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Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Information [Abstract]        
Non-disclosure of reportable segments     true  
Net sales $ 738.9 $ 658.0 $ 1,421.7 $ 1,319.5
Cost of sales 574.0 492.4 1,091.4 991.3
Gross profit 164.9 165.6 330.3 328.2
Selling, general and administrative expenses 84.2 85.8 169.1 168.6
Restructuring expenses 3.1 4.5 7.9 9.9
Impairment charge 4.1   4.1  
Operating income 73.5 75.3 149.2 149.7
Climate Solutions        
Segment Information [Abstract]        
Net sales 454.1 366.4 851.4 723.6
Performance Technologies        
Segment Information [Abstract]        
Net sales 284.8 291.6 570.3 595.9
Operating segments        
Segment Information [Abstract]        
Net sales 740.7 663.9 1,423.6 1,330.2
Operating segments | Climate Solutions        
Segment Information [Abstract]        
Net sales 454.4 366.4 851.8 723.7
Cost of sales 342.4 260.1 626.9 516.6
Gross profit 112.0 106.3 224.9 207.1
Selling, general and administrative expenses 47.4 40.1 92.1 80.9
Restructuring expenses 2.4 1.5 3.7 1.7
Operating income 62.2 64.7 129.1 124.5
Operating segments | Performance Technologies        
Segment Information [Abstract]        
Net sales 286.3 297.5 571.8 606.5
Cost of sales 232.2 237.4 465.8 482.9
Gross profit 54.1 60.1 106.0 123.6
Selling, general and administrative expenses 19.7 26.3 41.6 53.1
Restructuring expenses 0.6 3.0 4.1 8.2
Impairment charge 4.1   4.1  
Operating income 29.7 30.8 56.2 62.3
Inter-segment Sales        
Segment Information [Abstract]        
Net sales 1.8 5.9 1.9 10.7
Inter-segment Sales | Climate Solutions        
Segment Information [Abstract]        
Net sales 0.3   0.4 0.1
Inter-segment Sales | Performance Technologies        
Segment Information [Abstract]        
Net sales 1.5 5.9 1.5 10.6
Corporate and eliminations        
Segment Information [Abstract]        
Net sales (1.8) (5.9) (1.9) (10.7)
Cost of sales (0.6) (5.1) (1.3) (8.2)
Gross profit (1.2) (0.8) (0.6) (2.5)
Selling, general and administrative expenses 17.1 19.4 35.4 34.6
Restructuring expenses 0.1   0.1  
Operating income $ (18.4) $ (20.2) $ (36.1) $ (37.1)