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Business Segments - (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 30, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Net sales	$ 763,698	$ 680,022	$ 2,306,065	$ 2,011,414
Intersegment sales	58,833	46,385	163,026	142,926
Operating earnings by segment	43,084	49,951	170,130	177,487
Restructuring, exit and other charges	9,417	5,392	18,071	8,252
Legal proceedings settlement income	0	2,843	0	2,843
Energy Systems
Segment Reporting Information [Line Items]
Net sales	448,181	329,478	1,310,846	966,834
Motive Power
Segment Reporting Information [Line Items]
Net sales	315,517	350,544	995,219	1,044,580
Americas
Segment Reporting Information [Line Items]
Net sales	503,061	401,999	1,545,110	1,183,147
Intersegment sales	13,022	7,208	30,450	20,954
Operating earnings by segment	43,081	37,961	149,574	134,003
Restructuring, exit and other charges	1,322	628	2,448	628
Americas | Inventory Adjustment
Segment Reporting Information [Line Items]
Restructuring, exit and other charges	2,475	3,747	2,475	3,747
Americas | Fixed Asset Write-Off
Segment Reporting Information [Line Items]
Restructuring, exit and other charges	0	0	5,441	0
EMEA
Segment Reporting Information [Line Items]
Net sales	202,278	217,792	588,279	632,283
Intersegment sales	40,236	26,354	114,959	93,480
Operating earnings by segment	12,608	17,659	41,614	48,691
Restructuring, exit and other charges	7,706	4,411	9,032	6,610
EMEA | Inventory Adjustment
Segment Reporting Information [Line Items]
Restructuring, exit and other charges	1,370	0	1,370	0
Asia
Segment Reporting Information [Line Items]
Net sales	58,359	60,231	172,676	195,984
Intersegment sales	5,575	12,823	17,617	28,492
Operating earnings by segment	657	627	858	4,475
Restructuring, exit and other charges	389	353	1,150	1,014
Asia | Inventory Adjustment
Segment Reporting Information [Line Items]
Restructuring, exit and other charges	$ 0	$ 0	$ 0	$ 526

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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