v3.25.4
Investments - Components of net realized gains (losses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Components of net realized capital gains (losses)      
Sales of fixed maturity securities $ (809) $ (1,194) $ (351)
Index-Linked interest credited embedded derivatives, net of related hedges 1,900 859 1,500
Net realized losses (3,958) (1,883) (3,572)
Excluding Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Net realized losses (2,185) (1,117) (1,614)
Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Net realized losses (1,773) (766) (1,958)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative      
Components of net realized capital gains (losses)      
Sales of fixed maturity securities (809) (1,194) (351)
Intent to sell (275) (47) 0
Change in allowance for credit losses on fixed maturity securities (152) (244) (171)
Foreign exchange transactions, net of related hedges (136) 141 (205)
Index-Linked interest credited embedded derivatives, net of related hedges (400) (19) (776)
All other derivatives and hedge accounting (388) (74) (119)
Sales of alternative investments and real estate investments 36 180 48
Other (139) (60) (60)
Net realized losses (2,285) (1,365) (1,838)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative | Change in allowance for credit losses on loans      
Components of net realized capital gains (losses)      
Change in allowance for credit losses on loans (22) (48) (204)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative | Excluding Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Sales of fixed maturity securities (789) (1,141) (278)
Intent to sell (275) (15) 0
Change in allowance for credit losses on fixed maturity securities (131) (237) (162)
Foreign exchange transactions, net of related hedges (145) 134 (195)
Index-Linked interest credited embedded derivatives, net of related hedges (400) (19) (776)
All other derivatives and hedge accounting (334) 128 (53)
Sales of alternative investments and real estate investments 33 159 50
Other (120) (60) (62)
Net realized losses (2,185) (1,117) (1,614)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative | Excluding Fortitude Re Funds Withheld Assets | Change in allowance for credit losses on loans      
Components of net realized capital gains (losses)      
Change in allowance for credit losses on loans (24) (66) (138)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative | Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Sales of fixed maturity securities (20) (53) (73)
Intent to sell 0 (32) 0
Change in allowance for credit losses on fixed maturity securities (21) (7) (9)
Foreign exchange transactions, net of related hedges 9 7 (10)
Index-Linked interest credited embedded derivatives, net of related hedges 0 0 0
All other derivatives and hedge accounting (54) (202) (66)
Sales of alternative investments and real estate investments 3 21 (2)
Other (19) 0 2
Net realized losses (100) (248) (224)
Excluding Modified Coinsurance And Funds Withheld Embedded Derivative | Fortitude Re Funds Withheld Assets | Change in allowance for credit losses on loans      
Components of net realized capital gains (losses)      
Change in allowance for credit losses on loans 2 18 (66)
Net realized losses on Fortitude Re funds withheld embedded derivatives      
Components of net realized capital gains (losses)      
Net realized losses (1,673) (518) (1,734)
Net realized losses on Fortitude Re funds withheld embedded derivatives | Excluding Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Net realized losses 0 0 0
Net realized losses on Fortitude Re funds withheld embedded derivatives | Fortitude Re Funds Withheld Assets      
Components of net realized capital gains (losses)      
Net realized losses $ (1,673) $ (518) $ (1,734)