Reinsurance (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
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| SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] | ||
| Percentage of ceded earned premiums to gross earned premiums | 38.00% | 36.00% |
| Percentage of assumed earned premiums to net earned premiums | 24.00% | 24.00% |
| Program services and other fronting [Member] | ||
| SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] | ||
| Gross losses and loss adjustment expenses | $ 603.7 | $ 496.6 |
| X | ||||||||||
- Definition Percentage of ceded premiums earned by the entity to gross premiums earned. No definition available.
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| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| 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/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Percentage of assumed premium earned to premium earned after effects of reinsurance, as disclosed in supplementary reinsurance information. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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