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Business Segments - (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Jan. 02, 2022	Jan. 03, 2021
Segment Reporting Information [Line Items]
Net sales	$ 844,006	$ 751,067	$ 2,450,294	$ 2,164,393
Operating earnings by segment	51,165	56,071	161,759	164,706
Inventory adjustment relating to exit activities			(960)	0
Restructuring charges	(2,472)	(15,196)	(13,161)	(19,702)
Energy Systems | Americas
Segment Reporting Information [Line Items]
Net sales	385,242	337,248	1,126,287	1,031,457
Operating earnings by segment	3,542	18,407	11,777	63,489
Restructuring charges	(682)	(868)	(1,331)	(2,711)
Motive Power | EMEA
Segment Reporting Information [Line Items]
Net sales	339,510	304,373	996,313	830,945
Operating earnings by segment	39,030	40,270	130,660	91,695
Inventory adjustment relating to exit activities	0	0	(960)	0
Restructuring charges	(1,679)	(14,348)	(12,888)	(16,791)
Specialty | Asia
Segment Reporting Information [Line Items]
Net sales	119,254	109,446	327,694	301,991
Operating earnings by segment	11,065	12,590	33,443	29,224
Restructuring charges	$ (111)	$ 20	$ 1,058	$ (200)

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