Pensions (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2026
Net Periodic Benefit Cost [Abstract]
Net periodic benefit cost	[1]	$ 1.3	$ 1.2
Pension
Net Periodic Benefit Cost [Abstract]
Service cost		0.0	0.0
Interest cost		2.4	2.3
Expected return on plan assets		(2.2)	(2.2)
Amortization of unrecognized net loss		1.2	1.2
Net periodic benefit cost		1.4	$ 1.3
Pension | UNITED STATES
Defined Benefit Plan, Additional Information [Abstract]
Contribution U.S. pension plan		0.0
Pension | UNITED STATES | Minimum
Termination of U.S. Pension Plans [Abstract]
Expected employer contribution during fiscal 2026		17.0
Pension | UNITED STATES | Maximum
Termination of U.S. Pension Plans [Abstract]
Expected employer contribution during fiscal 2026		$ 22.0
Pension | UNITED STATES | Termination plan | Minimum
Termination of U.S. Pension Plans [Abstract]
Non-cash pension settlement charges				$ (115.0)
Pension | UNITED STATES | Termination plan | Maximum
Termination of U.S. Pension Plans [Abstract]
Non-cash pension settlement charges				$ (125.0)

[1] Net periodic benefit cost for the Company’s pension and postretirement plans is exclusive of service cost.