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Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 03, 2021	Dec. 31, 2019	Jan. 03, 2021	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 38,624	$ 27,305	$ 109,538	$ 138,639
Other comprehensive income (loss):
Net unrealized gain (loss) on derivative instruments, net of tax	2,718	(3,409)	6,531	(2,152)
Pension funded status adjustment, net of tax	269	220	865	694
Foreign currency translation adjustment	52,901	28,167	113,881	(7,243)
Total other comprehensive income (loss), net of tax	55,888	24,978	121,277	(8,701)
Total comprehensive income	94,512	52,283	230,815	129,938
Comprehensive gain (loss) attributable to noncontrolling interests	149	64	301	(150)
Comprehensive income attributable to EnerSys stockholders	$ 94,363	$ 52,219	$ 230,514	$ 130,088

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