Income Taxes - Components of Consolidated Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Current:
United States-Federal	$ 31	$ 202	$ 147	$ 479
United States-State	8	19	22	38
Outside United States	280	342	830	1,033
Current Income Tax Expense (Benefit), Total	319	563	999	1,550
Deferred:
United States-Federal	(67)	(38)	(96)	(27)
United States-State	(6)	(4)	(7)	(2)
Outside United States	4	35	(15)	9
Valuation Allowance			(22)
Deferred income taxes	(69)	(7)	(140)	(20)
Consolidated taxes on income	$ 250	$ 556	$ 859	$ 1,530