XML 65 R53.htm IDEA: XBRL DOCUMENT v3.25.3
Investments - Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities $ 12 $ (2) $ 17 $ 10
Net of tax        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments 10 10 20 21
Impairment allowance on securities 0 (12) (6) (14)
Realized gains (losses) on securities 10 (2) 14 7
Change in unrealized 58 190 159 187
Total pretax        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments 13 13 25 27
Impairment allowance on securities (1) (15) (8) (17)
Realized gains (losses) on securities 12 (2) 17 10
Change in unrealized 74 241 201 237
Fixed maturities        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments 0 3 (7) (2)
Impairment allowance on fixed maturity securities (1) (15) (8) (17)
Realized gains (losses) on securities (1) (12) (15) (19)
Change in unrealized 74 241 201 237
Equity securities        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments 13 10 32 29
Realized gains (losses) on securities 13 10 32 29
Change in unrealized 0 0 0 0
Mortgage loans and other investments        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments 0 0 0 0
Impairment allowance on mortgage loans and other investments 0 0 0 0
Realized gains (losses) on securities 0 0 0 0
Change in unrealized 0 0 0 0
Total tax effects        
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments        
Realized gains (losses) on securities before impairments (3) (3) (5) (6)
Impairment allowance on securities 1 3 2 3
Realized gains (losses) on securities (2) 0 (3) (3)
Change in unrealized $ (16) $ (51) $ (42) $ (50)