Insurance Contracts - Effect of Reinsurance on Premiums Written and Earned (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
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| SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] | ||||
| Direct Premiums Written | $ 93 | $ 55 | $ 174 | $ 115 |
| Assumed Reinsurance Premiums Written | 20 | 0 | 38 | 0 |
| Ceded Reinsurance Premiums Written | 79 | 100 | 150 | 142 |
| Premiums written, net of reinsurance | (34) | 45 | (62) | 27 |
| Direct Premiums Earned | 79 | 52 | 154 | 98 |
| Assumed Reinsurance Premiums Earned | 17 | 0 | 33 | 0 |
| Ceded Reinsurance Premiums Earned | $ 64 | $ 37 | $ 121 | $ 69 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of earned premiums assumed from other entities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of written premiums assumed from other entities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of earned premiums ceded to other entities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of written premiums ceded to other entities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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/disclosureRef
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- Definition Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums written. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums written. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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