Financial Instruments - Derivative Instruments Which Were Not Designated as Hedging Instruments (Detail) (Fair Value of Derivatives Not Designated as Hedging Instruments [Member], Foreign currency contracts [Member], Other income (expense), net [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Fair Value of Derivatives Not Designated as Hedging Instruments [Member] | Foreign currency contracts [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivative	$ (2,926)	$ 8,177