Income Tax - Components of Consolidated Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
United States-Federal	$ 203	$ 171	$ 319	$ 361
United States-State	20	18	35	35
Outside United States	298	263	546	466
Current Income Tax Expense (Benefit), Total	521	452	900	862
United States-Federal	(42)	9	(24)	(24)
United States-State	(3)	1	(3)	(2)
Outside United States	(7)	(27)	2	(7)
Valuation allowance	(20)	4	(20)	4
Deferred income taxes	(72)	(13)	(45)	(29)
Consolidated taxes on income	$ 449	$ 439	$ 855	$ 833