v3.26.1
Business Segments - Schedule of Financial Information by Reportable Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting [Line Items]      
Net Sales by segment to unaffiliated customers $ 3,751,376 $ 3,617,579 $ 3,581,871
Other segment items 3,344,105 3,244,664 3,248,900
Segment income 407,271 372,915 332,971
Less:      
Inventory adjustment relating to exit activities (2,268) (3,609) (20,173)
Restructuring and other exit charges (50,808) (14,428) (28,103)
(Gain) loss on assets held for sale (1,187) 4,634 0
Impairment of intangible assets 402 880 13,619
Impairment of indefinite-lived intangibles 402 0 13,619
Legal proceedings charge, net     3,705
Amortization of intangible assets 33,442 31,805 27,993
Accelerated stock compensation 10,759    
Other 17,041 8,845 5,067
Total operating earnings (2) 426,460 464,686 351,570
Depreciation 80,116 69,071 64,028
Capital Expenditures 80,074 121,038 86,437
Property, plant, and equipment, net 593,002 592,433  
Operating Segments      
Less:      
Amortization of intangible assets     27,994
Corporate Other      
Segment Reporting [Line Items]      
Net Sales by segment to unaffiliated customers 4,172 8,805 0
Less:      
Total operating earnings (2) 132,722 155,092 117,260
Depreciation 100 32 101
Capital Expenditures 2,073 12,097 100
Energy Systems      
Less:      
Property, plant, and equipment, net 143,634 198,841  
Energy Systems | Americas | Operating Segments      
Segment Reporting [Line Items]      
Net Sales by segment to unaffiliated customers 1,651,186 1,531,169 1,590,023
Other segment items 1,505,747 1,427,963 1,503,068
Segment income 145,439 103,206 86,955
Less:      
Inventory adjustment relating to exit activities 0 (274) (17,075)
Restructuring and other exit charges (23,467) (5,994) (8,840)
(Gain) loss on assets held for sale 0 0  
Impairment of intangible assets 402    
Impairment of indefinite-lived intangibles     13,619
Legal proceedings charge, net     3,705
Amortization of intangible assets 23,354 23,620 24,503
Accelerated stock compensation 5,383    
Other 7,468 588 3,740
Total operating earnings (2) 85,365 72,730 15,473
Depreciation 31,207 26,823 24,966
Capital Expenditures 33,429 39,167 33,626
Motive Power      
Less:      
Property, plant, and equipment, net 110,750 144,076  
Motive Power | EMEA | Operating Segments      
Segment Reporting [Line Items]      
Net Sales by segment to unaffiliated customers 1,430,931 1,484,117 1,456,181
Other segment items 1,231,124 1,251,362 1,241,531
Segment income 199,807 232,755 214,650
Less:      
Inventory adjustment relating to exit activities (2,268) 0 0
Restructuring and other exit charges (23,930) (5,719) (11,697)
(Gain) loss on assets held for sale (1,187) 4,634  
Impairment of intangible assets 0    
Impairment of indefinite-lived intangibles     0
Legal proceedings charge, net     0
Amortization of intangible assets 492 685 683
Accelerated stock compensation 3,532    
Other 3,844 1,585 1,032
Total operating earnings (2) 166,928 220,132 201,238
Depreciation 27,092 23,010 23,007
Capital Expenditures 21,046 22,758 17,115
Specialty      
Less:      
Property, plant, and equipment, net 324,584 236,861  
Specialty | Asia | Operating Segments      
Segment Reporting [Line Items]      
Net Sales by segment to unaffiliated customers 665,087 593,488 535,667
Other segment items 603,062 556,534 504,301
Segment income 62,025 36,954 31,366
Less:      
Inventory adjustment relating to exit activities 0 (3,335) (3,098)
Restructuring and other exit charges (3,411) (2,715) (7,566)
(Gain) loss on assets held for sale 0 0  
Impairment of intangible assets 0    
Impairment of indefinite-lived intangibles     0
Legal proceedings charge, net     0
Amortization of intangible assets 9,596 7,500 2,808
Accelerated stock compensation 1,844    
Other 5,729 6,672 295
Total operating earnings (2) 41,445 16,732 17,599
Depreciation 21,717 19,206 15,954
Capital Expenditures 23,526 47,016 $ 35,596
Other      
Less:      
Property, plant, and equipment, net $ 14,034 $ 12,655