Other (Income) Expense, Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Income Expense [Line Items]
Interest income	$ (47)	$ (32)	$ (177)	$ (102)
Interest expense	178	176	524	522
Exchange losses	50	59	130	102
Other, net	19	(137)	(31)	287
Other (income) expense, net	$ 200	$ 66	$ 446	$ 809

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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