Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 43,151	$ 42,793	$ 91,473	$ 87,412
Other comprehensive income (loss):
Net unrealized gain (loss) on derivative instruments, net of tax	3,669	1,758	616	2,428
Pension funded status adjustment, net of tax	338	268	665	549
Foreign currency translation adjustments	28,131	1,172	72,848	(22,168)
Total other comprehensive gain (loss), net of tax	32,138	3,198	74,129	(19,191)
Total comprehensive income	75,289	45,991	165,602	68,221
Comprehensive loss attributable to noncontrolling interests	(6)	(2,782)	81	(2,991)
Comprehensive income attributable to EnerSys stockholders	$ 75,295	$ 48,773	$ 165,521	$ 71,212