v3.26.1
Investments - Schedule of Gross Unrealized Losses and Fair Value by Type and Length of Time Held in a Continuous Unrealized Loss Position (Details)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
contract
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
contract
Total unrealized losses      
Fixed income securities, at fair value $ 60,809   $ 59,115
Fixed income securities      
Less than 12 months      
Number of  issues | contract 2,206   874
Fair value $ 31,072   $ 17,417
Unrealized losses $ (354)   $ (139)
12 months or more      
Number of  issues | contract 981   1,345
Fair value $ 3,102   $ 5,394
Unrealized losses (184)   (253)
Total unrealized losses      
Total unrealized losses (538)   (392)
Fixed income securities, at fair value 23   11
Fixed income securities, unrealized losses 3 $ 2  
Fixed income securities, credit loss allowance $ 1   $ 1
U.S. government and agencies      
Less than 12 months      
Number of  issues | contract 139   74
Fair value $ 9,622   $ 11,840
Unrealized losses $ (101)   $ (72)
12 months or more      
Number of  issues | contract 23   54
Fair value $ 65   $ 209
Unrealized losses (2)   (3)
Total unrealized losses      
Total unrealized losses (103)   (75)
Fixed income securities, at fair value $ 12,351   $ 18,133
Municipal      
Less than 12 months      
Number of  issues | contract 144   106
Fair value $ 970   $ 640
Unrealized losses $ (5)   $ (6)
12 months or more      
Number of  issues | contract 385   527
Fair value $ 880   $ 1,423
Unrealized losses (35)   (55)
Total unrealized losses      
Total unrealized losses (40)   (61)
Fixed income securities, at fair value $ 6,334   $ 5,643
Corporate      
Less than 12 months      
Number of  issues | contract 1,400   530
Fair value $ 17,274   $ 3,933
Unrealized losses $ (219)   $ (49)
12 months or more      
Number of  issues | contract 434   640
Fair value $ 2,026   $ 3,677
Unrealized losses (136)   (185)
Total unrealized losses      
Total unrealized losses (355)   (234)
Fixed income securities, at fair value $ 36,407   $ 30,401
Foreign government      
Less than 12 months      
Number of  issues | contract 52   77
Fair value $ 536   $ 553
Unrealized losses $ (5)   $ (9)
12 months or more      
Number of  issues | contract 66   53
Fair value $ 79   $ 40
Unrealized losses (9)   (8)
Total unrealized losses      
Total unrealized losses (14)   (17)
Fixed income securities, at fair value $ 1,625   $ 1,460
ABS      
Less than 12 months      
Number of  issues | contract 369   58
Fair value $ 1,227   $ 205
Unrealized losses $ (10)   $ (2)
12 months or more      
Number of  issues | contract 15   12
Fair value $ 50   $ 42
Unrealized losses (2)   (2)
Total unrealized losses      
Total unrealized losses (12)   (4)
Fixed income securities, at fair value $ 1,971   $ 1,352
MBS      
Less than 12 months      
Number of  issues | contract 102   29
Fair value $ 1,443   $ 246
Unrealized losses $ (14)   $ (1)
12 months or more      
Number of  issues | contract 58   59
Fair value $ 2   $ 3
Unrealized losses 0   0
Total unrealized losses      
Total unrealized losses (14)   (1)
Fixed income securities, at fair value $ 2,121   $ 2,126
Investment grade fixed income securities      
Less than 12 months      
Number of  issues | contract 1,947   694
Fair value $ 29,491   $ 16,899
Unrealized losses $ (320)   $ (123)
12 months or more      
Number of  issues | contract 876   1,212
Fair value $ 2,665   $ 4,793
Unrealized losses (160)   (229)
Total unrealized losses      
Total unrealized losses $ (480)   $ (352)
Below investment grade fixed income securities      
Less than 12 months      
Number of  issues | contract 259   180
Fair value $ 1,581   $ 518
Unrealized losses $ (34)   $ (16)
12 months or more      
Number of  issues | contract 105   133
Fair value $ 437   $ 601
Unrealized losses (24)   (24)
Total unrealized losses      
Total unrealized losses $ (58)   $ (40)