Fair Value of Financial Assets and Liabilities (Detail) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Assets	[1]	$ 6	$ 17
Fair value measurements on a recurring basis, Liabilities	[1]	(2)
Interest rate swap derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Liabilities	[1]	(1)	(1)
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 measurements on a recurring basis, Assets	[1]	6	17
Fair value measurements on a recurring basis, Liabilities	[1]	(2)
Significant Other Observable Inputs (Level 2) | Interest rate swap derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Liabilities	[1]	$ (1)	$ (1)

[1] These derivative contracts have been designated as hedging instruments.