Derivative Instruments - Impact on Statements of Income, Fair Value Hedges (Details 2a) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Fair value hedge gains (losses) recorded in income
Derivatives	$ 9,282	$ (5,427)	$ 3,811	$ 1,722
Hedged items	(9,164)	5,534	(3,605)	(1,522)
Total income statement impact	118	107	206	200
Hedge ineffectiveness	4	17	(20)	141
Excluded components	114	90	226	59
Interest rate contract
Fair value hedge gains (losses) recorded in income
Derivatives	1,094	667	542	2,644
Hedged items	(928)	(536)	(230)	(2,134)
Total income statement impact	166	131	312	510
Hedge ineffectiveness	2	17	(24)	141
Excluded components	164	114	336	369
Foreign exchange
Fair value hedge gains (losses) recorded in income
Derivatives	6,226	(5,312)	1,781	176
Hedged items	(5,707)	5,091	(1,182)	(431)
Total income statement impact	519	(221)	599	(255)
Hedge ineffectiveness	0	0	0	0
Excluded components	519	(221)	599	(255)
Included revenue related to certain foreign exchange trading derivatives	6,400	(6,200)	1,400	(629)
Commodity
Fair value hedge gains (losses) recorded in income
Derivatives	1,962	(782)	1,488	(1,098)
Hedged items	(2,529)	979	(2,193)	1,043
Total income statement impact	(567)	197	(705)	(55)
Hedge ineffectiveness	2	0	4	0
Excluded components	$ (569)	$ 197	$ (709)	$ (55)

Fair value hedge gains and losses.

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- Definition

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.

+ References

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

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 45

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings.

+ References

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

-Publisher FASB

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Net gain (loss) recognized in earnings during the reporting period representing the amount of the fair value of the hedges' ineffectiveness.

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Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

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-Publisher FASB

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Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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