Fair Value Option (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Changes in fair value under the fair value option election
Federal funds sold and securities purchased under resale agreements	$ 121	$ 261	$ 3	$ 280
Securities borrowed	(8)	27	1	39
Trading assets:
Debt and equity instruments, excluding loans	103	28	270	185
Loans reported as trading assets:
Changes in instrument-specific credit risk	433	417	913	820
Other changes in fair value	1,384	918	2,232	1,289
Loans:
Changes in instrument-specific credit risk	(7)	32	(13)	79
Other changes in fair value	139	(44)	282	(71)
Other assets	(42)	(49)	(42)	(102)
Deposits	(93)	(103)	(110)	(292)
Federal funds purchased and securities loaned or sold under repurchase agreements	(14)	(56)	21	(65)
Other borrowed funds	739	838	956	912
Trading liabilities	(3)	0	(6)	(3)
Beneficial interests issued by consolidated VIEs	(55)	(14)	(89)	32
Other liabilities	(2)	(5)	(7)	18
Long-term debt:
Changes in instrument-specific credit risk	145	534	199	585
Other changes in fair value	(93)	1,332	(117)	1,558
Long-term debt
Long-term debt	279,228		279,228		270,653
Fair Value Option (Numeric) [Abstract]
Changes in instrument-specific credit risk related to structured notes	142	588	165	696
Contractual principal outstanding
Loans
Nonaccrual loans	6,231		6,231		6,173
Total loans	48,725		48,725		48,159
Contractual principal outstanding \| Principal Protected Debt
Long-term debt
Long-term debt	20,620		20,620		20,761
Long-term beneficial interests
Total long-term beneficial interests	0		0		49
Contractual principal outstanding \| Total loans
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	889		889		927
All other performing loans	2,239		2,239		2,496
Contractual principal outstanding \| Trading assets
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	5,342		5,342		5,246
All other performing loans	40,255		40,255		39,490
Fair value
Loans
Nonaccrual loans	1,482		1,482		1,371
Total loans	37,915		37,915		36,446
Long-term debt
Total long term debt	38,516		38,516		38,839
Long-term beneficial interests
Total long-term beneficial interests	911		911		1,495
Fair value \| Principal Protected Debt
Long-term debt
Long-term debt	21,157		21,157		21,315
Long-term beneficial interests
Total long-term beneficial interests	0		0		49
Fair value \| Non Principal Protected Debt
Long-term debt
Long-term debt	17,359		17,359		17,524
Long-term beneficial interests
Total long-term beneficial interests	911		911		1,446
Fair value \| Total loans
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	72		72		132
All other performing loans	1,488		1,488		1,434
Fair value \| Trading assets
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	1,410		1,410		1,239
All other performing loans	34,945		34,945		33,641
Fair value over/(under) contractual principal outstanding
Loans
Nonaccrual loans	(4,749)		(4,749)		(4,802)
Total loans	(10,810)		(10,810)		(11,713)
Fair value over/(under) contractual principal outstanding \| Principal Protected Debt
Long-term debt
Long-term debt	537		537		554
Long-term beneficial interests
Total long-term beneficial interests	0		0		0
Fair value over/(under) contractual principal outstanding \| Total loans
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	(817)		(817)		(795)
All other performing loans	(751)		(751)		(1,062)
Fair value over/(under) contractual principal outstanding \| Trading assets
Loans
Performing loans 90 days or more past due	0		0		0
Nonaccrual loans	(3,932)		(3,932)		(4,007)
All other performing loans	(5,310)		(5,310)		(5,849)
Principal transactions
Changes in fair value under the fair value option election
Federal funds sold and securities purchased under resale agreements	121	261	3	280
Securities borrowed	(8)	27	1	39
Trading assets:
Debt and equity instruments, excluding loans	107	40	271	196
Loans reported as trading assets:
Changes in instrument-specific credit risk	429	389	909	798
Other changes in fair value	13	(299)	138	(683)
Loans:
Changes in instrument-specific credit risk	(7)	32	(13)	79
Other changes in fair value	139	(44)	282	(71)
Other assets	0	0	0	0
Deposits	(93)	(103)	(110)	(292)
Federal funds purchased and securities loaned or sold under repurchase agreements	(14)	(56)	21	(65)
Other borrowed funds	739	838	956	912
Trading liabilities	(3)	0	(6)	(3)
Beneficial interests issued by consolidated VIEs	(55)	(14)	(89)	32
Other liabilities	(1)	(19)	(4)	4
Long-term debt:
Changes in instrument-specific credit risk	145	534	199	585
Other changes in fair value	(93)	1,332	(117)	1,558
Other income
Changes in fair value under the fair value option election
Federal funds sold and securities purchased under resale agreements	0	0	0	0
Securities borrowed	0	0	0	0
Trading assets:
Debt and equity instruments, excluding loans	(4)	(12)	(1)	(11)
Loans reported as trading assets:
Changes in instrument-specific credit risk	4	28	4	22
Other changes in fair value	1,371	1,217	2,094	1,972
Loans:
Changes in instrument-specific credit risk	0	0	0	0
Other changes in fair value	0	0	0	0
Other assets	(42)	(49)	(42)	(102)
Deposits	0	0	0	0
Federal funds purchased and securities loaned or sold under repurchase agreements	0	0	0	0
Other borrowed funds	0	0	0	0
Trading liabilities	0	0	0	0
Beneficial interests issued by consolidated VIEs	0	0	0	0
Other liabilities	(1)	14	(3)	14
Long-term debt:
Changes in instrument-specific credit risk	0	0	0	0
Other changes in fair value	0	0	0	0
Letters of Credit Hedged By Derivative Transactions \| Other Guarantees and Commitments
Fair Value Option (Numeric) [Abstract]
Contractual amount	3,800		3,800		3,800
Carrying value	(6)		(6)		(6)
Other Guarantees and Commitments
Fair Value Option (Numeric) [Abstract]
Contractual amount	6,177		6,177		6,492
Carrying value	$ (6)		$ (6)		$ (6)

Changes in fair value related to beneficial interests issued by consolidated VIEs for which the fair value election was made.

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This item represents the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk of Long-term Debt with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk.

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Changes in fair value related to deposits for which the fair value election was made.

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Changes in fair value related to federal funds purchased and securities loaned or sold under repurchase agreements for which the fair value election was made.

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Changes in fair value related to federal funds sold and securities purchased under resale agreements for which the fair value election was made.

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This item represents loans held as assets that are 90 days or more past due for which the fair value option has been elected.

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This item represents loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value.

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Other Changes In Fair Value of loans for which the fair value election was made.

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This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans reported as trading assets.

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Other changes in fair value of loans reported as trading assets for which the fair value election was made.

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Represents the portion of long-term debt for which the fair value option has been elected, valued at fair value.

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Changes In the fair value of long term debt related to factors other than instrument-specific credit risk.

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Fair Value Option Numeric.

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This item represents the changes in fair value for other assets for which the fair value election was made that are not otherwise specified in the taxonomy.

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Changes in fair value related to other borrowed funds for which the fair value election was made.

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Changes in fair value related to other liabilities not otherwise specified in the taxonomy for which the fair value election was made.

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Changes in fair value related to securities borrowed for which the fair value election was made.

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Represents the portion of loans held as assets for which the fair value option has been elected, valued at fair value.

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Fair Value Options Other Performing Loans.

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations or commited party's obligations under the guarantee or each group of similar guarantees or commitments.

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Maximum potential amount of future payments (undiscounted) the guarantor or committed party could be required to make under the guarantee or commitment or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Loans reported as trading assets.

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Long Term Beneficial Interests.

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Long term beneficial interests.

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Trading liabilities, change in fair value.

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This item represents the aggregate fair value of loans held as assets that are 90 days or more past due for which the fair value option has been elected.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph e(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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-Paragraph 28

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This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph e(2)

-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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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Number 210

-Article 7

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-Paragraph 16

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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