Derivatives and Hedging Instruments - Hedges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Investment Hedging
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income		$ 218,269	$ (235,292)
Amount of gain or (loss) recognized in accumulated other comprehensive income	$ 73,284
Amount of gain or (loss) excluded from effectiveness testing included in income	19,261
Amount of gain or (loss) recognized in earnings		0	0
Net Investment Hedging | Foreign currency debt
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income	47,033
Amount of gain or (loss) recognized in accumulated other comprehensive income		218,269	(235,292)
Net Investment Hedging | Cross-currency interest rate swaps
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income	15,514
Amount of gain or (loss) recognized in accumulated other comprehensive income		0	0
Amount of gain or (loss) recognized in accumulated other comprehensive income	10,737
Cash flow hedge instruments
Derivative [Line Items]
Amount of gain or (loss) excluded from effectiveness testing included in income	(994)
Amount of gain or (loss) recognized in accumulated other comprehensive income	(6,780)
Amount of gain or (loss) recognized in accumulated other comprehensive income		58,227	(73,437)
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income	38,863
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income		(15,262)	9,662
Amount of gain or (loss) recognized in earnings		16,470	3,805
Cash flow hedge instruments | Foreign currency forward and option contracts
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income	(9,945)
Amount of gain or (loss) recognized in accumulated other comprehensive income		58,227	(73,437)
Cash flow hedge instruments | Foreign currency option contracts
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income	(1,807)
Amount of gain or (loss) recognized in accumulated other comprehensive income		0	0
Cash flow hedge instruments | Treasury locks
Derivative [Line Items]
Amount of gain or (loss) recognized in accumulated other comprehensive income	4,972
Amount of gain or (loss) recognized in accumulated other comprehensive income		0	0
Revenues | Cash flow hedge instruments | Foreign currency option contracts
Derivative [Line Items]
Amount of gain or (loss) excluded from effectiveness testing included in income	(1,082)
Amount of gain or (loss) recognized in earnings		0	0
Revenues | Cash flow hedge instruments | Foreign currency forward contracts
Derivative [Line Items]
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income	80,046
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income		(30,603)	20,845
Costs and operating expenses | Cash flow hedge instruments | Foreign currency forward contracts
Derivative [Line Items]
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income	(41,262)
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income		15,341	(11,183)
Interest expense | Net Investment Hedging | Cross-currency interest rate swaps
Derivative [Line Items]
Amount of gain or (loss) excluded from effectiveness testing included in income	19,261
Amount of gain or (loss) recognized in earnings		0	0
Interest expense | Cash flow hedge instruments | Treasury locks
Derivative [Line Items]
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income	79
Amount of gain or (loss) reclassified from accumulated other comprehensive income to income		0	0
Other income (expense) | Cash flow hedge instruments | Foreign currency forward contracts
Derivative [Line Items]
Amount of gain or (loss) excluded from effectiveness testing included in income	$ 88
Amount of gain or (loss) recognized in earnings		$ 16,470	$ 3,805