Financial Instruments and Fair Value Measurements - Notional Principal Amounts of Outstanding Derivative Instruments (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Derivative instruments not designated as hedging instruments, description of terms		We generally use forward contracts to reduce the effects of foreign currency exchange rate fluctuations on our cash flows primarily for the Euro versus the U.S. Dollar. For the periods ended December 31, 2019, 2018 and 2017, respectively, our forward contracts have not been designated as hedges and generally had maturities of less than 90 days.
Not Designated as Hedging Instrument | Foreign Exchange-forward Contracts
Derivatives Fair Value [Line Items]
Foreign currency exchange-forward contracts	[1],[2]	$ 10,000,000	$ 13,000,000

[1] Derivative contracts address foreign currency exchange fluctuations for the Euro versus the U.S. dollar. The Company had one and two outstanding derivative contracts as of December 31, 2019 and 2018, respectively. These outstanding derivatives are not designated as hedging instruments.

[2] The fair value of our outstanding derivatives as of December 31, 2019 and 2018, respectively, was not material and was reported as a liability in accrued expenses and other current liabilities on our consolidated balance sheets.