Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Derivative Instruments Gain Loss [Line Items]
Pre-tax losses from accumulated other comprehensive loss to interest expense expected to be recognized in next twelve months	$ 7
Foreign Currency Exchange Contract
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivative financial instruments	0	$ 2
Notional amount of outstanding derivative financial instruments	$ 132		$ 37