SECURITIZATIONS AND VARIABLE INTEREST ENTITIES (Details 7) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Mortgage servicing rights:
Classification of Securitizations
Fair value of capitalized mortgage servicing rights	$ 2,900,000,000	$ 4,000,000,000	$ 2,900,000,000	$ 4,000,000,000
Principal amount of loans and other financial instruments	421,000,000,000	503,000,000,000	421,000,000,000	503,000,000,000
Re-securitizations
Balance at beginning of period	4,258,000,000	4,894,000,000	4,554,000,000	6,530,000,000
Originations	126,000,000	155,000,000	425,000,000	424,000,000
Changes in fair value of MSRs due to changes in inputs and assumptions	(1,196,000,000)	(635,000,000)	(1,301,000,000)	(1,929,000,000)
Other changes	(336,000,000)	(438,000,000)	(826,000,000)	(1,049,000,000)
Balance at end of period	2,852,000,000	3,976,000,000	2,852,000,000	3,976,000,000
Servicing fees	292,000,000	336,000,000	897,000,000	1,049,000,000
Late fees	19,000,000	22,000,000	58,000,000	67,000,000
Ancillary fees	39,000,000	53,000,000	92,000,000	145,000,000
Total MSR fees	350,000,000	411,000,000	1,047,000,000	1,261,000,000
Non-agency-sponsored mortgages
Re-securitizations
Securities transferred to re-securitization entities			182,000,000
Original par value of re-securitizations deals in which the entity holds a retained interest	375,000,000		375,000,000
Market value of retained interest related to re-securitization transaction in 2011	32,000,000		32,000,000
Senior beneficial interests	72,000,000		72,000,000
Subordinated beneficial interests	303,000,000		303,000,000
U.S. government-sponsored agency guaranteed
Re-securitizations
Securities transferred to re-securitization entities			29,200,000,000
Original par value of re-securitizations deals in which the entity holds a retained interest	7,600,000,000		7,600,000,000
Market value of interest in U.S. government sponsored agency guaranteed re-securitization entities	2,100,000,000		2,100,000,000
Market value of retained interest related to re-securitization transaction in 2011	1,800,000,000		1,800,000,000
Original fair value of re-securitizations deals in which the entity holds a retained interest	$ 53,700,000,000		$ 53,700,000,000

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This element represents the amount of market value of interest owned by the entity in private-label re-securitization entities.

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This element represents the amount of market value of interest owned by the entity in private-label re-securitization entities, for current period.

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Represents the amount of original fair value of re-securitizations deals in which the entity holds a retained interest.

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Represents the amount of original par value of re-securitizations deals in which the entity holds a retained interest.

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Represents the amount of securities transferred to re-securitization entities.

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Obligation reflecting another party's senior right to economic interests in another entity or trust under a contractual right.

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Obligation reflecting another party's subordinate right to economic interests in another entity or trust under a contractual right.

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- Definition

All amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.

+ References

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- Definition

The amount of servicing fees from the securitization or asset-backed financing arrangement SPE.

+ References

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All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.

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All amounts that are due to the servicer of a financial asset as a result of the debt holder not meeting the monthly payment terms.

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- Definition

This includes both the securitized and unsecuritized portion of the total principal amount.

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- Definition

The value of new servicing assets acquired or created during the current period through purchases, assumptions of servicing obligations, and servicing obligations that result from transfers of financial assets.

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Fair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. The fair value of an asset is the amount at which that asset could be bought or sold (or settled) in a current transaction between willing parties, other than in a forced or liquidation sale. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating loans and then (a) transferring the loans to a qualifying special purpose entity in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The net increase (decrease) in fair value as a result of changes in the inputs, assumptions, or model used to calculate the fair value of servicing assets.

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Other net increase (decrease) in the balance in servicing assets subsequently measured at fair value. This element is for changes other than additions, disposals, changes in fair value resulting from changes in valuation inputs or changes in assumptions, or other changes in fair value.

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