v3.26.1
Pension and Employee Benefit Plans, Cost Components of Pension Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Net Periodic Benefit Cost      
Pension termination charge $ 116.1 $ 0.0 $ 0.0
Net periodic benefit cost [1] 3.5 4.6 3.3
Other changes in benefit obligation recognized in other comprehensive income:      
Pension termination charge 116.1 0.0 0.0
U.S. Pension Plans      
Net Periodic Benefit Cost      
Service cost 0.2 0.2 0.2
Interest cost 6.5 9.0 9.3
Expected return on plan assets (5.8) (8.7) (10.3)
Amortization of unrecognized net loss 3.2 4.7 4.7
Settlements (0.1) [2] (0.1) (0.1)
Pension termination charge 116.1 0.0 0.0
Net periodic benefit cost 120.1 5.1 3.8
Other changes in benefit obligation recognized in other comprehensive income:      
Net actuarial gain 3.2 (8.7) 1.7
Amortization of net actuarial loss 3.1 [3] 4.6 3.9 [3]
Pension termination charge 116.1 0.0 0.0
Total recognized in other comprehensive income $ 122.4 $ (4.1) 5.6
U.S. Pension Plans | Non-U.S Plans | Germany Automotive Businesses      
Other changes in benefit obligation recognized in other comprehensive income:      
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 and the $116.1 million pension termination charge recorded in fiscal 2026. See Note 18 for additional information.
[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. See Note 2 for additional information on the sale of these businesses.