XML 140 R127.htm IDEA: XBRL DOCUMENT v3.25.1
Liability For Unpaid Claims And Claim Adjustment Expenses - Claims and Claim Adjustment Expenses (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
casualty_line
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
May 25, 2022
USD ($)
May 24, 2022
USD ($)
Dec. 31, 2021
USD ($)
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance $ 1,264          
Other short-duration lines not included in claims development table 288 $ 302 $ 305 $ 281 $ 281 $ 288
Total reinsurance recoverables 288          
Insurance lines other than short-duration 241          
Unallocated claim adjustment expenses 74          
Policy and contract claims $ 1,867 $ 1,870 $ 1,786 $ 1,496 $ 1,496 $ 1,455
Major property and casualty lines | casualty_line 4          
Liability            
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance $ 1,041          
Other short-duration lines not included in claims development table 187          
Professional            
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 2          
Other short-duration lines not included in claims development table 0          
Property            
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 198          
Other short-duration lines not included in claims development table 12          
Specialty            
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 4          
Other short-duration lines not included in claims development table 70          
Other short-duration lines not included in claims development table            
Claims Development [Line Items]            
Total liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 19          
Other short-duration lines not included in claims development table $ 19