Allowance For Credit Losses (Details 1) (USD $) In Millions	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Allowance for lending-related commitments [Abstract]
Allowance for lending-related commitments at January 1	$ 939	$ 659	$ 850
Cumulative effect of changes in accounting principles		0	0
Provision for lending-related commitments excluding accounting conformity	(183)	280	(215)
Provision for lending-related commitments, accounting conformity	0	0	(43)
Provision for lending-related commitments	(183)	280	(258)
Acquired allowance resulting from Washington Mutual transaction			66
Other	(21)	0	1
Allowance for lending-related commitments at December 31	717	939	659
Allowance for lending related commitments by impairment methodology
Asset-specific	180	297	29
Formula-based	537	642	630
Total allowance for lending-related commitments	717	939	659
Lending-related commitments by impairment methodology:
Total lending related commitments	954,840	991,095	1,121,378
Impaired collateral-dependent loans:
Net charge-offs	25,782	24,018	10,764
Impaired collateral dependent loans at fair value, less cost to sell	1,696	1,337	1,065
Impaired collateral-dependent loans [Member]
Impaired collateral-dependent loans:
Net charge-offs	573	666	146
Impaired collateral-dependent loans [Member] \| Wholesale [Member]
Impaired collateral-dependent loans:
Net charge-offs	269	500	124
Impaired collateral-dependent loans [Member] \| Consumer Excluding Credit Card [Member]
Impaired collateral-dependent loans:
Net charge-offs	304	166	22
Asset Specific [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	1,005	1,577	233
Asset Specific [Member] \| Wholesale [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	1,005	1,577	233
Asset Specific [Member] \| Consumer Excluding Credit Card [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	0	0	0
Asset Specific [Member] \| Credit Card [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	0	0	0
Formula Based [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	953,835	989,518	1,121,145
Formula Based [Member] \| Wholesale [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	345,074	345,578	379,638
Formula Based [Member] \| Consumer Excluding Credit Card [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	61,534	74,827	117,805
Formula Based [Member] \| Credit Card [Member]
Lending-related commitments by impairment methodology:
Total lending related commitments	547,227	569,113	623,702
Allowance for Lending Related Commitments [Member]
Allowance for lending-related commitments [Abstract]
Cumulative effect of changes in accounting principles	(18)
Allowance for Lending Related Commitments [Member] \| Wholesale [Member]
Allowance for lending-related commitments [Abstract]
Cumulative effect of changes in accounting principles	(18)
Wholesale [Member]
Allowance for lending-related commitments [Abstract]
Allowance for lending-related commitments at January 1	927	634	835
Provision for lending-related commitments excluding accounting conformity	(177)	290	(214)
Provision for lending-related commitments, accounting conformity	0	0	5
Provision for lending-related commitments	(177)	290	(209)
Other	(21)	3	8
Allowance for lending-related commitments at December 31	711	927	634
Allowance for lending related commitments by impairment methodology
Asset-specific	180	297	29
Formula-based	531	630	605
Total allowance for lending-related commitments	711	927	634
Lending-related commitments by impairment methodology:
Total lending related commitments	346,079	347,155	379,871
Impaired collateral-dependent loans:
Impaired collateral dependent loans at fair value, less cost to sell	806	1,127	1,032
Consumer Excluding Credit Card [Member]
Allowance for lending-related commitments [Abstract]
Allowance for lending-related commitments at January 1	12	25	15
Provision for lending-related commitments excluding accounting conformity	(6)	(10)	(1)
Provision for lending-related commitments, accounting conformity	0	0	(48)
Provision for lending-related commitments	(6)	(10)	(49)
Acquired allowance resulting from Washington Mutual transaction			66
Other	0	(3)	(7)
Allowance for lending-related commitments at December 31	6	12	25
Allowance for lending related commitments by impairment methodology
Asset-specific	0	0	0
Formula-based	6	12	25
Total allowance for lending-related commitments	6	12	25
Lending-related commitments by impairment methodology:
Total lending related commitments	61,534	74,827	117,805
Impaired collateral-dependent loans:
Impaired collateral dependent loans at fair value, less cost to sell	890	210	33
Credit Card [Member]
Allowance for lending-related commitments [Abstract]
Allowance for lending-related commitments at January 1	0	0	0
Cumulative effect of changes in accounting principles	0	0	0
Provision for lending-related commitments excluding accounting conformity	0	0	0
Provision for lending-related commitments, accounting conformity	0	0	0
Provision for lending-related commitments	0	0	0
Other	0	0	0
Allowance for lending-related commitments at December 31	0	0	0
Allowance for lending related commitments by impairment methodology
Asset-specific	0	0	0
Formula-based	0	0	0
Total allowance for lending-related commitments	0	0	0
Lending-related commitments by impairment methodology:
Total lending related commitments	$ 547,227	$ 569,113	$ 623,702

Allowance For Lending Related Commitments Asset Specific.

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- Definition

Allowance For Lending Related Commitments Formula Based.

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- Definition

Components.

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- Definition

Impaired collateral-dependent loans.

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- Definition

Allowance For Lending Related Commitments.

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- Definition

Lending-related commitments by impairment methodology.

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- Definition

Reflects the carrying amount of impaired collateral dependent loans at fair value less cost to sell.

+ Details

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- Definition

The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract.

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- Definition

The sum of the periodic provision charged to operations, as well as any accounting policy conformity adjustment recorded in connection with a business combination transaction, based on an assessment of the collectibility of the lending related commitments (which are conditional contracts to lend money to a client in the future under specific terms) and the offset to which is either added to or deducted from the allowance account for the purpose of adjusting the portfolio to an amount that approximates net realizable value (the amount expected to be collected).

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- Definition

Represents any accounting policy conformity adjustment recorded in connection with a business combination transaction, based on an assessment of the collectibility of lending-related commitments (which are conditional contracts to lend money to a client in the future under specific terms) and the offset to which is either added to or deducted from the allowance account for the purpose of adjusting the portfolio to an amount that approximates net realizable value (the amount expected to be collected).

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- Definition

The sum of the periodic provision charged to operations, excluding any accounting policy conformity adjustment, based on an assessment of the collectibility of lending-related commitments (which are conditional contracts to lend money to a client in the future under specific terms) and the offset to which is either added to or deducted from the allowance account for the purpose of adjusting the portfolio to an amount that approximates net realizable value (the amount expected to be collected).

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- Definition

Valuation allowances and reserves acquired.

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- Definition

Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

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- Definition

Amount of the cumulative effect of the change in accounting principle on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 154

-Paragraph 2, 17, 18

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The provision charged to earnings in the period, the offset to which is either added to or deducted from the allowance account, for the purpose of reducing receivables, other than loans, leases, or credit losses, to an amount that approximates their net realizable value (the amount expected to be collected); includes provision for losses associated with foreclosed assets.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 9

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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