v3.26.1
Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Credit Derivatives [Line Items]    
336000000 $ 2 $ 3
Customer Securities for which Entity has Right to Sell or Repledge, Fair Value of Securities Sold or Repledged 0  
Estimated Fair Value of Derivatives in Net Liability Position 731 891
Derivative assets (1) 5,744 5,388
Exchange Traded [Member]    
Credit Derivatives [Line Items]    
Derivative Asset, Not Offset, Policy Election Deduction (1) 0
Derivative Liability, Not Offset, Policy Election Deduction (1) 0
Derivative, Collateral, Right to Reclaim Securities 81 93
Over the Counter [Member]    
Credit Derivatives [Line Items]    
Derivative Asset, Not Offset, Policy Election Deduction (2,006) (2,006)
Derivative Liability, Not Offset, Policy Election Deduction (2,006) (2,006)
Excess securities collateral received on derivatives 353 336
Derivative, Collateral, Right to Reclaim Securities 787 798
Exchange Cleared [Member]    
Credit Derivatives [Line Items]    
Derivative Asset, Not Offset, Policy Election Deduction (2) (5)
Derivative Liability, Not Offset, Policy Election Deduction (2) (5)
Derivative, Collateral, Right to Reclaim Securities 481 465
Fixed maturity securities AFS    
Credit Derivatives [Line Items]    
Estimated Fair Value of Collateral Provided 1,163 1,289
Derivatives Subject To Credit-Contingent Provisions [Member]    
Credit Derivatives [Line Items]    
Estimated Fair Value of Derivatives in Net Liability Position 717 881
Derivatives Subject To Credit-Contingent Provisions [Member] | Fixed maturity securities AFS    
Credit Derivatives [Line Items]    
Estimated Fair Value of Collateral Provided 1,149 1,279
Derivatives Not Subject To Credit-Contingent Provisions    
Credit Derivatives [Line Items]    
Estimated Fair Value of Derivatives in Net Liability Position 14 10
Derivatives Not Subject To Credit-Contingent Provisions | Fixed maturity securities AFS    
Credit Derivatives [Line Items]    
Estimated Fair Value of Collateral Provided $ 14 $ 10