Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 04, 2020	Sep. 30, 2019	Oct. 04, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 35,731	$ 62,698	$ 70,914	$ 111,334
Other comprehensive income (loss):
Net unrealized gain on derivative instruments, net of tax	1,470	3,586	3,813	1,257
Pension funded status adjustment, net of tax	305	237	596	474
Foreign currency translation adjustment	32,833	(32,199)	60,980	(35,410)
Total other comprehensive income (loss), net of tax	34,608	(28,376)	65,389	(33,679)
Total comprehensive income	70,339	34,322	136,303	77,655
Comprehensive gain (loss) attributable to noncontrolling interests	144	(131)	152	(214)
Comprehensive income attributable to EnerSys stockholders	$ 70,195	$ 34,453	$ 136,151	$ 77,869