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Derivatives and Hedging - Balances and Locations of Derivative Instruments (Details) - Designated as Hedging Instrument € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Other Current Liabilities \| Cash Flow Hedges \| Interest Rate Swap
Derivative [Line Items]
Notional			$ 0	$ 800,000
Balance			0	24,792
Other Current Liabilities \| Net Investment Hedges \| Forward contracts
Derivative [Line Items]
Notional			360,990	0
Derivative liability, balance			19,442	0
Prepaid Expenses and Other Current Assets \| Net Investment Hedges \| Forward contracts
Derivative [Line Items]
Notional			800,000	925,810
Derivative asset, balance			7,668	39,965
Long-term Debt \| Net Investment Hedges \| Foreign currency debt
Derivative [Line Items]
Notional \| €	€ 700,000	€ 700,000
Balance			$ 861,070	$ 784,000