Leases - Schedule of Components of Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 25.2	$ 60.1	$ 60.8	$ 118.4
Short-term lease	5.4	9.1	14.2	17.9
Variable Lease	1.9	15.3	9.7	28.4
Operating lease cost	32.5	84.5	84.7	164.7
Amortization of leased assets	0.8	0.3	1.5	0.8
Interest on lease liabilities	0.3	0.2	0.5	0.4
Lease impairment	16.7	0.0	94.2	0.0
Net lease cost	$ 50.3	$ 85.0	$ 180.9	$ 165.9