Leases (Details) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023
Lease Assets and Liabilities [Abstract]
Operating lease ROU assets		$ 57.4		$ 59.1
Operating lease ROU assets, Statement of Financial Position [Extensible List]		Other noncurrent assets		Other noncurrent assets
Finance lease ROU assets	[1]	$ 7.0		$ 7.1
Finance lease ROU assets, Statement of Financial Position [Extensible List]		Property, plant and equipment - net		Property, plant and equipment - net
Operating lease liabilities, current		$ 11.8		$ 11.8
Operating lease liabilities, current, Statement of Financial Position [Extensible List]		Other current liabilities		Other current liabilities
Operating lease liabilities, noncurrent		$ 47.3		$ 48.9
Operating lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Other noncurrent liabilities		Other noncurrent liabilities
Finance lease liabilities, current		$ 0.4		$ 0.4
Finance lease liabilities, current, Statement of Financial Position [Extensible List]		Long-term debt - current portion		Long-term debt - current portion
Finance lease liabilities, noncurrent		$ 2.2		$ 2.3
Finance lease liabilities, noncurrent, Statement of Financial Position [Extensible List]		Long-term debt		Long-term debt
Accumulated amortization		$ 3.3		$ 3.2
Components of Lease Expense [Abstract]
Operating lease expense	[2]	5.9	$ 5.3
Finance lease expense [Abstract]
Depreciation of ROU assets		0.1	0.1
Interest on lease liabilities		0.0	0.0
Total lease expense		6.0	5.4
Short-term lease expense		$ 1.5	$ 1.3

[1] Finance lease right-of-use (“ROU”) assets were recorded net of accumulated amortization of $3.3 million and $3.2 million as of June 30, 2023 and March 31, 2023, respectively.

[2] For the three months ended June 30, 2023 and 2022, operating lease expense included short-term lease expense of $1.5 million and $1.3 million, respectively. Variable lease expense was not significant.