Derivative Instruments - Schedule of Derivative Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 27,207	$ 18,106
Derivative Liabilities	9,212	3,720
Designated As Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets	24,529	16,890
Derivative Liabilities	2,140	1,433
Designated As Hedging Instrument | Foreign Exchange Forward | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	18,747	15,279
Designated As Hedging Instrument | Foreign Exchange Forward | Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative Assets	5,782	1,611
Designated As Hedging Instrument | Foreign Exchange Forward | Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1,917	1,214
Designated As Hedging Instrument | Foreign Exchange Forward | Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	223	219
Not Designated As Hedging Instrument | Foreign Exchange Forward | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	2,678	1,216
Not Designated As Hedging Instrument | Foreign Exchange Forward | Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 7,072	$ 2,287