v3.24.1.1.u2
Pension and Employee Benefit Plans, Cost Components of Pension Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Net Periodic Benefit Cost [Abstract]      
Net periodic benefit cost [1] $ 3.3 $ 2.0 $ 1.1
Austrian Air-Cooled Automotive Business [Member]      
Other Changes in Benefit Obligation Recognized in Other Comprehensive Income [Abstract]      
Write-off of net actuarial losses     1.7
Pension Plans [Member]      
Net Periodic Benefit Cost [Abstract]      
Service cost 0.2 0.2 0.3
Interest cost 9.3 8.1 7.3
Expected return on plan assets (10.3) (11.6) (12.9)
Amortization of net actuarial loss 4.7 5.7 6.9
Settlements (0.1) [2] 0.0 0.0
Net periodic benefit cost 3.8 2.4 1.6
Other Changes in Benefit Obligation Recognized in Other Comprehensive Income [Abstract]      
Net actuarial gain 1.7 2.1 11.4
Amortization of net actuarial loss 3.9 [3] 5.7 8.6 [3]
Total recognized in other comprehensive income 5.6 7.8 20.0
Pension Plans [Member] | Austrian Air-Cooled Automotive Business [Member]      
Other Changes in Benefit Obligation Recognized in Other Comprehensive Income [Abstract]      
Write-off of net actuarial losses     1.7
Pension Plans [Member] | Non-U.S Plans [Member] | Maximum [Member]      
Net Periodic Benefit Cost [Abstract]      
Amortization of net actuarial loss 1.0 $ 1.0 $ 1.0
Pension Plans [Member] | Non-U.S Plans [Member] | Germany Automotive Businesses [Member]      
Other Changes in Benefit Obligation Recognized in Other Comprehensive Income [Abstract]      
Write-off of net actuarial gains $ 0.6    
[1] Net periodic benefit cost for the Company’s pension and postretirement plans is exclusive of service cost.
[2] The settlement charges resulted from activity associated with the Company’s non-U.S. pension plans.
[3] The fiscal 2024 amount includes $0.6 million of net actuarial gains written-off as a result of the sale of the Germany automotive businesses. The fiscal 2022 amount includes $1.7 million of net actuarial losses written-off as a result of the sale of the Austrian air-cooled automotive business.  See Note 2 for additional information on the sale of these businesses.