Stockholders' Equity and Noncontrolling Interests - (Other Disclosures) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Oct. 02, 2022	Jul. 03, 2022	Oct. 03, 2021	Jul. 04, 2021	Oct. 02, 2022	Oct. 03, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 1,438,770	$ 1,493,275	$ 1,567,426	$ 1,543,576	$ 1,493,275	$ 1,543,576
Stock-based compensation	6,534	5,330	5,765	3,659
Exercise of stock options	115	1	771	387
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(5,624)	(633)	(4,197)	(4,803)
Purchase of common stock	0	(22,907)	0	(31,512)
Other	304	199	226	214
Net earnings	34,472	30,978	35,626	43,929
Dividends	(7,138)	(7,108)	(7,456)	(7,435)
Dissolution of joint venture				(47)
Other comprehensive income:
Pension funded status adjustment, net of tax	81	89	233	240	170	473
Net unrealized gain (loss) on derivative instruments (net of tax)	2,116	(8,234)	(2,233)	3,897	(6,118)	1,664
Foreign currency translation adjustment	(56,175)	(52,220)	(23,658)	15,321	(108,395)	(8,337)
Ending balance	$ 1,414,418	1,438,770	$ 1,573,857	$ 1,567,426	$ 1,414,418	$ 1,573,857
Dividends per common share (in dollars per share)	$ 0.175		$ 0.175	$ 0.175	$ 0.35	$ 0.35
Pension funded status adjustment, tax benefit (expense)		34	$ 69	$ 68
Net unrealized gain (loss) on derivative instrument, income tax expense (benefit)	$ 647	(2,514)	683	1,187
Contra equity - adjustment to indemnification receivable for acquisition related tax liability	963		1,354
Total EnerSys Stockholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,435,078	1,489,373	1,563,603	1,539,755	$ 1,489,373	$ 1,539,755
Stock-based compensation	6,534	5,330	5,765	3,659
Exercise of stock options	115	1	771	387
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(5,624)	(633)	(4,197)	(4,803)
Purchase of common stock	0	(22,907)	0	(31,512)
Other	304	199	226	214
Net earnings	34,472	30,978	35,626	43,929
Dividends	(7,138)	(7,108)	(7,456)	(7,435)
Other comprehensive income:
Pension funded status adjustment, net of tax	81	89	233	240
Net unrealized gain (loss) on derivative instruments (net of tax)	2,116	(8,234)	(2,233)	3,897
Foreign currency translation adjustment	(55,961)	(52,010)	(23,673)	15,272
Ending balance	1,410,940	1,435,078	1,570,019	1,563,603	1,410,940	1,570,019
Contra equity - adjustment to indemnification receivable for acquisition related tax liability	963		1,354
Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0	0	0	0	0	0
Other comprehensive income:
Ending balance	0	0	0	0	0	0
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	558	557	556	555	557	555
Exercise of stock options	1	1	1	1
Other comprehensive income:
Ending balance	559	558	557	556	559	557
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	576,294	571,464	553,627	554,168	571,464	554,168
Stock-based compensation	6,534	5,330	5,765	3,659
Exercise of stock options	114		770	386
Shares issued under equity awards (taxes paid related to net share settlement of equity awards), net	(5,624)	(633)	(4,197)	(4,803)
Other	28	(41)	52	44
Dividends	174	174	185	173
Other comprehensive income:
Ending balance	577,520	576,294	556,202	553,627	577,520	556,202
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(741,786)	(719,119)	(594,823)	(563,481)	(719,119)	(563,481)
Purchase of common stock	0	(22,907)	0	(31,512)
Other	276	240	174	170
Other comprehensive income:
Ending balance	(741,510)	(741,786)	(594,649)	(594,823)	(741,510)	(594,649)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,807,282	1,783,586	1,706,072	1,669,751	1,783,586	1,669,751
Net earnings	34,472	30,978	35,626	43,929
Dividends	(7,312)	(7,282)	(7,641)	(7,608)
Other comprehensive income:
Ending balance	1,834,442	1,807,282	1,734,057	1,706,072	1,834,442	1,734,057
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(203,650)	(143,495)	(96,474)	(115,883)	(143,495)	(115,883)
Other comprehensive income:
Pension funded status adjustment, net of tax	81	89	233	240
Net unrealized gain (loss) on derivative instruments (net of tax)	2,116	(8,234)	(2,233)	3,897
Foreign currency translation adjustment	(55,961)	(52,010)	(23,673)	15,272
Ending balance	(257,414)	(203,650)	(122,147)	(96,474)	(257,414)	(122,147)
Contra-Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(3,620)	(3,620)	(5,355)	(5,355)	(3,620)	(5,355)
Other comprehensive income:
Ending balance	(2,657)	(3,620)	(4,001)	(5,355)	(2,657)	(4,001)
Contra equity - adjustment to indemnification receivable for acquisition related tax liability	963		1,354
Non- redeemable Non- Controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	3,692	3,902	3,823	3,821	3,902	3,821
Dissolution of joint venture				(47)
Other comprehensive income:
Foreign currency translation adjustment	(214)	(210)	15	49
Ending balance	$ 3,478	$ 3,692	$ 3,838	$ 3,823	$ 3,478	$ 3,838

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