v3.26.1
Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Maturities by Category of Collateral Pledged for Repurchase Agreements and Securities Loaned Transactions (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 80,427 $ 57,944
Securities loaned 119 84
Gross amount of recognized liabilities 80,546 58,028
Overnight and Continuous    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 78,207 57,844
Securities loaned 119 84
Gross amount of recognized liabilities 78,326 57,928
Less Than 30 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 2,208 100
Securities loaned 0 0
Gross amount of recognized liabilities 2,208 100
30-89 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 12 0
Securities loaned 0 0
Gross amount of recognized liabilities 12 0
Greater Than 90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Securities loaned 0 0
Gross amount of recognized liabilities 0 0
U.S. Treasury and agencies    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 75,144 54,117
U.S. Treasury and agencies | Overnight and Continuous    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 73,086 54,117
U.S. Treasury and agencies | Less Than 30 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 2,058 0
U.S. Treasury and agencies | 30-89 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
U.S. Treasury and agencies | Greater Than 90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Residential mortgage-backed securities | Agency    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 265 293
Residential mortgage-backed securities | Overnight and Continuous | Agency    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 265 293
Residential mortgage-backed securities | Less Than 30 Days | Agency    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Residential mortgage-backed securities | 30-89 Days | Agency    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Residential mortgage-backed securities | Greater Than 90 Days | Agency    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Corporate debt securities    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 4,593 3,115
Securities loaned 119 84
Corporate debt securities | Overnight and Continuous    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 4,431 3,015
Securities loaned 119 84
Corporate debt securities | Less Than 30 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 150 100
Securities loaned 0 0
Corporate debt securities | 30-89 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 12 0
Securities loaned 0 0
Corporate debt securities | Greater Than 90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Securities loaned 0 0
Asset-backed securities    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 425 419
Asset-backed securities | Overnight and Continuous    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 425 419
Asset-backed securities | Less Than 30 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Asset-backed securities | 30-89 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements 0 0
Asset-backed securities | Greater Than 90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 0 $ 0