Income Tax - Income Tax Disclosure Table (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure - Income Tax - Income Tax Disclosure Table (Detail) [Line Items]
United States	$ 494	$ 455	$ 1,425	$ 1,578
Outside United States	1,737	1,343	5,096	3,626
Income before taxes	$ 2,231	$ 1,798	$ 6,521	$ 5,204

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Period Type:	duration