Fair Value Measurements and Risk Fair Value Measurements and Risk - Narrative (Details) € in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 EUR (€) country	Dec. 31, 2019 USD ($) country	Nov. 05, 2018 EUR (€)	Nov. 05, 2018 USD ($)	Apr. 03, 2018 EUR (€)	Apr. 03, 2018 USD ($)	Feb. 03, 2015 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maximum Remaining Maturity of Foreign Currency Derivatives	36 months
Number of Countries in which Entity Operates | country				60	60
Number of Currencies Used				30	30
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Amount of Hedged Item									$ 100,000,000.0	$ 250,000,000.0
Derivative, Fixed Interest Rate								2.775%	2.775%	2.393%
Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount					$ 206,400,000
2018 Credit Agreement [Member] | Cross Currency Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Amount of Hedged Item							$ 600,000,000.0		$ 600,000,000.0
Derivative, Notional Amount | €						€ 525.9		€ 490.1
Derivative, Cash Received on Hedge		$ 33,100,000
Derivative, Fixed Interest Rate						1.785%	1.785%	2.0231%	2.0231%
Net Investment Hedging [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	$ 0	0	$ 0
Net Investment Hedging [Member] | Currency Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	$ 3,300,000	$ 2,300,000
Derivative, Notional Amount | €				€ 170.0