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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 |

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