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Financial Instruments, Hedging Activities and Fair Value Measurements (Details)
€ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2018
EUR (€)
Dec. 31, 2018
USD ($)
Jun. 30, 2018
EUR (€)
Jun. 30, 2018
USD ($)
Dec. 31, 2017
EUR (€)
Dec. 31, 2017
USD ($)
Dec. 31, 2013
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Adjustments to contingent consideration   $ 3.0                
Payment for Contingent Consideration Liability, Financing Activities $ 8.9                  
Number Of Interest Rate Swaps               4 4  
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax 2.4 0.9 $ 2.0              
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 0.1                  
2023 Euro Term Loan [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Notional Amount | €               € 388.0    
Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Available-for-sale securities         $ 0.7       $ 4.3  
Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Contingent consideration, fair value         0.0       8.9  
Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Available-for-sale securities         0.7       4.3  
Fair Value, Inputs, Level 1 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Contingent consideration, fair value         0.0       0.0  
Fair Value, Inputs, Level 2 [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net (28.1) 2.0                
Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Available-for-sale securities         0.0       0.0  
Fair Value, Inputs, Level 2 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Contingent consideration, fair value         0.0       0.0  
Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Available-for-sale securities         0.0       0.0  
Fair Value, Inputs, Level 3 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Contingent consideration, fair value         0.0       8.9  
Interest Rate Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Notional Amount             $ 475.0      
Derivative, Number of Instruments Held           3 3      
Derivative, Fixed Interest Rate           2.72% 2.72%      
Currency Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Notional Amount       € 416.6 $ 475.0 € 387.2 $ 475.0      
Derivative, Number of Instruments Held       3 3 3 3      
Derivative, Fixed Interest Rate       1.44% 1.44% 1.95% 1.95%      
Derivative interest rate of hedged item       4.47% 4.47% 4.47% 4.47%      
Derivative, Cost of Hedge Net of Cash Received 22.5                  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         $ 4.5       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         1.4       1.2  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       2.6  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 1 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 1 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 2 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         4.5       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         1.4       1.2  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 2 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       2.6  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 3 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 3 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         2.9       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         2.9       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         14.1       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         8.8       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         14.1       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         8.8       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 3 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 3 [Member] | Other Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.7  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.7  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member] | Prepaid Expenses and Other Current Assets                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Asset         0.0       0.0  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member] | Accrued Liabilities [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Liability         0.0       0.0  
Euro Term Loan Due 2020 [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Cap Interest Rate                   1.50%
Derivative, Notional Amount                   $ 300.0
Euro Term Loan Due 2020 [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instrument, Premium Paid                   $ 3.1
2024 Dollar Senior Notes [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         474.9       524.4  
2024 Dollar Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2024 Dollar Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         474.9       524.4  
2024 Dollar Senior Notes [Member] | Fair Value, Inputs, Level 3 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2024 Euro Senior Notes [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         381.1       427.7  
2024 Euro Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2024 Euro Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         381.1       427.7  
2024 Euro Senior Notes [Member] | Fair Value, Inputs, Level 3 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2025 Euro Senior Notes [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         497.5       571.8  
2025 Euro Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2025 Euro Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         497.5       571.8  
2025 Euro Senior Notes [Member] | Fair Value, Inputs, Level 3 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Payable, Fair Value Disclosure         0.0       0.0  
2024 Dollar Term Loans [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         2,276.1       1,967.4  
2024 Dollar Term Loans [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         0.0       0.0  
2024 Dollar Term Loans [Member] | Fair Value, Inputs, Level 2 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         2,276.1       1,967.4  
2024 Dollar Term Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         0.0       $ 0.0  
2024 Dollar Term Loans [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Cap Interest Rate               1.50% 1.50%  
Derivative, Notional Amount                 $ 850.0  
2023 Euro Term Loan [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Cap Interest Rate               1.25% 1.25%  
Derivative Instrument, Premium Paid                 $ 0.6  
2023 Euro Term Loan [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         0.0       475.5  
2023 Euro Term Loan [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         0.0       0.0  
2023 Euro Term Loan [Member] | Fair Value, Inputs, Level 2 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         0.0       475.5  
2023 Euro Term Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Long-term Debt [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Loans Payable, Fair Value Disclosure         $ 0.0       0.0  
Cash Flow Hedging [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax (7.3) 1.8 2.0              
Cash Flow Hedging [Member] | Interest Rate Cap [Member] | Fair Value, Inputs, Level 2 [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net (3.4) 2.0                
Cash Flow Hedging [Member] | Interest Rate Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax 4.3 0.0 0.0              
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 3.0 0.0                
Cash Flow Hedging [Member] | Currency Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax (37.1) 0.0 0.0              
Net Investment Hedging [Member] | Currency Swap [Member] | Fair Value, Inputs, Level 2 [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net (27.7) 0.0                
Interest Expense [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net (7.9) 11.8 4.3              
Interest Expense [Member] | Foreign Exchange Contract [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net (7.9) 11.2 4.3              
Interest Expense [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net 0.0 0.6 0.0              
Interest Expense [Member] | Cash Flow Hedging [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net (1.9) (2.7) 7.1              
Interest Expense [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 1.3 0.0 0.0              
Interest Expense [Member] | Cash Flow Hedging [Member] | Currency Swap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net $ (9.4) $ 0.0 $ 0.0              
December 31, 2019 [Member] | 2024 Dollar Term Loans [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Notional Amount                 600.0  
Derivative Instrument, Deferred Premium                 8.6  
December 31, 2021 [Member] | 2024 Dollar Term Loans [Member] | Interest Rate Cap [Member]                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Derivative, Notional Amount                 250.0  
Derivative Instrument, Deferred Premium                 $ 8.1