Leases (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jul. 31, 2024	Mar. 31, 2024
Lease Assets and Liabilities [Abstract]
Operating lease ROU assets		$ 91.4		$ 91.4			$ 76.0
Operating lease ROU assets, Statement of Financial Position [Extensible List]		Other noncurrent assets		Other noncurrent assets			Other noncurrent assets
Finance lease ROU assets	[1]	$ 7.3		$ 7.3			$ 6.5
Finance lease ROU assets, Statement of Financial Position [Extensible List]	[1]	Property, plant and equipment - net		Property, plant and equipment - net			Property, plant and equipment - net
Operating lease liabilities, current		$ 17.4		$ 17.4			$ 15.3
Operating lease liabilities, current, Statement of Financial Position [Extensible List]		Other current liabilities		Other current liabilities			Other current liabilities
Operating lease liabilities, noncurrent		$ 75.4		$ 75.4			$ 62.1
Operating lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Other noncurrent liabilities		Other noncurrent liabilities			Other noncurrent liabilities
Finance lease liabilities, current		$ 0.5		$ 0.5			$ 0.4
Finance lease liabilities, current, Statement of Financial Position [Extensible List]		Long-term debt - current portion		Long-term debt - current portion			Long-term debt - current portion
Finance lease liabilities, noncurrent		$ 2.5		$ 2.5			$ 1.9
Finance lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Long-term debt		Long-term debt			Long-term debt
Accumulated amortization		$ 4.0		$ 4.0			$ 3.7
Components of Lease Expense [Abstract]
Operating lease expense	[2]	7.7	$ 5.6	14.6	$ 11.5
Finance lease expense: Depreciation of ROU assets		0.2	0.2	0.3	0.3
Finance lease expense: Interest on lease liabilities		0.1	0.1	0.1	0.1
Total lease expense		8.0	5.9	15.0	11.9
Short-term lease expense		$ 1.8	$ 1.4	$ 3.1	$ 2.9
Manufacturing Facility [Member]
Leases [Abstract]
Term of operating lease						10 years
Total future lease payments						$ 12.0
Manufacturing Facility [Member] | Climate Solutions
Leases [Abstract]
Term of operating lease		10 years		10 years

[1] Finance right of use (“ROU”) assets were recorded net of accumulated amortization of $4.0 million and $3.7 million as of September 30, 2024 and March 31, 2024, respectively.

[2] For three and six months ended September 30, 2024, operating lease expense included short-term lease expense of $1.8 million and $3.1 million, respectively. For three and six months ended September 30, 2023, operating lease expense included short-term lease expense of $1.4 million and $2.9 million, respectively. Variable lease expense was not significant.