Premiums and Reinsurance Related Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Written premiums: | ||||
| Written premiums, direct | $ 3,811,809 | $ 3,610,784 | $ 7,282,995 | $ 6,921,677 |
| Written premiums, assumed | 332,191 | 366,985 | 646,771 | 740,031 |
| Written premiums, ceded | (713,766) | (626,330) | (1,325,186) | (1,176,966) |
| Total net premiums written | 3,430,234 | 3,351,439 | 6,604,580 | 6,484,742 |
| Earned premiums: | ||||
| Earned premiums, direct | 3,496,543 | 3,335,252 | 6,920,685 | 6,569,095 |
| Earned premiums, assumed | 329,359 | 336,521 | 644,293 | 676,118 |
| Earned premiums, ceded | (638,513) | (573,588) | (1,262,417) | (1,134,647) |
| Earned premiums | 3,187,389 | 3,098,185 | 6,302,561 | 6,110,566 |
| Ceded losses and loss expenses incurred | 526,426 | 354,923 | 884,166 | 669,175 |
| Ceded commissions and brokerage | $ 156,093 | $ 135,919 | $ 309,041 | $ 275,523 |
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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 commission revenue from buying and selling securities on behalf of customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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, 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 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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