Amounts Reclassified out of Accumulated Other Comprehensive Income (Detail) - Gain (loss) on cash flow hedges: - Forward Foreign Currency Exchange Contracts - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) reclassified from accumulated OCI into earnings	$ 7,621	$ 4,739
Net Product Revenues
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) reclassified from accumulated OCI into earnings	3,189	$ 4,739
Selling, General and Administrative
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) reclassified from accumulated OCI into earnings	$ 4,432