Leases - Components of Lease Expense and Other Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 153.5
Short-term lease expense	17.6
Variable lease expense	15.8
Total lease expense	186.9
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of operating lease liabilities	150.1
Operating ROU assets obtained in exchange for lease obligations	$ 129.3