Hedging - Cash Flow Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Revenues	$ 949,828	$ 784,535	$ 2,749,556	$ 2,177,491
Other (expense) income	(31,747)	(60,995)	64,802	89,662
Unrealized Holding Gains (Losses), Net of Tax, On Foreign Currency Forward Contracts | Reclassification out of Accumulated Other Comprehensive Income | Foreign currency forward contracts | Not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Other (expense) income	(8,812)	(782)	(10,874)	1,832
Product revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Revenues	949,828	782,511	2,747,461	2,170,152
Product revenues, net | Unrealized Holding Gains (Losses), Net of Tax, On Foreign Currency Forward Contracts | Reclassification out of Accumulated Other Comprehensive Income | Foreign currency forward contracts | Designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Revenues	$ 10,304	$ 1,721	$ 25,381	$ (7,438)