Variable Interest Entities (Details 11) (USD $) In Millions	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Summary of loan sale activities [Abstract]
Carrying value of loans sold	$ 156,615	$ 154,571	$ 132,111
Proceeds received from loan sales as cash	3,887	1,702	7,112
Proceeds received from loan sales as securities	149,786	149,343	121,947
Total proceeds received from loan sales	153,673	151,045	129,059
Gains on loan sales	$ 212	$ 89	$ 30

Cash proceeds received from the sale of originated and purchased mortgage loans.

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Proceeds received from the sale of originated and purchased mortgage loans.

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- Definition

Securities proeceeds received from the sale of originated and purchased mortgage loans.

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- Definition

Summary Of Loan Sale Activities.

+ Details

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- Definition

The gains and losses included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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- Definition

The carrying amount of mortgage loans on real estate that were sold during the reporting period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Article 12

+ Details

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