Reinsurance - Schedule of Effects of Reinsurance on Premiums and Future Policy and Other Policy Benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Insurance [Abstract] | |||
| Direct | $ 1,054 | $ 1,089 | $ 10,525 |
| Reinsurance assumed | 1,661 | 313 | 2,313 |
| Reinsurance ceded | (87) | (84) | (89) |
| Total premiums | 2,628 | 1,318 | 12,749 |
| Direct | 2,985 | 2,779 | 12,321 |
| Reinsurance assumed | 1,722 | 550 | 2,389 |
| Reinsurance ceded | (274) | (275) | (276) |
| Total future policy and other policy benefits | $ 4,433 | $ 3,054 | $ 14,434 |
| X | ||||||||||
- Definition Amount of earned premiums assumed from other entities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of earned premiums ceded to other entities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before 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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- References No definition available.
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- 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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- Definition Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- 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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- 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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