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Property Casualty Loss and Loss Expenses (Tables)
3 Months Ended
Mar. 31, 2025
Premiums Written, Net [Abstract]  
Consolidated Property Casualty Loss And Loss Expense Reserves
This table summarizes activity for our consolidated property casualty loss and loss expense reserves:
(Dollars in millions)Three months ended March 31,
20252024
Gross loss and loss expense reserves, beginning of period$9,937 $8,975 
Less reinsurance recoverable269 362 
Net loss and loss expense reserves, beginning of period9,668 8,613 
Net incurred loss and loss expenses related to:  
Current accident year1,978 1,370 
Prior accident years(91)(100)
Total incurred1,887 1,270 
Net paid loss and loss expenses related to:  
Current accident year593 205 
Prior accident years806 832 
Total paid1,399 1,037 
Net loss and loss expense reserves, end of period10,156 8,846 
Plus reinsurance recoverable551 332 
Gross loss and loss expense reserves, end of period$10,707 $9,178