Leases (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets and Liabilities, Lessee [Abstract]
Operating Lease, Right-of-Use Asset	$ 85.3	$ 77.8	$ 70.8
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	3.7	7.1
Operating lease liabilities - current portion	18.4	15.5
Operating lease liabilities - noncurrent portion	69.2	65.5
Finance lease liabilities - current portion	$ 2.7	$ 3.1
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Debt Current Excluding Operating Lease Obligations	Debt Current Excluding Operating Lease Obligations
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term Debt, Excluding Current Maturities	Long-term Debt, Excluding Current Maturities
Finance lease liabilities - noncurrent portion	$ 1.0	$ 4.1