Derivative Instruments - Impact of Derivative Instruments on the Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Foreign Exchange Contract
Derivative [Line Items]
Gain (loss) on foreign exchange contracts and term loans designated as net investment hedge recognized in OCI	$ 78,947	$ 12,200	$ 91,672	$ 100,205
Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) on derivative instruments	7,478	4,185	19,945	8,008
Derivative Instruments Not Designated
Derivative [Line Items]
Gain (loss) on derivative instruments	$ 600	$ (203)	$ (2,065)	$ 2,250

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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-Publisher FASB
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Amount, after tax, of reclassification from accumulated other comprehensive income (AOCI) of gain (loss) from increase (decrease) in fair value of net investment hedge.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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