Restructuring Activities (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Restructuring and Repositioning Expenses [Abstract]
Employee severance and related benefits	$ 3.5	$ 22.1	$ 11.7
Other restructuring and repositioning expenses	1.5	2.0	1.7
Total	5.0	24.1	13.4
Changes in Accrued Severance [Roll Forward]
Beginning balance	20.2	4.0
Additions	3.5	22.1
Payments	(12.4)	(5.7)
Reclassified from held for sale	0.0	0.4
Effect of exchange rate changes	(0.7)	(0.6)
Ending balance	10.6	20.2	4.0
Impairment charges (reversals) - net	$ 0.0	(55.7)	166.8
Climate Solutions [Member]
Restructuring and Repositioning Expenses [Abstract]
Employee severance and related benefits			3.7
Changes in Accrued Severance [Roll Forward]
Impairment charges (reversals) - net		0.3
Performance Technologies [Member]
Restructuring and Repositioning Expenses [Abstract]
Employee severance and related benefits		20.3
Changes in Accrued Severance [Roll Forward]
Impairment charges (reversals) - net		$ (56.0)	$ 166.8

Amount of restructuring reserve reclassified to held-for-sale liability.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

+ References

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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