Reinsurance (Effect Of Reinsurance And Retrocessional Reinsurance On Losses) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Effects of Reinsurance [Line Items] | ||
| Net losses and loss adjustment expenses | $ 1,166,817 | $ 1,254,665 |
| Underwriting [Member] | ||
| Effects of Reinsurance [Line Items] | ||
| Gross losses and loss adjustment expenses | 1,433,996 | 1,673,509 |
| Ceded losses and loss adjustment expenses | (267,480) | (418,927) |
| Net losses and loss adjustment expenses | $ 1,166,516 | $ 1,254,582 |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| 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
|
| X | ||||||||||
- 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
|
| 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
|
| X | ||||||||||
- Details
|