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Securities Available for Sale, Credit Loss Component (Details) (Debt Securities [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Debt Securities [Member]
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| Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] | |||
| Credit loss component, beginning of period | $ 1,272 | $ 1,043 | $ 1,187 |
| Initial credit impairments | 55 | 87 | 122 |
| Subsequent credit impairments | 182 | 335 | 278 |
| Total Additions | 237 | 422 | 400 |
| For securities sold | (194) | (160) | (263) |
| For securities derecognized due to changes in consolidation status of variable interest entities | 0 | (2) | (242) |
| Due to change in intent to sell or requirement to sell | 0 | 0 | (2) |
| For recoveries of previous credit impairments | (26) | (31) | (37) |
| Total reductions | (220) | (193) | (544) |
| Credit loss component, end of period | $ 1,289 | $ 1,272 | $ 1,043 |
| X | ||||||||||
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- Definition
This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held due to increases in cash flows expected to be collected and recognized over the remaining life of the security. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security because of the sale of impaired securities during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Other Than Temporary Impairment Credit Losses Investments Portion Recognized In Earnings Net Available for sale Securities No definition available.
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- Definition
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Total Reductions. No definition available.
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- Definition
This item represents reductions in the cumulative amount of other than temporary impairment due to credit loss that has been recognized in earnings due to securities derecognized under consolidation accounting guidance. No definition available.
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