Financial Instruments - Derivative Instruments Which Were Not Designated as Hedging Instruments (Detail) (Foreign currency contracts [Member], Other (income) expense, net [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Foreign currency contracts [Member] | Other (income) expense, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 25,678	$ 16,479