Income Tax - Income Tax Disclosure Table (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
United States	$ 522	$ 494	$ 1,671	$ 1,425
Outside United States	1,998	1,737	5,252	5,096
Income (loss) from continuing operations before income taxes and minority interest, Total	$ 2,520	$ 2,231	$ 6,923	$ 6,521

The portion of earnings (loss) from continuing operations before income taxes that is attributable to foreign operations, which is defined as income (loss) generated from operations located outside the foreign country.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration