Debt - Summary of Debt and Capital Leases Outstanding (Details) - USD ($)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt and capital lease obligations	$ 5,399,600,000	$ 5,447,200,000
Less: current installments of long-term debt and revolving credit facilities	(9,700,000)	(10,100,000)
Total long-term debt and capital lease obligations	5,389,900,000	5,437,100,000
Senior Notes
Debt Instrument [Line Items]
Unamortized discount (premium) and debt issuance costs, net	$ 31,300,000	$ 35,500,000
Weighted average interest rate		6.50%
Senior Notes | USD Senior Notes, due 2022
Debt Instrument [Line Items]
Stated interest rate	6.50%
Total debt and capital lease obligations	$ 1,088,400,000	$ 1,086,100,000
Debt face amount	$ 1,100,000,000
Senior Notes | EUR Senior Notes, due 2023
Debt Instrument [Line Items]
Stated interest rate	6.00%
Total debt and capital lease obligations	$ 402,100,000	415,100,000
Senior Notes | USD Senior Notes, Due 2025
Debt Instrument [Line Items]
Stated interest rate	5.875%
Total debt and capital lease obligations	$ 784,500,000	783,200,000
Domestic Line of Credit | First Lien Credit Facility - U.S. Dollar Term Loans, due 2020
Debt Instrument [Line Items]
Stated interest rate	3.50%
Total debt and capital lease obligations	$ 623,300,000	620,400,000
Domestic Line of Credit | First Lien Credit Facility - U.S. Dollar Term Loans, due 2020 | LIBOR
Debt Instrument [Line Items]
Spread on variable rate (as a percent)	2.50%
Domestic Line of Credit | First Lien Credit Facility - U.S. Dollar Term Loans, due 2021, 4.00% or LIBOR Plus 3.00%
Debt Instrument [Line Items]
Stated interest rate	4.00%
Total debt and capital lease obligations	$ 1,123,800,000	1,121,200,000
Domestic Line of Credit | First Lien Credit Facility - U.S. Dollar Term Loans, due 2021, 4.00% or LIBOR Plus 3.00% | LIBOR
Debt Instrument [Line Items]
Spread on variable rate (as a percent)	3.00%
Foreign Line of Credit | First Lien Credit Facility - EURO Term Loans, due 2020
Debt Instrument [Line Items]
Stated interest rate	3.25%
Total debt and capital lease obligations	$ 673,600,000	694,300,000
Foreign Line of Credit | First Lien Credit Facility - EURO Term Loans, due 2020 | EURIBOR
Debt Instrument [Line Items]
Spread on variable rate (as a percent)	2.50%
Foreign Line of Credit | First Lien Credit Facility - EURO Term Loans, due 2021, 3.5% or EURIBOR Plus 2.75%
Debt Instrument [Line Items]
Stated interest rate	3.50%
Total debt and capital lease obligations	$ 693,400,000	716,000,000.0
Foreign Line of Credit | First Lien Credit Facility - EURO Term Loans, due 2021, 3.5% or EURIBOR Plus 2.75% | EURIBOR
Debt Instrument [Line Items]
Spread on variable rate (as a percent)	2.75%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt and capital lease obligations	$ 0	0
Line of Credit | Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Spread on variable rate (as a percent)	3.00%
Line of Credit | First Lien Credit Facility Term Loans
Debt Instrument [Line Items]
Unamortized discount (premium) and debt issuance costs, net	$ 25,200,000	$ 33,300,000
Weighted average interest rate	4.70%	4.50%
Other
Debt Instrument [Line Items]
Total debt and capital lease obligations	$ 10,500,000	$ 10,900,000