v3.26.1
Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities by Sector) (Details)
$ in Millions
Mar. 31, 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 $ 18,574 $ 8,056
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses $ 748 $ 648
Fixed maturity securities in continuous unrealized loss position, less than 12 months, number of securities 2,792 1,313
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value $ 35,878 $ 37,860
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 5,703 $ 5,188
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, number of securities 4,840 5,035
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 $ 8,736 $ 4,126
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 455 394
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 17,985 18,777
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 2,962 2,637
Foreign corporate    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,616 1,380
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 164 179
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 5,185 5,203
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 958 812
RMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,118 822
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 65 48
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 4,100 4,338
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 540 523
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 1,097 587
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 27 10
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 2,017 2,229
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 612 591
ABS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,229 513
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 9 2
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 702 749
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 44 54
CMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 1,267 323
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 10 3
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 3,726 4,227
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 221 219
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 411 251
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 10 7
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 1,658 1,777
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 295 290
Foreign government    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 100 54
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 8 5
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 505 560
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 71 $ 62