Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Current Federal		$ 2	$ 3
Current State	$ 1	(1)	2
Current Foreign	12	3	10
Current Income Tax Expense (Benefit), Total	13	4	15
Deferred Federal	24	2	(1)
Deferred State	6		(1)
Deferred Foreign	(3)	3	1
Deferred income taxes	27	5	(1)
Income tax provision – continuing operations	$ 40	$ 9	$ 14