Net Gains Recorded in Other Income and Consolidated Statements of Income , Net Relating to Foreign Exchange Contracts Not Designated as Hedges (Detail) (Derivatives Not Designated as Hedging Instruments, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Gains (losses) recognized in other income (loss), net	$ 43	$ (5,569)	$ 3,499	$ (12,968)