Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating Leases:
Operating lease ROU assets	$ 41.7	$ 40.5
Operating lease current liabilities	7.7	7.3
Operating lease non-current liabilities	31.5	30.9
Total operating lease liabilities	39.2	38.2
Finance Leases:
Finance Lease Assets	1.0	2.5
Finance lease current liabilities	0.5	1.0
Finance lease non-current liabilities	0.6	1.6
Total finance lease liabilities	$ 1.1	$ 2.6
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses	Accrued expenses
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current maturities of long-term debt	Current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Patterson-Kelley
Finance Leases:
Favorable leasehold interests	$ 6.4	$ 6.6