v3.26.1
Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Credit-Contingent Provisions [Line Items]    
Derivative, Net Liability Position, Aggregate Fair Value $ 819 $ 891
Offsetting Liabilities [Line Items]    
Derivative assets (1) 5,611 5,388
Derivative liabilities (1) 2,959 2,915
Offsetting Assets [Line Items]    
Gross estimated fair value of derivative assets 5,689 5,475
Gross estimated fair value of derivative liabilities 2,995 2,908
Derivative assets (1) 5,611 5,388
Derivative liabilities (1) 2,959 2,915
Credit Derivatives [Line Items]    
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 5 3
Estimated Fair Value of Derivatives in Net Liability Position 819 891
Collateral Already Posted, Aggregate Fair Value 1,165 1,289
Gross estimated fair value of derivative liabilities 2,995 2,908
Gross estimated fair value of derivative assets 5,689 5,475
Derivative Asset, Fair Value, Amount Offset Against Collateral 37 16
Derivative assets (1) 5,611 5,388
Derivative liabilities (1) 2,959 2,915
Derivative Liability, Fair Value, Amount Offset Against Collateral 8 2
Collateral Securities Repledged, Delivered, or Used 5  
Fair Value of Securities Received as Collateral that Can be Resold or Repledged 0  
Over the Counter [Member]    
Offsetting Assets [Line Items]    
Gross estimated fair value of derivative assets 5,506 5,406
Gross estimated fair value of derivative liabilities 2,963 2,897
Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset 2,144 2,006
Derivative Asset, Collateral, Obligation to Return Cash, Offset 1,948 1,620
Derivative Liability, Collateral, Right to Reclaim Cash, Offset 0 0
Derivative Asset, Collateral, Obligation to Return Securities, Offset 1,391 1,772
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 812 890
Credit Derivatives [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset (2,144) (2,006)
Derivative Liability, Not Offset, Policy Election Deduction (2,144) (2,006)
Excess securities collateral received on derivatives 319 336
Gross estimated fair value of derivative liabilities 2,963 2,897
Derivative, Collateral, Right to Reclaim Securities 754 798
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset (1,948) (1,620)
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset 0 0
Gross estimated fair value of derivative assets 5,506 5,406
Derivative Asset, Collateral, Obligation to Return Securities, Offset (1,391) (1,772)
Derivative Liability, Collateral, Right to Reclaim Securities, Offset (812) (890)
Derivative Liability, Not Offset, Policy Election Deduction 2,144 2,006
Derivative Liability, Collateral, Right to Reclaim Cash, Offset 0 0
Derivative Asset, Collateral, Obligation to Return Cash, Offset 1,948 1,620
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 812 890
Exchange Cleared [Member]    
Offsetting Assets [Line Items]    
Gross estimated fair value of derivative assets 183 66
Gross estimated fair value of derivative liabilities 30 11
Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset 13 5
Derivative Asset, Collateral, Obligation to Return Cash, Offset 156 56
Derivative Liability, Collateral, Right to Reclaim Cash, Offset 0 0
Derivative Asset, Collateral, Obligation to Return Securities, Offset 0 0
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 16 5
Credit Derivatives [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset (13) (5)
Derivative Liability, Not Offset, Policy Election Deduction (13) (5)
Gross estimated fair value of derivative liabilities 30 11
Derivative, Collateral, Right to Reclaim Securities 469 465
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset (156) (56)
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset 0 0
Gross estimated fair value of derivative assets 183 66
Derivative Asset, Collateral, Obligation to Return Securities, Offset 0 0
Derivative Liability, Collateral, Right to Reclaim Securities, Offset (16) (5)
Derivative Liability, Not Offset, Policy Election Deduction 13 5
Derivative Liability, Collateral, Right to Reclaim Cash, Offset 0 0
Derivative Asset, Collateral, Obligation to Return Cash, Offset 156 56
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 16 5
Exchange Traded [Member]    
Offsetting Assets [Line Items]    
Gross estimated fair value of derivative assets 0 3
Gross estimated fair value of derivative liabilities 2 0
Derivative Asset, Collateral, Obligation to Return Securities, Offset 0 0
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 2 0
Credit Derivatives [Line Items]    
Gross estimated fair value of derivative liabilities 2 0
Derivative, Collateral, Right to Reclaim Securities 88 93
Gross estimated fair value of derivative assets 0 3
Derivative Asset, Collateral, Obligation to Return Securities, Offset 0 0
Derivative Liability, Collateral, Right to Reclaim Securities, Offset (2) 0
Derivative Liability, Collateral, Right to Reclaim Securities, Offset 2 0
Derivatives Not Subject To Credit-Contingent Provisions    
Credit-Contingent Provisions [Line Items]    
Derivative, Net Liability Position, Aggregate Fair Value 0 10
Credit Derivatives [Line Items]    
Estimated Fair Value of Derivatives in Net Liability Position 0 10
Collateral Already Posted, Aggregate Fair Value 0 10
Derivatives Subject To Credit-Contingent Provisions [Member]    
Credit-Contingent Provisions [Line Items]    
Derivative, Net Liability Position, Aggregate Fair Value 819 881
Credit Derivatives [Line Items]    
Estimated Fair Value of Derivatives in Net Liability Position 819 881
Collateral Already Posted, Aggregate Fair Value 1,165 1,279
StatementOfFinancialPositionLocationBalance [Axis]: us-gaap:DerivativeAssets    
Offsetting Liabilities [Line Items]    
Derivative assets (1) 78 87
Offsetting Assets [Line Items]    
Derivative assets (1) 78 87
Credit Derivatives [Line Items]    
Derivative assets (1) 78 87
StatementOfFinancialPositionLocationBalance [Axis]: us-gaap:DerivativeLiabilities    
Offsetting Liabilities [Line Items]    
Derivative liabilities (1) 36 (7)
Offsetting Assets [Line Items]    
Derivative liabilities (1) 36 (7)
Credit Derivatives [Line Items]    
Derivative liabilities (1) $ 36 $ (7)