI	0	0	0
Ending Balance	(195,808)	(180,462)	(133,821)
Foreign currency translation adjustment, gain	(15,346)	(46,641)	(38,525)
Foreign currency translation adjustment \| Cross currency fixed interest rate swaps \| Net investment hedges \| Designated as Hedging Instrument
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Before Reclassifications	2,615	19,491	228
Foreign currency translation adjustment, gain	2,615	19,491	228
Foreign currency translation adjustment, tax	$ 797	$ 4,557	$ 70

Stock-Based Compensation - Summary of Information Regarding Stock Options Outstanding and Exercisable (Detail)	12 Months Ended
	Mar. 31, 2024 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	1,190,109
Weighted- Average Remaining Contractual Life (Years)	7 years
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 83.74
$57.60-$60.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	98,680
Weighted- Average Remaining Contractual Life (Years)	5 years
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 57.73
$60.01-$70.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	26,118
Weighted- Average Remaining Contractual Life (Years)	10 months 24 days
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 68.76
$70.01-$80.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	423,674
Weighted- Average Remaining Contractual Life (Years)	7 years 4 months 24 days
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 75.50
$80.01-$90.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	219,580
Weighted- Average Remaining Contractual Life (Years)	5 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 83.00
$90.01-$100.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	140,375
Weighted- Average Remaining Contractual Life (Years)	8 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 93.16
$100.01-$104.18
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options \| shares	281,682
Weighted- Average Remaining Contractual Life (Years)	8 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) \| $ / shares	$ 102.51

Earnings Per Share

12 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings Per Share


	Fiscal year ended March 31,
	2024		2023		2022
Net earnings attributable to EnerSys stockholders	$	269,096	$	175,810	$	143,911
Weighted-average number of common shares outstanding:
Basic	40,669,392		40,809,235		42,106,337
Dilutive effect of:
Common shares from exercise and lapse of equity awards, net of shares assumed reacquired	702,047		517,520		677,036
Diluted weighted-average number of common shares outstanding	41,371,439		41,326,755		42,783,373
Basic earnings per common share attributable to EnerSys stockholders	$	6.62	$	4.31	$	3.42
Diluted earnings per common share attributable to EnerSys stockholders	$	6.50	$	4.25	$	3.36
Anti-dilutive equity awards not included in diluted weighted-average common shares	356,893		710,678		951,057

Restructuring, Exit and Other Charges (Tables)

12 Months Ended

Mar. 31, 2024

Restructuring and Related Activities [Abstract]

Acquisition And Non-Acquisition Related Restructuring Reserve

Restructuring and exit charges for fiscal 2024, 2023 and 2022 by reportable segments are as follows:


	Fiscal year ended March 31, 2024
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	4,526	$	3,445	$	35	$	8,006
Exit charges	4,312		8,253		7,532		20,097
Restructuring and other exit charges	$	8,838	$	11,698	$	7,567	$	28,103


	Fiscal year ended March 31, 2023
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	1,318	$	327	$	42	$	1,687
Exit charges	123		12,537		2,092		14,752
Restructuring and other exit charges	$	1,441	$	12,864	$	2,134	$	16,439


	Fiscal year ended March 31, 2022
	Energy Systems		Motive Power		Specialty		Total
Restructuring charges	$	2,005	$	2,348	$	75	$	4,428
Exit charges	708		14,711		(1,091)		14,328
Restructuring and other exit charges	$	2,713	$	17,059	$	(1,016)	$	18,756

A roll-forward of the restructuring reserve is as follows:



Balance at March 31, 2021	$	2,595
Accrued	4,428
Costs incurred	(6,013)
Foreign currency impact and other	20
Balance at March 31, 2022	$	1,030
Accrued	1,687
Costs incurred	(2,224)
Foreign currency impact and other	(48)
Balance at March 31, 2023	$	445
Accrued	8,006
Costs incurred	(6,064)
Foreign currency impact and other	21
Balance at March 31, 2024	$	2,408

Derivative Financial Instruments - Derivatives Effect on Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 8,200	$ (3,196)	$ 13,134
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	9,057	(1,176)	9,742
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(2,695)	29,021	1,479
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	713	3,587	1,181
Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(846)	1,182	(157)
Lead forward contracts \| Designated as Hedging Instrument \| Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(455)	(3,883)	12,193
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	5,388	(3,765)	8,974
Foreign currency forward contracts \| Designated as Hedging Instrument \| Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	1,740	1,849	941
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	612	2,589	768
Foreign currency forward contracts \| Derivatives Not Designated as Hedging Instruments \| Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(846)	1,182	(157)
Cross currency fixed interest rate swaps \| Designated as Hedging Instrument \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	(2,695)	29,021	1,479
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	713	3,587	$ 1,181
Interest rate swaps \| Designated as Hedging Instrument \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	6,915	(1,162)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ 3,057	$ 0

Leases - Additional Information Related to Leases (Detail)	Mar. 31, 2024	Mar. 31, 2023
Operating Leases:
Weighted average remaining lease term (years)	5 years 6 months	5 years 10 months 24 days
Weighted average discount rate	5.38%	4.93%
Finance Leases:
Weighted average remaining lease term (years)	3 years 9 months 18 days	3 years 8 months 12 days
Weighted average discount rate	7.40%	6.79%

Derivative Financial Instruments - Effect of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Derivatives, Fair Value [Line Items]
Derivatives Not Designated as Hedging Instruments	$ (846)	$ 1,182	$ (157)
Other (income) expense, net \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives Not Designated as Hedging Instruments	$ (846)	$ 1,182	$ (157)

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Leases:
Operating lease cost	$ 28,030	$ 20,232
Variable lease cost	11,669	9,816
Short term lease cost	8,078	4,310
Finance Leases:
Depreciation	297	95
Interest expense	57	10
Total	$ 48,131	$ 34,463

Prepaid and Other Current Assets

12 Months Ended

Mar. 31, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid and Other Current Assets

Prepaid and other current assets consist of the following:


	March 31,
	2024		2023
Prepaid income taxes	$	94,866	$	4,915
Contract assets	55,363		48,616
Prepaid non-income taxes	19,509		17,946
Non-trade receivables	4,124		6,978
Other	53,087		35,146
Total	$	226,949	$	113,601

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Mar. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Current assets:
Cash and cash equivalents	$ 333,324	$ 346,665
Accounts receivable, net of allowance for doubtful accounts (2024–$8,107; 2023–$8,775)	524,725	637,817
Inventories, net	697,698	797,798
Prepaid and other current assets	226,949	113,601
Total current assets	1,782,696	1,895,881
Property, plant, and equipment, net	532,450	513,283
Goodwill	682,934	676,715
Other intangible assets, net	319,407	360,412
Deferred taxes	49,798	49,152
Other assets	98,721	121,231
Total assets	3,466,006	3,616,674
Current liabilities:
Short-term debt	30,444	30,642
Current portion of finance leases	237	90
Accounts payable	369,456	378,641
Accrued expenses	323,720	308,947
Total current liabilities	723,857	718,320
Long-term debt, net of unamortized debt issuance costs	801,965	1,041,989
Finance leases	647	254
Deferred taxes	30,583	61,118
Other liabilities	151,882	191,112
Total liabilities	1,708,934	2,012,793
Commitments and contingencies
Equity:
Preferred Stock, $0.01 par value, 1,000,000 shares authorized, no shares issued or outstanding at March 31, 2024 and at March 31, 2023	0	0
Common Stock, $0.01 par value per share, 135,000,000 shares authorized, 56,363,924 shares issued and 40,271,936 shares outstanding at March 31, 2024; 56,004,613 shares issued and 40,901,059 shares outstanding at March 31, 2023	564	560
Additional paid-in capital	629,879	596,464
Treasury stock at cost, 16,091,988 shares held as of March 31, 2024 and 15,103,554 shares held as of March 31, 2023	(835,827)	(740,956)
Retained earnings	2,163,880	1,930,148
Contra equity - indemnification receivable	0	(2,463)
Accumulated other comprehensive loss	(204,851)	(183,474)
Total EnerSys stockholders’ equity	1,753,645	1,600,279
Nonredeemable noncontrolling interests	3,427	3,602
Total equity	1,757,072	1,603,881
Total liabilities and equity	$ 3,466,006	$ 3,616,674

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Total EnerSys Stockholders’ Equity	Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Contra-Equity	Non- redeemable Non- Controlling Interests
Beginning Balance at Mar. 31, 2021	$ 1,543,576	$ 1,539,755	$ 0	$ 555	$ 554,168	$ (563,481)	$ 1,669,751	$ (115,883)	$ (5,355)	$ 3,821
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	24,289	24,289			24,289
Exercise of stock options	1,336	1,336		2	1,334
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(9,150)	(9,150)			(9,150)
Purchase of common stock	(156,366)	(156,366)				(156,366)
Contra equity - indemnification receivable for acquisition related tax liability	1,735	1,735							1,735
Other	828	828			100	728
Net earnings	143,911	143,911					143,911
Dividends	(29,353)	(29,353)			723		(30,076)
Dissolution of joint venture	(47)									(47)
Other comprehensive income:
Pension funded status adjustment, (net of tax (expense) benefit)	8,310	8,310						8,310
Net unrealized gain (loss) on derivative instruments (net of tax benefit (expense))	2,603	2,603						2,603
Foreign currency translation adjustment	(38,397)	(38,525)						(38,525)		128
Ending Balance at Mar. 31, 2022	1,493,275	1,489,373	0	557	571,464	(719,119)	1,783,586	(143,495)	(3,620)	3,902
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	26,371	26,371			26,371
Exercise of stock options	4,393	4,393		3	4,390
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(6,453)	(6,453)			(6,453)
Purchase of common stock	(22,907)	(22,907)				(22,907)
Contra equity - indemnification receivable for acquisition related tax liability	1,157	1,157							1,157
Other	1,051	1,051			(19)	1,070
Net earnings	175,810	175,810					175,810
Dividends	(28,537)	(28,537)			711		(29,248)
Other comprehensive income:
Pension funded status adjustment, (net of tax (expense) benefit)	8,214	8,214						8,214
Net unrealized gain (loss) on derivative instruments (net of tax benefit (expense))	(1,552)	(1,552)						(1,552)
Foreign currency translation adjustment	(46,941)	(46,641)						(46,641)		(300)
Ending Balance at Mar. 31, 2023	1,603,881	1,600,279	0	560	596,464	(740,956)	1,930,148	(183,474)	(2,463)	3,602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	30,607	30,607			30,607
Exercise of stock options	10,786	10,786		4	10,782
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(9,166)	(9,166)			(9,166)
Purchase of common stock	(95,690)	(95,690)				(95,690)
Contra equity - indemnification receivable for acquisition related tax liability	2,463	2,463							2,463
Other	1,128	1,128			309	819
Net earnings	269,096	269,096					269,096
Dividends	(34,481)	(34,481)			883		(35,364)
Other comprehensive income:
Pension funded status adjustment, (net of tax (expense) benefit)	(5,375)	(5,375)						(5,375)
Net unrealized gain (loss) on derivative instruments (net of tax benefit (expense))	(656)	(656)						(656)
Foreign currency translation adjustment	(15,521)	(15,346)						(15,346)		(175)
Ending Balance at Mar. 31, 2024	$ 1,757,072	$ 1,753,645	$ 0	$ 564	$ 629,879	$ (835,827)	$ 2,163,880	$ (204,851)	$ 0	$ 3,427

Goodwill and Other Intangible Assets

12 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Other Intangible Assets

Information regarding the Company’s other intangible assets are as follows:


	March 31,
	2024						2023
	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Indefinite-lived intangible assets:
Trademarks	$	131,167	$	(953)	$	130,214	$	144,702	$	(953)	$	143,749
Finite-lived intangible assets:
Customer relationships	295,215		(147,833)		147,382		295,293		(130,262)		165,031
Non-compete	2,825		(2,825)		—		2,825		(2,825)		—
Technology	96,708		(55,969)		40,739		96,713		(47,585)		49,128
Trademarks	9,554		(8,482)		1,072		8,946		(6,442)		2,504
Licenses	1,196		(1,196)		—		1,196		(1,196)		—
Total	$	536,665	$	(217,258)	$	319,407	$	549,675	$	(189,263)	$	360,412

The Company’s amortization expense related to finite-lived intangible assets was $27,993, $30,748, and $33,294, for the years ended March 31, 2024, 2023 and 2022, respectively. The expected amortization expense based on the finite-lived intangible assets as of March 31, 2024, is $26,574 in fiscal 2025, $25,646 in fiscal 2026, $24,844 in fiscal 2027, $24,280 in fiscal 2028 and $22,451 in fiscal 2029.

Goodwill

The following table presents the changes in the carrying amount of goodwill by segment during fiscal 2023 and 2024:


	Energy Systems		Motive Power		Specialty		Total





Balance at March 31, 2022	$	279,461	$	323,303	$	97,876	$	700,640
Foreign currency translation adjustment	(21,257)		(1,773)		(895)		(23,925)
Balance at March 31, 2023	$	258,204	$	321,530	$	96,981	$	676,715
Acquisitions	—		4,390		—		4,390
Foreign currency translation adjustment	807		798		224		1,829
Balance at March 31, 2024	$	259,011	$	326,718	$	97,205	$	682,934

Impairment of goodwill, finite and indefinite-lived intangibles

Goodwill is tested annually for impairment during the fourth quarter or earlier upon the occurrence of certain events or substantive changes in circumstances that indicate goodwill is more likely than not impaired. The Company did not record any impairment relating to its goodwill during fiscal 2024, 2023, and 2022.

During the fiscal year 2024 and 2023, the Company recorded non-cash charges of $13,619 and $480, respectively, related to impairment of indefinite-lived trademarks under the caption “Impairment of indefinite-lived intangibles” in the Consolidated Statements of Income. Management completed its evaluation of key inputs used to estimate the fair value of its indefinite-lived trademarks and determined that an impairment charge was appropriate.

The Company estimated tax-deductible goodwill to be approximately $78,147 and $86,709 as of March 31, 2024 and 2023, respectively.

Prepaid and Other Current Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Contract assets	$ 55,363	$ 48,616
Prepaid non-income taxes	19,509	17,946
Non-trade receivables	4,124	6,978
Prepaid income taxes	94,866	4,915
Other	53,087	35,146
Total	$ 226,949	$ 113,601

Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable	$ 532,832	$ 646,592
Allowance for doubtful accounts	8,107	8,775
Accounts receivable, net	$ 524,725	$ 637,817

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule Of Accounts, Notes, Loans And Financing Receivable

The following table sets forth the changes in the Company's allowance for doubtful

accounts:


	Balance at Beginning of Period		Provision for Expected Credit Losses		Write-offs, net of Recoveries and Other		Balance at End of Period
Fiscal year ended March 31, 2022	$	12,992	$	2,621	$	(3,394)	$	12,219
Fiscal year ended March 31, 2023	12,219		(431)		(3,013)		8,775
Fiscal year ended March 31, 2024	8,775		1,873		(2,541)		8,107

Accounts Receivable


	March 31,
	2024		2023
Accounts receivable	$	532,832	$	646,592
Allowance for doubtful accounts	8,107		8,775
Accounts receivable, net	$	524,725	$	637,817

Retirement Plans - Summary of Pension Plan Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	$ 15,153	$ 13,975	$ 16,166
International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	32,563	40,104	$ 42,067
Quoted Price In Active Markets for Identical Assets (Level 1) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	15,153	13,975
Quoted Price In Active Markets for Identical Assets (Level 1) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	3,752	7,775
Significant Other Observable Inputs (Level 2) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Significant Other Observable Inputs (Level 2) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	314	32,329
Significant Unobservable Inputs (Level 3) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	28,497	0
Cash and Cash Equivalents \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	5,473	1,714
Cash and Cash Equivalents \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	3,752	7,775
Cash and Cash Equivalents \| Quoted Price In Active Markets for Identical Assets (Level 1) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	5,473	1,714
Cash and Cash Equivalents \| Quoted Price In Active Markets for Identical Assets (Level 1) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	3,752	7,775
Cash and Cash Equivalents \| Significant Other Observable Inputs (Level 2) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Cash and Cash Equivalents \| Significant Other Observable Inputs (Level 2) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Cash and Cash Equivalents \| Significant Unobservable Inputs (Level 3) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Cash and Cash Equivalents \| Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
US Equity Securities \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	8,308
US Equity Securities \| Quoted Price In Active Markets for Identical Assets (Level 1) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	8,308
US Equity Securities \| Significant Other Observable Inputs (Level 2) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
US Equity Securities \| Significant Unobservable Inputs (Level 3) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
International Equity Securities \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
International Equity Securities \| Quoted Price In Active Markets for Identical Assets (Level 1) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
International Equity Securities \| Significant Other Observable Inputs (Level 2) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
International Equity Securities \| Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Fixed Income Funds \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	9,680	3,953
Fixed Income Funds \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	314	32,329
Fixed Income Funds \| Quoted Price In Active Markets for Identical Assets (Level 1) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	9,680	3,953
Fixed Income Funds \| Quoted Price In Active Markets for Identical Assets (Level 1) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Fixed Income Funds \| Significant Other Observable Inputs (Level 2) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Fixed Income Funds \| Significant Other Observable Inputs (Level 2) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	314	32,329
Fixed Income Funds \| Significant Unobservable Inputs (Level 3) \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Fixed Income Funds \| Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
Other Investments \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	28,497
Other Investments \| Quoted Price In Active Markets for Identical Assets (Level 1) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0
Other Investments \| Significant Other Observable Inputs (Level 2) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0
Other Investments \| Significant Unobservable Inputs (Level 3) \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	$ 28,497	$ 0