v2.4.0.8

Investments (Narrative) (Detail) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 Security | Sep. 30, 2013 | Sep. 30, 2014 Security | Sep. 30, 2013 | Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Non-cash exchange of securities | $ 219,000,000 |  |  |  |
Fair value of securities transferred from AFS to HTM | 2,000,000,000 |  | 2,000,000,000 |  |
Net unrealized appreciation (depreciation) included in OCI | (1,000,000) | 1,000,000 | (6,000,000) | (24,000,000) |
Net unrealized depreciation included in AOCI |  |  |  |  | 4,000,000
Percentage of mortgage-backed securities represented by investments in US government agency bonds | 83.00% |  | 83.00% |  | 83.00%
Credit losses recognized in net income for corporate securities | 4,000,000 | 1,000,000 | 14,000,000 | 8,000,000 |
Credit losses recognized in net income for mortgage-backed securities | 0 | 0 | 0 | 0 |
Number of fixed maturities in an unrealized loss position | 5,799 |  | 5,799 |  |
Total number of fixed maturities | 25,735 |  | 25,735 |  |
Largest single unrealized loss in the fixed maturities | 3,000,000 |  | 3,000,000 |  |
Number of equity securities in an unrealized loss position | 64 |  | 64 |  |
Total number of equity securities | 238 |  | 238 |  |
Largest single unrealized loss in the equity securities | 1,000,000 |  | 1,000,000 |  |
Restricted assets in fixed maturities and short-term investments | 15,700,000,000 |  | 15,700,000,000 |  | 16,300,000,000
Restricted assets in cash | $ 72,000,000 |  | $ 72,000,000 |  | $ 162,000,000
Moodys Historical Mean Recovery Rate |  |  | 42.00% |  |
Company Assumed Recovery Rate |  |  | 32.00% |  |

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