Derivative and Other Financial Instruments (Schedule of Fair Value for Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Quoted prices in active markets for identical assets (Level 1) [Member] \| Reportable Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 77.2	$ 108.6
Restricted cash	6.1	7.0
Quoted prices in active markets for identical assets (Level 1) [Member] \| Reportable Value Measurement [Member] \| Term Loan Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan	1,067.5	1,070.2
Quoted prices in active markets for identical assets (Level 1) [Member] \| Reportable Value Measurement [Member] \| 2023 Junior Priority Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	393.3	392.5
Quoted prices in active markets for identical assets (Level 1) [Member] \| Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	77.2	108.6
Restricted cash	6.1	7.0
Quoted prices in active markets for identical assets (Level 1) [Member] \| Estimate of Fair Value Measurement [Member] \| Term Loan Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan	1,091.0	1,088.2
Quoted prices in active markets for identical assets (Level 1) [Member] \| Estimate of Fair Value Measurement [Member] \| 2023 Junior Priority Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	419.7	410.1
Significant other observable inputs (Level 2) [Member] \| Reportable Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	325.5	253.7
Significant other observable inputs (Level 2) [Member] \| Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	325.5	253.7
Significant unobservable inputs (Level 3) [Member] \| Reportable Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchangeable Notes	44.7	44.6
Significant unobservable inputs (Level 3) [Member] \| Reportable Value Measurement [Member] \| Zhenjiang term loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Zhenjiang Term Loans	154.0	157.2
Significant unobservable inputs (Level 3) [Member] \| Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchangeable Notes	60.7	60.7
Significant unobservable inputs (Level 3) [Member] \| Estimate of Fair Value Measurement [Member] \| Zhenjiang term loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Zhenjiang Term Loans	$ 154.4	$ 157.6

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