v3.26.3
Investments - Amortized Cost and Fair Value of Fixed Maturity by Contractual Maturity (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Due in one year or less, Amortized Cost $ 533  
Due after one year through five years, Amortized Cost 4,589  
Due after five years through ten years, Amortized Cost 4,057  
Due after ten years, Amortized Cost 20,335  
Subtotal 29,514  
Other securities which provide for periodic payments, Amortized Cost 25,981  
Amortized Cost 55,495 $ 55,292
Due in one year or less, Fair Value 530  
Due after one year through five years, Fair Value 4,513  
Due after five years through ten years, Fair Value 3,821  
Due after ten years, Fair Value 16,533  
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total 25,397  
Other securities which provide for periodic payments, Fair Value 25,315  
Total fixed maturity available-for-sale securities 50,712 52,700
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Other securities which provide for periodic payments, Amortized Cost 18,128  
Amortized Cost 18,128 18,847
Other securities which provide for periodic payments, Fair Value 17,849  
Total fixed maturity available-for-sale securities 17,849 18,732
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Other securities which provide for periodic payments, Amortized Cost 4,340  
Amortized Cost 4,340 5,298
Other securities which provide for periodic payments, Fair Value 4,106  
Total fixed maturity available-for-sale securities 4,106 $ 5,155
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Other securities which provide for periodic payments, Amortized Cost 3,513  
Other securities which provide for periodic payments, Fair Value $ 3,360