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Loss And Loss Adjustment Expense Reserves (Schedule Of Losses And Loss Adjustment Expenses) (Details) - Fire - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Net losses and loss adjustment expenses on Eaton and Palisades fires, As of June 30, 2026 and December 31, 2025    
Gross losses and loss adjustment expenses $ 2,293,719 $ 2,191,752
Subrogation recovered and recoverable - Eaton fire (561,914) (537,506)
Subrogation recovered and recoverable - Palisades fire (50,352) (48,026)
Reinsurance recovered and recoverable (1,293,500) (1,293,500)
Net catastrophe losses and loss adjustment expenses on Eaton and Palisades fires before FAIR Plan 387,953 312,720
Company's share of FAIR Plan losses and loss adjustment expenses 97,276 92,717
Recoupable portion of FAIR Plan losses and loss adjustment expenses (25,000) (25,000)
Net FAIR Plan losses and loss adjustment expenses 72,276 67,717
Net losses and loss adjustment expenses on Eaton and Palisades fires 460,229 $ 380,437
Net losses and loss adjustment expenses on Eaton and Palisades fires, For the Six Months Ended June 30, 2026    
Gross losses and loss adjustment expenses 101,967  
Subrogation recoverable - Eaton fire (24,408)  
Subrogation recovered and recoverable - Palisades fire (2,326)  
Reinsurance recovered and recoverable 0  
Net catastrophe losses and loss adjustment expenses on Eaton and Palisades fires before FAIR Plan 75,233  
Company's share of FAIR Plan losses and loss adjustment expenses 4,559  
Recoupable portion of FAIR Plan losses and loss adjustment expenses 0  
Net FAIR Plan losses and loss adjustment expenses 4,559  
Net losses and loss adjustment expenses on Eaton and Palisades fires $ 79,792