Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 233.9
Goodwill, ending balance	268.2
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	292.1		$ 231.1
Accumulated Amortization	(93.3)		(84.4)
Net Intangible Assets	198.8		146.7
Amortization expense	5.7	$ 6.9
Estimated Future Amortization Expense [Abstract]
2026	15.0
2027	19.0
2028	19.0
2029	19.0
2030	18.0
2031	17.0
Climate Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	233.9
Acquisitions	26.8
Effect of exchange rate changes	7.5
Goodwill, ending balance	268.2
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	191.9		145.4
Accumulated Amortization	(53.8)		(47.5)
Net Intangible Assets	138.1		97.9
Intangible assets acquired	39.8
Trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	66.7		53.1
Accumulated Amortization	(22.4)		(21.2)
Net Intangible Assets	44.3		31.9
Intangible assets acquired	12.5
Acquired technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	33.5		32.6
Accumulated Amortization	(17.1)		(15.7)
Net Intangible Assets	16.4		$ 16.9
L.B. White
Goodwill [Roll Forward]
Acquisitions	25.7
AbsolutAire
Goodwill [Roll Forward]
Acquisitions	$ 1.1