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Securities - U.S. GSE, Agency, and Treasury Securities (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2013
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Dec. 31, 2012
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| Schedule of Held-to-maturity Securities [Line Items] | |||||
| Debt Securities Amortized Cost | $ 338,805 | $ 353,268 | |||
| Debt Securities, Fair Value | 334,337 | 361,120 | |||
| Held-to-maturity debt securities, Amortized Cost | 54,922 | [1] | 49,481 | ||
| Held-to-maturity Securities, Fair Value | 52,856 | [1] | 50,270 | ||
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Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | |||||
| Debt Securities Amortized Cost | 138,517 | 121,522 | |||
| Debt Securities, Fair Value | 135,163 | 123,933 | |||
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Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | |||||
| Debt Securities Amortized Cost | 118,459 | 124,348 | |||
| Debt Securities, Fair Value | 119,414 | 127,541 | |||
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Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | |||||
| Debt Securities Amortized Cost | 30,905 | 22,995 | |||
| Debt Securities, Fair Value | $ 30,347 | $ 23,502 | |||
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- Definition
Debt Securities Amortized Cost No definition available.
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- Definition
Debt Securities, Fair Value No definition available.
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- Definition
Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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