Debt - Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 06, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 3,360.6		$ 2,729.3
Finance Leases	133.3		134.2
Other	5.7		5.4
Total Long-Term Debt	3,494.0		2,863.5
Less: Current Portion	41.2		41.1
Long-term Debt, Gross And Finance Lease Liability	3,452.8		2,822.4
Less: Unamortized Deferred Debt Issuance Costs	18.3		12.5
Total	3,434.5		2,809.9
Senior Notes | Senior Notes with interest payable semi-annually at 3.50%, effective rate of 3.55%, payable in 2028
Debt Instrument [Line Items]
Long-term debt	$ 450.0		0.0
Stated interest rate	3.50%	3.50%
Effective interest rate	3.55%
Senior Notes | Senior Notes with interest payable semi-annually at 4.75%, effective rate of 4.82%, payable in 2027
Debt Instrument [Line Items]
Long-term debt	$ 300.0		300.0
Stated interest rate	4.75%
Effective interest rate	4.82%
Senior Notes | Senior Notes with interest payable semi-annually at 4.125%, effective rate of 4.17%, payable in 2024
Debt Instrument [Line Items]
Long-term debt	$ 300.0		300.0
Stated interest rate	4.125%
Effective interest rate	4.17%
Senior Notes | Senior Notes with interest payable semi-annually at 4.875%, effective rate of 4.91%, payable in 2022
Debt Instrument [Line Items]
Long-term debt	$ 250.0		250.0
Stated interest rate	4.875%
Effective interest rate	4.91%
Senior Notes | Senior Notes with interest payable semi-annually at 4.75%, effective rate of 4.76%, payable in 2021
Debt Instrument [Line Items]
Long-term debt	$ 425.0		425.0
Stated interest rate	4.75%
Effective interest rate	4.76%
Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 1,387.0		1,396.1
Interest rate at period end	2.45%
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 243.0		$ 52.8
Interest rate at period end	1.93%