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Investments (Narrative) (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) securities | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) securities
Investment Narrative [Line Items] |  |  |
Accounts Receivable, Allowance for Credit Loss | $ 2 |  |
Document Period End Date | Mar. 31, 2020 |  |
Impairment Losses On Securities Intended To Be Sold | $ 1 |  |
Allowance For Credit Losses Related To High Yield Securities | 33 |  |
AOCI, Debt Securities, Available-for-sale with Allowance for Credit Loss, Cumulative Gain (Loss), after Tax | 2 | $ 4 |
Sales of fixed maturity securities available-for-sale | 2,141 | 3,140 |
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash | 5 |  | $ 1
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments | 8 | 19 |
Available-for-sale Securities, Gross Realized Gains | $ 27 | 28 |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities | 3,102 |  | 1,072
Securities As Percentage Of Consolidated Stockholder Equity | 10.00% |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 100.00% |  | 100.00%
Funds withheld at interest | $ 5,258 |  | $ 5,662
Funds Held Under Reinsurance Agreements Asset Specific Client | 3,200 |  |
Gain (Loss) on Sale of Equity Investments | $ (23) | $ 4 |
CALIFORNIA |  |  |
Investment Narrative [Line Items] |  |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 15.20% |  |
TEXAS |  |  |
Investment Narrative [Line Items] |  |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 14.70% |  |
GEORGIA |  |  |
Investment Narrative [Line Items] |  |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 8.70% |  |
CANADA |  |  |
Investment Narrative [Line Items] |  |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 2.90% |  |
UNITED KINGDOM |  |  |
Investment Narrative [Line Items] |  |  |
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total | 0.90% |  |

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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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- Definition The amount represents the total percentage of each property type in comparison to the total of mortgage loans whose balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio. + References No definition available. + Details
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