Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Currency translation adjustment	$ (109)	$ (109)		$ (109)
Unfunded pension and postretirement benefit plan	(3)	(10)		(7)
Accumulated other comprehensive loss	$ (112)	$ (119)	[1]	$ (116)

[1] Financial information for 2015 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.