v3.2.0.727

Investments (Narrative) (Detail) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) Security | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) Security | Jun. 30, 2014 USD ($) | Apr. 30, 2015 USD ($) | Apr. 14, 2015 USD ($) | Mar. 27, 2015 USD ($) | Dec. 31, 2014 USD ($)
Investment [Line Items] |  |  |  |  |  |  |  |
Total number of fixed maturities | Security | 26,933 |  | 26,933 |  |  |  |  |
Largest single unrealized loss in the fixed maturities | $ 5 |  | $ 5 |  |  |  |  |
Number of equity securities in an unrealized loss position | Security | 99 |  | 99 |  |  |  |  |
Total number of equity securities | Security | 271 |  | 271 |  |  |  |  |
Largest single unrealized loss in the equity securities | $ 1 |  | $ 1 |  |  |  |  |
Restricted assets in fixed maturities and short-term investments | 16,500 |  | 16,500 |  |  |  |  | $ 16,300
Restricted assets in cash | 80 |  | $ 80 |  |  |  |  | 117
Moodys Historical Mean Recovery Rate |  |  | 42.00% |  |  |  |  |
Company Assumed Recovery Rate |  |  | 32.00% |  |  |  |  |
Net unrealized depreciation included in AOCI | 7 |  | $ 7 |  |  |  |  | 3
Fair value of securities transferred from AFS to HTM |  |  |  |  | $ 1,900 |  |  |
Investments in partially-owned insurance companies | 638 |  | 638 |  |  |  |  | $ 504
Net unrealized appreciation (depreciation) included in OCI | $ 0 | $ 1 | $ 4 | $ 5 |  |  |  |
Number of fixed maturities in an unrealized loss position | Security | 7,253 |  | 7,253 |  |  |  |  |
Credit losses recognized in net income for mortgage-backed securities | $ 0 | 0 | $ 0 | 0 |  |  |  |
Credit losses recognized in net income for corporate securities | $ 5 | $ 6 | $ 9 | $ 10 |  |  |  |
Percentage of mortgage-backed securities represented by investments in US government agency bonds | 80.00% |  | 80.00% |  |  |  |  | 83.00%
Reinsurance recoverable on losses and loss expenses | $ 11,775 |  | $ 11,775 |  |  |  |  | $ 11,992
Insurance and reinsurance balances payable | 4,602 |  | 4,602 |  |  |  |  | 4,095
Unearned premiums | 8,879 |  | 8,879 |  |  |  |  | $ 8,222
ABR Reinsurance Capital Holdings Ltd. [Member] |  |  |  |  |  |  |  |
Investment [Line Items] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 11.30% |  |
Investments in partially-owned insurance companies |  |  |  |  |  | $ 20 | $ 70 |
Warrants & Rights Outstanding |  |  |  |  |  |  | 0.50% |
Ceded Premiums Written | 35 |  | 35 |  |  |  |  |
Ceded Commissions | 11 |  | 11 |  |  |  |  |
Reinsurance recoverable on losses and loss expenses | 5 |  | 5 |  |  |  |  |
Insurance and reinsurance balances payable | $ 18 |  | $ 18 |  |  |  |  |

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