Other Income and Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Other Income and Expense [Abstract]
Interest income		$ 0.4	$ 0.5	$ 0.4
Foreign currency transactions		(1.4)	0.6	(2.4)
Net periodic benefit cost	[1]	(1.1)	(3.3)	(3.0)
Equity in earnings of non-consolidated affiliate	[2]	0.0	0.0	0.2
Total other expense - net		$ (2.1)	$ (2.2)	(4.8)
Nikkei Heat Exchanger Company, Ltd [Member]
Other Income and Expenses [Abstract]
Gain on sale of ownership interest				$ 0.1

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

[2] During fiscal 2020, the Company sold its ownership interest in Nikkei Heat Exchanger Company, Ltd. As a result of the sale, the Company recorded a gain of $0.1 million, which is included within the fiscal 2020 amount.  See Note 1 for additional information.