v3.26.1
Investments - Schedule of Amortized Cost, Gross Unrealized Gains (Losses), Allowance for Credit Losses and Fair Value of Our Fixed Maturity Securities Classified as Available-For-Sale (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]            
Amortized cost $ 48,228   $ 48,150      
Gross unrealized gains 565   871      
Gross unrealized losses (3,507)   (3,236)      
Allowance for credit losses (22) $ (23) (23) $ (25) $ (14) $ (10)
Fair value 45,264   45,762      
U.S. government, agencies and government-sponsored enterprises            
Schedule of Investments [Line Items]            
Amortized cost 4,001   3,999      
Gross unrealized gains 39   66      
Gross unrealized losses (416)   (364)      
Allowance for credit losses 0   0      
Fair value 3,624   3,701      
State and political subdivisions            
Schedule of Investments [Line Items]            
Amortized cost 2,261   2,356      
Gross unrealized gains 7   13      
Gross unrealized losses (269)   (255)      
Allowance for credit losses 0   0      
Fair value 1,999   2,114      
Non-U.S. government            
Schedule of Investments [Line Items]            
Amortized cost 1,393   1,257      
Gross unrealized gains 25   36      
Gross unrealized losses (79)   (76)      
Allowance for credit losses (6) (6) (2)      
Fair value 1,333   1,215      
U.S. corporate            
Schedule of Investments [Line Items]            
Amortized cost 28,016   28,356      
Gross unrealized gains 386   572      
Gross unrealized losses (2,036)   (1,874)      
Allowance for credit losses (11) (10) (8) (10) (6) (4)
Fair value 26,355   27,046      
U.S. corporate | Utilities            
Schedule of Investments [Line Items]            
Amortized cost 4,894   4,798      
Gross unrealized gains 62   95      
Gross unrealized losses (402)   (375)      
Allowance for credit losses (3)   (3)      
Fair value 4,551   4,515      
U.S. corporate | Energy            
Schedule of Investments [Line Items]            
Amortized cost 2,498   2,506      
Gross unrealized gains 52   69      
Gross unrealized losses (129)   (123)      
Allowance for credit losses 0   0      
Fair value 2,421   2,452      
U.S. corporate | Finance and insurance            
Schedule of Investments [Line Items]            
Amortized cost 7,340   7,435      
Gross unrealized gains 67   109      
Gross unrealized losses (536)   (487)      
Allowance for credit losses 0   0      
Fair value 6,871   7,057      
U.S. corporate | Consumer—non-cyclical            
Schedule of Investments [Line Items]            
Amortized cost 4,643   4,591      
Gross unrealized gains 69   98      
Gross unrealized losses (314)   (279)      
Allowance for credit losses (8)   (4)      
Fair value 4,390   4,406      
U.S. corporate | Technology and communications            
Schedule of Investments [Line Items]            
Amortized cost 2,721   2,947      
Gross unrealized gains 38   58      
Gross unrealized losses (279)   (256)      
Allowance for credit losses 0   0      
Fair value 2,480   2,749      
U.S. corporate | Industrial            
Schedule of Investments [Line Items]            
Amortized cost 949   1,030      
Gross unrealized gains 7   14      
Gross unrealized losses (89)   (89)      
Allowance for credit losses 0   (1)      
Fair value 867   954      
U.S. corporate | Capital goods            
Schedule of Investments [Line Items]            
Amortized cost 2,351   2,359      
Gross unrealized gains 45   65      
Gross unrealized losses (117)   (105)      
Allowance for credit losses 0   0      
Fair value 2,279   2,319      
U.S. corporate | Consumer—cyclical            
Schedule of Investments [Line Items]            
Amortized cost 1,270   1,295      
Gross unrealized gains 14   23      
Gross unrealized losses (77)   (69)      
Allowance for credit losses 0   0      
Fair value 1,207   1,249      
U.S. corporate | Transportation            
Schedule of Investments [Line Items]            
Amortized cost 1,100   1,115      
Gross unrealized gains 31   37      
Gross unrealized losses (79)   (77)      
Allowance for credit losses 0   0      
Fair value 1,052   1,075      
U.S. corporate | Other            
Schedule of Investments [Line Items]            
Amortized cost 250   280      
Gross unrealized gains 1   4      
Gross unrealized losses (14)   (14)      
Allowance for credit losses 0   0      
Fair value 237   270      
Non-U.S. corporate            
Schedule of Investments [Line Items]            
Amortized cost 7,322   7,430      
Gross unrealized gains 91   149      
Gross unrealized losses (393)   (379)      
Allowance for credit losses (2) (4) (9) (10) (4) (3)
Fair value 7,018   7,191      
Non-U.S. corporate | Utilities            
Schedule of Investments [Line Items]            
Amortized cost 618   672      
Gross unrealized gains 2   4      
Gross unrealized losses (35)   (36)      
Allowance for credit losses 0   (3)      
Fair value 585   637      
Non-U.S. corporate | Energy            
Schedule of Investments [Line Items]            
Amortized cost 937   957      
Gross unrealized gains 18   27      
Gross unrealized losses (35)   (36)      
Allowance for credit losses (2)   (4)      
Fair value 918   944      
Non-U.S. corporate | Finance and insurance            
Schedule of Investments [Line Items]            
Amortized cost 1,748   1,751      
Gross unrealized gains 24   43      
Gross unrealized losses (83)   (75)      
Allowance for credit losses 0   0      
Fair value 1,689   1,719      
Non-U.S. corporate | Consumer—non-cyclical            
Schedule of Investments [Line Items]            
Amortized cost 593   615      
Gross unrealized gains 3   6      
Gross unrealized losses (65)   (64)      
Allowance for credit losses 0   0      
Fair value 531   557      
Non-U.S. corporate | Technology and communications            
Schedule of Investments [Line Items]            
Amortized cost 781   743      
Gross unrealized gains 6   9      
Gross unrealized losses (66)   (63)      
Allowance for credit losses 0   0      
Fair value 721   689      
Non-U.S. corporate | Industrial            
Schedule of Investments [Line Items]            
Amortized cost 749   769      
Gross unrealized gains 12   19      
Gross unrealized losses (26)   (27)      
Allowance for credit losses 0   0      
Fair value 735   761      
Non-U.S. corporate | Capital goods            
Schedule of Investments [Line Items]            
Amortized cost 725   710      
Gross unrealized gains 7   11      
Gross unrealized losses (32)   (29)      
Allowance for credit losses 0   0      
Fair value 700   692      
Non-U.S. corporate | Consumer—cyclical            
Schedule of Investments [Line Items]            
Amortized cost 226   255      
Gross unrealized gains 1   3      
Gross unrealized losses (10)   (8)      
Allowance for credit losses 0   0      
Fair value 217   250      
Non-U.S. corporate | Transportation            
Schedule of Investments [Line Items]            
Amortized cost 503   491      
Gross unrealized gains 10   15      
Gross unrealized losses (23)   (21)      
Allowance for credit losses 0   0      
Fair value 490   485      
Non-U.S. corporate | Other            
Schedule of Investments [Line Items]            
Amortized cost 442   467      
Gross unrealized gains 8   12      
Gross unrealized losses (18)   (20)      
Allowance for credit losses 0   (2)      
Fair value 432   457      
Residential mortgage-backed            
Schedule of Investments [Line Items]            
Amortized cost 1,099   1,115      
Gross unrealized gains 8   19      
Gross unrealized losses (38)   (34)      
Allowance for credit losses 0   0      
Fair value 1,069   1,100      
Commercial mortgage-backed            
Schedule of Investments [Line Items]            
Amortized cost 1,605   1,536      
Gross unrealized gains 2   3      
Gross unrealized losses (243)   (226)      
Allowance for credit losses (3) $ (3) (4) $ (5) $ (4) $ (3)
Fair value 1,361   1,309      
Other asset-backed            
Schedule of Investments [Line Items]            
Amortized cost 2,531   2,101      
Gross unrealized gains 7   13      
Gross unrealized losses (33)   (28)      
Allowance for credit losses 0   0      
Fair value $ 2,505   $ 2,086