Fair Value Measurements and Risk - Narrative (Details) € in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 EUR (€) Currency country	Jun. 30, 2020 USD ($) Currency country	Nov. 05, 2018 EUR (€)	Nov. 05, 2018 USD ($)	Apr. 03, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of countries in which entity operates | country					60	60
Number of currencies used | Currency					30	30
Maturities in which forward contracts are designated as cash flow hedges or forecasted repayments of intercompany loans			36 months
Currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount						$ 55.1
Variable-to-fixed cross-currency swaps | 2018 Credit Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount | €							€ 525.9
Derivative, Amount of Hedged Item								$ 600.0
Fixed interest rate							1.785%	1.785%
Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount									$ 100.0
Derivative, Amount of Hedged Item									$ 100.0
Fixed interest rate									2.775%
Net Investment Hedging
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	$ 0.0
Net Investment Hedging | Currency Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on Components Excluded from Assessment of Net Investment Hedge Effectiveness	$ 0.8	$ 0.8	$ 1.7	$ 1.6
Derivative, Notional Amount | €					€ 170.0