v3.26.1
Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities by Sector) (Details)
$ in Millions
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value $ 20,820 $ 8,111
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses $ 731 $ 649
Fixed maturity securities in continuous unrealized loss position, less than 12 months, number of securities 2,965 1,328
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value $ 35,805 $ 38,363
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 5,613 $ 5,282
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, number of securities 4,807 5,093
U.S. corporate    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value $ 9,655 $ 4,160
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 427 395
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 18,194 19,089
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 2,907 2,702
Foreign corporate    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,785 1,382
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 137 179
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 5,318 5,259
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 928 818
RMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,484 818
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 70 49
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 4,026 4,361
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 553 530
U.S. government and agency    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,304 600
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 29 10
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 1,961 2,255
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 626 600
ABS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 1,815 513
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 10 2
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 671 751
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 44 53
CMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 1,176 329
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 14 2
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 3,672 4,291
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 223 224
State and political subdivision    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 495 255
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 37 7
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 1,515 1,799
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 265 293
Foreign government    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 106 54
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 7 5
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 448 558
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 67 $ 62