| **Consolidated Statements Of Comprehensive Income Consolidated Statements Of Comprehensive Income (USD $)In Millions, unless otherwise specified**        | 12 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| Net income (loss)                                                                                                                                         | $ 517           | $ 421 | $ 164 |
| Unrealized gains on investments available-for-sale                                                                                                        | 299             | 251 | 155 |
| Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Before Tax | 54              | (9) | (16) |
| Other Comprehensive Income, Change in Life Deferred Acquistion Costs, Life Policy Reserves and Other, Net of Tax                                          | 22              | (14) | (7) |
| Other Comprehensive Income (Loss), Net of Tax                                                                                                             | 375             | 228 | 132 |
| COMPREHENSIVE INCOME                                                                                                                                      | $ 892           | $ 649 | $ 296 |

| X                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Other Comprehensive Income, Change in Life Deferred Acquistion Costs, Life Policy Reserves and Other, Net of Tax
+ References
No definition available.
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| - Definition
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Actuarial Loss And Prior Service Cost Arising During Period Net of Tax
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No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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| - Definition
Amount after tax and reclassification adjustments of other comprehensive income (loss).
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.
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