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Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 230.9		$ 230.9
Goodwill, ending balance	$ 232.6			232.6
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	228.9			228.9		$ 245.8
Accumulated Amortization	(76.6)			(76.6)		(57.5)
Net Intangible Assets	152.3			152.3		188.3
Amortization expense	6.9		$ 2.1	20.7	$ 6.1
Estimated Future Amortization Expense [Abstract]
2025	7.0			7.0
2026	17.0			17.0
2027	15.0			15.0
2028	15.0			15.0
2029	15.0			15.0
2030	13.0			13.0
Climate Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance		230.9		230.9
Acquisition adjustment		7.4		7.4
Effect of exchange rate changes				(5.7)
Goodwill, ending balance	232.6			232.6
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	144.3			144.3		150.5
Accumulated Amortization	(41.7)			(41.7)		(26.3)
Net Intangible Assets	102.6			102.6		124.2
Trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	52.5			52.5		62.8
Accumulated Amortization	(20.3)			(20.3)		(18.5)
Net Intangible Assets	32.2			32.2		44.3
Acquired technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	32.1			32.1		32.5
Accumulated Amortization	(14.6)			(14.6)		(12.7)
Net Intangible Assets	17.5			17.5		$ 19.8
Scott Springfield Manufacturing
Goodwill [Roll Forward]
Acquisition adjustment		7.4
Goodwill, ending balance	$ 72.6			$ 72.6
Scott Springfield Manufacturing | Trade names
Goodwill [Roll Forward]
Measurement period adjustment to intangible asset		$ (9.6)

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Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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