Leases - Supplemental Cash Flow and Other Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 150.9	$ 135.2
Operating cash flows for finance leases	2.2	2.0
Financing cash flows for finance leases	7.1	5.7
Supplemental non-cash changes to lease liabilities from obtaining or remeasuring right of use assets	$ (127.9)	$ 224.3
Weighted average remaining lease term - operating leases	9 years 10 months 24 days
Weighted average remaining lease term - finance leases	6 years 9 months 18 days
Weighted average discount rate - operating leases	13.20%
Weighted average discount rate - finance leases	5.50%