Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 170.7
Effect of exchange rate changes	0.7
Goodwill, ending balance	171.4
Intangible Assets [Abstract]
Gross carrying value	138.8		$ 138.2
Accumulated amortization	(39.8)		(37.6)
Net intangible assets	99.0		100.6
Amortization expense	2.1	$ 2.1
Estimated Future Amortization Expense [Abstract]
Remainder of fiscal 2022	6.4
2023	8.0
2024	8.0
2025	8.0
2026	8.0
2027	8.0
BHVAC [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	14.8
Effect of exchange rate changes	0.0
Goodwill, ending balance	14.8
CIS [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	155.9
Effect of exchange rate changes	0.7
Goodwill, ending balance	156.6
Customer Relationships [Member]
Intangible Assets [Abstract]
Gross carrying value	63.1		62.8
Accumulated amortization	(17.9)		(16.9)
Net intangible assets	45.2		45.9
Trade Names [Member]
Intangible Assets [Abstract]
Gross carrying value	51.7		51.5
Accumulated amortization	(12.1)		(11.4)
Net intangible assets	39.6		40.1
Acquired Technology [Member]
Intangible Assets [Abstract]
Gross carrying value	24.0		23.9
Accumulated amortization	(9.8)		(9.3)
Net intangible assets	$ 14.2		$ 14.6