Goodwill and Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Jul. 01, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Goodwill [Abstract]
Goodwill, beginning balance				$ 170.7
Effect of exchange rate changes				(0.6)
Goodwill, ending balance		$ 170.1		170.1
Intangible Assets [Abstract]
Gross carrying value		137.5		137.5		$ 138.2
Accumulated amortization		(41.5)		(41.5)		(37.6)
Net intangible assets		96.0		96.0		100.6
Amortization expense		2.1	$ 2.1	4.2	$ 4.2
Estimated Future Amortization Expense [Abstract]
Remainder of fiscal 2022		4.2		4.2
2023		8.0		8.0
2024		8.0		8.0
2025		8.0		8.0
2026		8.0		8.0
2027		8.0		8.0
BHVAC [Member]
Goodwill [Abstract]
Goodwill reassigned	$ 32.5
Goodwill, beginning balance				47.0
Effect of exchange rate changes				(0.5)
Goodwill, ending balance		46.5		46.5
CIS [Member]
Goodwill [Abstract]
Goodwill reassigned	$ (32.5)
Goodwill, beginning balance				123.7
Effect of exchange rate changes				(0.1)
Goodwill, ending balance		123.6		123.6
CIS [Member] | One Reporting Unit Within CIS Segment [Member]
Goodwill [Abstract]
Goodwill, ending balance		$ 61.0		$ 61.0
CIS [Member] | One Reporting Unit Within CIS Segment [Member] | Maximum [Member]
Goodwill [Abstract]
Percentage of excess fair value over book value		8.00%		8.00%
Customer Relationships [Member]
Intangible Assets [Abstract]
Gross carrying value		$ 62.5		$ 62.5		62.8
Accumulated amortization		(18.7)		(18.7)		(16.9)
Net intangible assets		43.8		43.8		45.9
Trade Names [Member]
Intangible Assets [Abstract]
Gross carrying value		51.3		51.3		51.5
Accumulated amortization		(12.6)		(12.6)		(11.4)
Net intangible assets		38.7		38.7		40.1
Acquired Technology [Member]
Intangible Assets [Abstract]
Gross carrying value		23.7		23.7		23.9
Accumulated amortization		(10.2)		(10.2)		(9.3)
Net intangible assets		$ 13.5		$ 13.5		$ 14.6