Lease Obligations - Finance Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Finance leases, assets, gross	$ 653.5	$ 563.0
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Property and equipment, net	Property and equipment, net
Finance leases, assets, net	$ 468.5	$ 418.7
Finance leases, assets, depreciation	$ 80.1	$ 68.0	$ 48.6