Provision for (Benefit from) Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current
Federal	$ (32)	$ (1)	$ (4)
State	3	4	12
Foreign	40	79	36
Current income tax provision (benefit)	11	82	44
Deferred
Federal	45	89	28
State	(1)	2	8
Foreign	14	(26)	1
Deferred income tax provision	58	65	37
Provision for income taxes	$ 69	$ 147	$ 81