v3.26.3
Investments (Amortized Cost and Fair Value of Fixed Maturity Holdings by Industry Type) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Corporate Securities by Investment Sector And Credit Rating [Line Items]    
Amortized Cost $ 121,126 $ 107,264
Fixed maturity securities, available-for-sale 107,757 [1] 101,769 [2]
Corporate Debt Securities [Member]    
Corporate Securities by Investment Sector And Credit Rating [Line Items]    
Amortized Cost 83,446 72,736
Fixed maturity securities, available-for-sale $ 74,727 [1] $ 69,737 [2]
Percentage Of Total Corporate Fixed Maturity Security 100.00% 100.00%
Corporate Debt Securities [Member] | Finance    
Corporate Securities by Investment Sector And Credit Rating [Line Items]    
Amortized Cost $ 25,013 $ 21,367
Fixed maturity securities, available-for-sale $ 22,550 $ 20,489
Percentage Of Total Corporate Fixed Maturity Security 30.10% 29.40%
Corporate Debt Securities [Member] | Industrial    
Corporate Securities by Investment Sector And Credit Rating [Line Items]    
Amortized Cost $ 44,223 $ 39,381
Fixed maturity securities, available-for-sale $ 39,647 $ 37,839
Percentage Of Total Corporate Fixed Maturity Security 53.10% 54.30%
Corporate Debt Securities [Member] | Utility    
Corporate Securities by Investment Sector And Credit Rating [Line Items]    
Amortized Cost $ 14,210 $ 11,988
Fixed maturity securities, available-for-sale $ 12,530 $ 11,409
Percentage Of Total Corporate Fixed Maturity Security 16.80% 16.30%
[1] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of September 30, 2026, the fair value of such investments was $926 million.
[2] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2025, the fair value of such investments was $925 million