Income Taxes - Components of Consolidated Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
United States-Federal	$ 90	$ 718	$ 682
United States-State	12	51	60
Outside United States	1,085	1,380	1,211
Current Income Tax Expense (Benefit), Total	1,187	2,149	1,953
Deferred:
United States-Federal	(356)	(194)	(109)
United States-State	(19)	(9)	(4)
Outside United States	(52)	(12)	34
Valuation allowance	(14)	(6)	(26)
Deferred income taxes	(441)	(221)	(105)
Consolidated taxes on income	$ 746	$ 1,928	$ 1,848