Fair Value Measurements and Risk - Narrative (Details) € in Millions	Sep. 30, 2017 EUR (€) Currency country	Feb. 03, 2015 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of countries in which entity operates | country	60
Number of currencies used | Currency	30
Deferred intercompany royalties designated as hedging instrument	€ 39.0
Term Loan B (EUR)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan principal designated as hedging instrument	80.1
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total contract value | $		$ 250,000,000
Fixed interest rate (percent)		2.393%
Currency Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cross-currency swaps	€ 170.0