Reinsurance - Schedule of Direct, Assumed, and Ceded Reinsurance Amounts (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Premiums written: | ||||
| Direct | $ 1,331,836 | $ 1,411,730 | $ 4,163,469 | $ 4,325,386 |
| Assumed | 8,199 | 7,542 | 20,970 | 18,960 |
| Ceded | (217,211) | (211,356) | (615,413) | (607,358) |
| Net | 1,122,824 | 1,207,916 | 3,569,026 | 3,736,988 |
| Premiums earned: | ||||
| Direct | 1,374,205 | 1,387,891 | 4,185,132 | 4,101,417 |
| Assumed | 6,726 | 6,306 | 19,976 | 18,379 |
| Ceded | (200,740) | (189,519) | (592,213) | (568,304) |
| Net | 1,180,191 | 1,204,678 | 3,612,895 | 3,551,492 |
| Loss and loss expense incurred: | ||||
| Direct | 985,205 | 966,358 | 2,748,937 | 2,726,959 |
| Assumed | 6,503 | 5,260 | 20,273 | 15,895 |
| Ceded | (229,012) | (152,587) | (374,744) | (353,600) |
| Net | $ 762,696 | $ 819,031 | $ 2,394,466 | $ 2,389,254 |
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- 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 written 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 of written premiums ceded to other entities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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- 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/exampleRef
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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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- References No definition available.
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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, 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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- References No definition available.
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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/2009/role/commonPracticeRef
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- References No definition available.
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