Fair Value Measurements - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) Contract	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Contract	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Credit facility	$ 1,215		$ 1,215		$ 1,206
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	8		15	$ 14
Designated as Hedging Instrument
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Credit facility	162		162
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	$ (8)	$ 3	$ (11)	(3)
Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of foreign currency forward contracts outstanding | Contract	5		5
Notional amount	$ 133		$ 133
Change in fair value gain (loss)	(7)	$ 3	(10)	$ (2)
Financial assets and liabilities measured on recurring basis | Significant Other Observable Inputs (Level 2) | Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of derivative assets					$ 12
Fair value of derivative liability	$ 2		$ 2