Leases (Details) - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Lease Assets and Liabilities [Abstract]
Operating lease ROU assets		$ 52.1
Operating lease ROU assets, Statement of Financial Position [Extensible List]		Other Assets, Noncurrent
Finance lease ROU assets	[1]	$ 7.7	$ 8.3
Finance lease ROU assets, Statement of Financial Position [Extensible List]		Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Operating lease liabilities, current		$ 12.7
Operating lease liabilities, current, Statement of Financial Position [Extensible List]		Other Liabilities, Current
Operating lease liabilities, noncurrent		$ 41.2	$ 44.8
Operating lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Finance lease liabilities, current		$ 0.4	$ 0.4
Finance lease liabilities, current, Statement of Financial Position [Extensible List]		Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Finance lease liabilities, noncurrent		$ 2.8	$ 3.2
Finance lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
Accumulated amortization		$ 2.8	$ 2.4
Components of Lease Expense [Abstract]
Operating lease expense	[2]	20.0	19.5	$ 21.2
Finance lease expense [Abstract]
Depreciation of ROU assets		0.5	0.5	0.5
Interest on lease liabilities		0.2	0.2	0.2
Total lease expense		20.7	20.2	21.9
Short-term lease expense		4.2	3.5	4.1
Cash paid for amounts included in measurement of lease liabilities [Abstract]
Operating cash flows for operating leases		15.7	14.2	14.7
Financing cash flows for finance leases		0.6	0.6	0.5
ROU assets obtained in exchange for lease liabilities [Abstract]
Operating leases		7.8	9.8	9.0
Finance leases		$ 0.1	$ 0.1	$ 0.2
Weighted-average remaining lease term [Abstract]
Operating leases		8 years 6 months	6 years 10 months 24 days
Finance leases		6 years 9 months 18 days	7 years 9 months 18 days
Weighted-average discount rate [Abstract]
Operating leases		3.40%	3.30%
Finance leases		4.60%	4.70%
Maturity of Operating Lease Liabilities [Abstract]
2023		$ 14.2
2024		10.2
2025		7.8
2026		6.8
2027		6.2
2028 and beyond		16.4
Total lease payments		61.6
Less: Interest		(7.7)
Present value of lease liabilities		53.9
Maturities of Finance Lease Liabilities [Abstract]
2023		0.6
2024		0.6
2025		0.6
2026		0.5
2027		0.5
2028 and beyond		0.9
Total lease payments		3.7
Less: Interest		(0.5)
Present value of lease liabilities		$ 3.2
Assets Held for Sale [Member]
Lease Assets and Liabilities [Abstract]
Operating lease ROU assets			$ 6.1
Liabilities Held for Sale [Member]
Lease Assets and Liabilities [Abstract]
Operating lease liabilities, current			6.1
Other Noncurrent Assets [Member]
Lease Assets and Liabilities [Abstract]
Operating lease ROU assets			54.1
Other Current Liabilities [Member]
Lease Assets and Liabilities [Abstract]
Operating lease liabilities, current			$ 11.2
Minimum [Member]
Significant Accounting Policy [Abstract]
Remaining lease term		1 year
Maximum [Member]
Significant Accounting Policy [Abstract]
Remaining lease term		12 years

[1] Finance lease ROU assets were recorded net of accumulated amortization of $2.8 million and $2.4 million as of March 31, 2022 and 2021, respectively.

[2] In fiscal 2022, 2021, and 2020 operating lease expense included short-term lease expense of $4.2 million, $3.5 million, and $4.1 million respectively. Variable lease expense was not significant.