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Derivative Instruments - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Foreign Exchange Forward      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Notional amount of foreign currency forward exchange contracts $ 930,800 $ 1,190,000  
Foreign Exchange Forward | Designated As Hedging Instrument | Cost of Sales Classification      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Net (loss) gain reclassified from accumulated other comprehensive loss to the consolidated statements of operations for derivatives designated as hedging instruments 52,588 (883) $ (4,897)
Foreign Exchange Forward | Not Designated As Hedging Instrument      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Net (loss) gain recognized in the consolidated statements of operations for derivatives not designated as hedging instruments (46,656) (30,753) 13,520
Foreign Exchange Forward | Not Designated As Hedging Instrument | Cost of Sales Classification      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Net (loss) gain recognized in the consolidated statements of operations for derivatives not designated as hedging instruments $ (265) $ 732 $ (4,455)
Maximum      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Maximum term for foreign currency forward exchange contracts 18 months