Lease Obligations - Operating Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Leased Assets [Line Items]
Operating leases, additions	$ 172.9	$ 28.0	$ 103.3
Operating leases, expense	107.7	113.0	114.5
Operating leases, variable lease costs	10.1	10.0	10.4
Operating leases, short-term leases, expense	494.7	$ 312.0	$ 448.2
2021 Acquisitions
Operating Leased Assets [Line Items]
Operating leases, additions	$ 149.3