v3.26.1
Investments - Schedule of Net Investment Income by Asset Class (Details) - Retirement Services - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Net Investment Income [Line Items]    
Investment revenue $ 5,177 $ 4,377
Investment expenses (38) (36)
Net investment income 5,139 4,341
AFS securities    
Net Investment Income [Line Items]    
Investment revenue 3,038 2,664
Trading securities    
Net Investment Income [Line Items]    
Investment revenue 122 42
Equity securities    
Net Investment Income [Line Items]    
Investment revenue 16 15
Mortgage loans    
Net Investment Income [Line Items]    
Investment revenue 1,544 1,123
Investment funds    
Net Investment Income [Line Items]    
Investment revenue (6) 38
Funds withheld at interest    
Net Investment Income [Line Items]    
Investment revenue 215 265
Other    
Net Investment Income [Line Items]    
Investment revenue $ 248 $ 230