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Investments (Roll-Forward Of Pre-Tax Credit Losses Related To Fixed Maturities For Which Portion Of Other-Than-Temporary Impairment Was Recognized In Other Comprehensive Income) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Roll-Forward Of Pre-Tax Credit Losses Related To Fixed Maturities For Which Portion Of Other-Than-Temporary Impairment Was Recognized In Other Comprehensive Income [Roll Forward] | ||||
| Balance of credit losses related to securities still held – beginning of period | $ 24 | $ 40 | $ 37 | $ 43 |
| Additions where no OTTI was previously recorded | 2 | 1 | 9 | 5 |
| Additions where an OTTI was previously recorded | 2 | 0 | 5 | 3 |
| Reductions for securities sold during the period | (11) | (3) | (34) | (13) |
| Balance of credit losses related to securities still held – end of period | $ 17 | $ 38 | $ 17 | $ 38 |