Related Party Transactions (Effects of Affiliated Reinsurance on Statements of Operations) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Reinsurance Disclosure [Line Items] | ||
| Change in market risk benefits | $ (748) | $ (896) |
| Affiliated Entity | Assumed Reinsurance | ||
| Reinsurance Disclosure [Line Items] | ||
| Premiums | 3 | 2 |
| Policyholder benefits and claims | 7 | 4 |
| Change in market risk benefits | 23 | 30 |
| Other expenses | $ (3) | $ (3) |
| X | ||||||||||
- Definition Assumed Other Expenses - Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services assumed from other insurers as a result of reinsurance arrangements. No definition available.
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| X | ||||||||||
- Definition -- None. No documentation exists for this element. -- No definition available.
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| X | ||||||||||
- Definition Amount of earned premiums assumed from other entities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of gain (loss) from (increase) decrease in fair value of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. Excludes change attributable to instrument-specific credit risk. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of policy benefits and costs incurred for policies assumed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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- Details
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