Derivative Instruments - Additional Information (Detail) (USD $)	3 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2013 Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2012 Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2013 Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2012 Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2013 Not Designated As Hedging Instrument	Jun. 30, 2012 Not Designated As Hedging Instrument	Jun. 30, 2013 Not Designated As Hedging Instrument	Jun. 30, 2012 Not Designated As Hedging Instrument	Jun. 30, 2013 Not Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2012 Not Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2013 Not Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification	Jun. 30, 2012 Not Designated As Hedging Instrument Foreign Exchange Forward Cost of Sales Classification
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Maximum term for foreign currency forward exchange contracts	18 months
Notional amount of foreign currency forward exchange contracts	$ 1,430,000,000	$ 1,360,000,000	$ 1,340,000,000
Net gain (loss) reclassified from accumulated other comprehensive loss to the consolidated statements of operations for derivatives designated as hedging instruments				(326,000)	4,328,000	803,000	8,866,000
Net gain (loss) recognized in the consolidated statements of operations for derivatives not designated as hedging instruments								$ (3,918,000)	$ (29,337,000)	$ (17,290,000)	$ (8,642,000)	$ (372,000)	$ (782,000)	$ 31,000	$ (535,000)