Pensions (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Net Periodic Benefit Cost [Abstract]
Net periodic benefit cost	[1]	$ 0.8	$ 0.4	$ 2.5	$ 1.4
Pension [Member]
Net Periodic Benefit Cost [Abstract]
Service cost		0.0	0.1	0.1	0.2
Interest cost		2.3	2.0	7.1	6.0
Expected return on plan assets		(2.5)	(2.9)	(7.7)	(8.7)
Amortization of unrecognized net loss		1.1	1.4	3.4	4.3
Net periodic benefit cost		0.9	$ 0.6	2.9	$ 1.8
Pension [Member] | U.S Plans [Member]
Employer Contributions [Abstract]
Cash contributions by employer				0.0
Expected contribution in fourth quarter of fiscal 2024		$ 0.9		$ 0.9

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