Derivative Financial Instruments (Details 3) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income on derivatives	$ 438	$ 881	$ 816	$ 940
Gain (loss) recognized in earnings attributable to risk being hedged	(281)	(148)	(241)	(412)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Recognized in AOCI	532	(1,367)	(174)	611
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings	(167)	(7)	(494)	(152)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, (Ineffectiveness) and Amounts Excluded from Effectiveness Testing	(6)	5	(12)	(2)
Interest rate contracts \| Derivative instruments in fair value hedging relationships \| Cost of financing
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income, recognized on derivative instruments in fair value hedges	204	135	263	382
Gain (loss) recognized in earnings attributable to risk being hedged	(166)	(90)	(142)	(251)
Interest rate contracts \| Derivative instruments in fair value hedging relationships \| Interest expense
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income, recognized on derivative instruments in fair value hedges	141	86	183	245
Gain (loss) recognized in earnings attributable to risk being hedged	(115)	(58)	(99)	(161)
Interest rate contracts \| Derivative instruments in cash flow hedging relationships \| Interest expense
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings	(2)	(2)	(6)	(6)
Foreign exchange contracts \| Derivative instruments in net investment hedging relationships \| Interest expense
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings		0		0
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, (Ineffectiveness) and Amounts Excluded from Effectiveness Testing	(4)	1	(10)	1
Foreign exchange contracts \| Derivative instruments not designated as hedging instruments \| Other (income) and expense
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income on derivatives	183	584	388	279
Foreign exchange contracts \| Derivative instruments in cash flow hedging relationships \| Other (income) and expense
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings	(86)	(5)	(256)	(19)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, (Ineffectiveness) and Amounts Excluded from Effectiveness Testing	(2)	4	(2)	(3)
Derivative instruments not designated as hedging instruments \| Other (income) and expense \| Warrants
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income on derivatives	10		10
Foreign exchange contracts \| Derivative instruments in cash flow hedging relationships \| Cost of sales
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings	(60)	1	(163)	(81)
Foreign exchange contracts \| Derivative instruments in cash flow hedging relationships \| Selling, general and administrative expense
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Reclassified from AOCI to Earnings	(19)	(2)	(70)	(46)
Equity contracts \| Derivative instruments not designated as hedging instruments \| Selling, general and administrative expense
Derivative Instruments, Gain (Loss)
Amount of gain (loss) recognized in income on derivatives	(100)	76	(28)	34
Foreign exchange contracts \| Derivative instruments in cash flow hedging relationships
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Recognized in AOCI	295	(927)	(159)	464
Foreign exchange contracts \| Derivative instruments in net investment hedging relationships
Derivative Instruments, Gain (Loss)
Gain (Loss) Recognized in Earnings and Other Comprehensive Income, Effective Portion Recognized in AOCI	$ 237	$ (440)	$ (15)	$ 147

The amount recognized in earnings related to the change in fair value during the period of derivative or nonderivative instruments designated as fair value hedging instruments.

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- Definition

The amount recognized in earnings related to the change in fair value during the period of the hedged item in a fair value hedge.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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