Leases - Schedule of Components of Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 14.0	$ 35.6
Short-term lease	4.7	8.8
Variable lease	3.6	7.8
Operating lease cost	22.3	52.2
Amortization of leased assets	1.5	0.7
Interest on lease liabilities	0.3	0.2
Lease impairment	0.1	77.5
Net lease cost	$ 24.2	$ 130.6