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 $ 18,879 $ 8,111
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses $ 752 $ 649
Fixed maturity securities in continuous unrealized loss position, less than 12 months, number of securities 2,821 1,328
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value $ 36,331 $ 38,363
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 5,802 $ 5,282
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, number of securities 4,897 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 $ 8,832 $ 4,160
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 458 395
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 18,267 19,089
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 3,031 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 2,623 1,382
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 5,228 5,259
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 964 818
RMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,120 818
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 65 49
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 4,123 4,361
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 547 530
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 1,272 600
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 2,042 2,255
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 621 600
ABS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 2,240 513
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 702 751
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 45 53
CMBS    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 1,271 329
Fixed maturity securities in continuous unrealized loss position, less than 12 months, gross unrealized losses 11 2
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, estimated fair value 3,789 4,291
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 225 224
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 422 255
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 1,675 1,799
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses 298 293
Foreign government    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities in continuous unrealized loss position, less than 12 months, estimated fair value 99 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 505 558
Fixed maturity securities in continuous unrealized loss position, 12 months or greater, gross unrealized losses $ 71 $ 62