Leases (Details) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Assets and Liabilities, Lessee [Abstract]
Operating lease ROU assets		$ 98.4		$ 97.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets, Noncurrent		Other Assets, Noncurrent
Finance lease ROU assets	[1]	$ 7.2		$ 6.9
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	[1]	Property, Plant and Equipment, Net		Property, Plant and Equipment, Net
Operating lease liabilities, current		$ 19.8		$ 18.0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Current		Other Liabilities, Current
Operating lease liabilities, noncurrent		$ 80.2		$ 80.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Noncurrent		Other Liabilities, Noncurrent
Finance lease liabilities, current		$ 0.5		$ 0.5
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Long-Term Debt and Lease Obligation, Current		Long-Term Debt and Lease Obligation, Current
Finance lease liabilities, noncurrent		$ 2.2		$ 2.2
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Long-Term Debt and Lease Obligation		Long-Term Debt and Lease Obligation
Accumulated amortization		$ 4.5		$ 4.2
Lease, Cost [Abstract]
Operating lease expense	[2]	9.7	$ 6.9
Finance lease expense: Depreciation of ROU assets		0.1	0.1
Finance lease expense: Interest on lease liabilities		0.0	0.0
Total lease expense		9.8	7.0
Short-term lease expense		$ 2.4	$ 1.3

[1] Finance right of use (“ROU”) assets were recorded net of accumulated amortization of $4.5 million and $4.2 million as of June 30, 2025 and March 31, 2025, respectively.

[2] For the three months ended June 30, 2025 and 2024, operating lease expense included short-term lease expense of $2.4 million and $1.3 million, respectively. Variable lease expense was not significant.