Debt and Credit Facilities - Total Debt Outstanding (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Nov. 26, 2019
Debt Instrument [Line Items]
Short-term borrowings	$ 7.4	$ 98.9
Current portion of long-term debt	21.8	16.7
Total current debt	29.2	115.6
Other	26.4	30.9
Total long-term debt, less current portion	3,710.1	3,698.6
Total debt	3,739.3	3,814.2
Finance lease liability, current	10.0	10.4
Finance lease liability, noncurrent	25.3	28.7
Unamortized discounts ands issuance costs	$ 21.4	$ 24.6
Short-term debt, weighted average interest rate	2.10%	5.00%
Long-term debt, weighted average interest rate	4.40%	4.80%
Revolving Credit Facility
Debt Instrument [Line Items]
Short-term borrowings		$ 89.0
Line of Credit
Debt Instrument [Line Items]
Short-term borrowings		9.9
Senior Notes due December 2022
Debt Instrument [Line Items]
Debt interest rate	4.875%
Senior notes	$ 422.6	421.9
Senior Notes due April 2023
Debt Instrument [Line Items]
Debt interest rate	5.25%
Senior notes	$ 422.7	422.0
Senior Notes due September 2023
Debt Instrument [Line Items]
Debt interest rate	4.50%
Senior notes	$ 467.9	445.6
Senior Notes due December 2024
Debt Instrument [Line Items]
Debt interest rate	5.125%
Senior notes	$ 422.4	421.9
Senior Notes due September 2025
Debt Instrument [Line Items]
Debt interest rate	5.50%
Senior notes	$ 397.7	397.4
Senior Notes due December 2027
Debt Instrument [Line Items]
Debt interest rate	4.00%		4.00%
Senior notes	$ 420.7	420.4
Senior Notes due July 2033
Debt Instrument [Line Items]
Debt interest rate	6.875%
Senior notes	$ 445.8	445.7
Term Loan A due August 2022
Debt Instrument [Line Items]
Term loans	474.6	474.6
Term Loan A due July 2023
Debt Instrument [Line Items]
Term loans	$ 209.3	$ 218.2