Reinsurance - Effect of Reinsurance (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jan. 02, 2025 |
Dec. 31, 2024 |
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| Premiums | ||||||
| Premiums | $ (4) | $ (2) | $ (5) | $ (2) | ||
| Policyholder Benefits and Claims Incurred, Assumed and Ceded [Abstract] | ||||||
| Policyholder Benefits and Claims Incurred, Direct | 200 | 205 | 412 | 411 | ||
| Policyholder Benefits and Claims Incurred, Assumed | 24 | 1 | 48 | 2 | ||
| Policyholder Benefits and Claims Incurred, Ceded | (15) | (12) | (44) | (37) | ||
| Policyholder Interest and Other Benefits, Net | 209 | $ 194 | 416 | $ 376 | ||
| Deposit Contracts, Assets | 800 | 800 | $ 900 | |||
| Funds Held under Reinsurance Agreements, Liability, Assumed | 900 | 900 | ||||
| Liabilities related to separate accounts | 104,149 | 104,149 | 98,579 | |||
| Policyholder Account Balance | $ 32,977 | $ 32,977 | $ 29,268 | |||
| Contract Owner account balance uncer coinsurance | $ 3,800 | |||||
| Separate accounts liability under coinsurance | $ 20,600 | |||||
| X | ||||||||||
- Definition Carrying amount of assets as of the balance sheet date pertaining to amounts paid by the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, before effect of policies assumed or ceded, of expense related to provision for policy benefits and costs incurred. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- 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 | ||||||||||
- Definition Amount of reduction of provision for policy benefits and costs incurred for policies ceded. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Contract Owner account balance uncer coinsurance No definition available.
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| X | ||||||||||
- Definition Funds Held under Reinsurance Agreements, Liability, Assumed No definition available.
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| X | ||||||||||
- Definition Policyholder Interest and Other Benefits, Net No definition available.
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| X | ||||||||||
- Definition Separate accounts liability under coinsurance No definition available.
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