v3.26.3
FAIR VALUE - Schedule of Carrying Values and Estimated Fair Values for Financial Instruments (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Financial Assets    
Investment in marketable equity securities $ 112 $ 127
Investment securities available for sale 35,606 31,790
Investment securities held to maturity 9,157 9,647
Carrying Value    
Financial Assets    
Cash and due from banks 981 801
Interest-earning deposits at banks 18,290 19,801
Securities purchased under agreements to resell 197 232
Investment in marketable equity securities 112 127
Investment securities available for sale 35,606 31,790
Investment securities held to maturity 9,157 9,647
Loans held for sale 131 799
Net loans 153,833 144,346
Accrued interest receivable 1,007 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 46 32
Financial Liabilities    
Deposits with no stated maturity 167,122 150,342
Time deposits 18,142 11,236
Credit balances of factoring clients 1,578 1,148
Securities sold under customer repurchase agreements 116 224
Long-term borrowings 24,273 35,712
Accrued interest payable 180 140
Carrying Value | Non-qualifying Hedges    
Financial Assets    
Derivative assets - Non-Designated Derivatives 717 534
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 806 494
Estimated Fair Value    
Financial Assets    
Cash and due from banks 981 801
Interest-earning deposits at banks 18,290 19,801
Securities purchased under agreements to resell 197 232
Investment in marketable equity securities 112 127
Investment securities available for sale 35,606 31,790
Investment securities held to maturity 7,644 8,491
Loans held for sale 131 799
Net loans 153,283 145,362
Accrued interest receivable 1,007 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 80 50
Financial Liabilities    
Deposits with no stated maturity 167,122 150,342
Time deposits 18,077 11,227
Credit balances of factoring clients 1,578 1,148
Securities sold under customer repurchase agreements 116 224
Long-term borrowings 24,154 35,795
Accrued interest payable 180 140
Estimated Fair Value | Level 1    
Financial Assets    
Cash and due from banks 981 801
Interest-earning deposits at banks 18,290 19,801
Securities purchased under agreements to resell 0 0
Investment in marketable equity securities 52 50
Investment securities available for sale 0 0
Investment securities held to maturity 0 0
Loans held for sale 0 0
Net loans 0 0
Accrued interest receivable 0 0
Federal Home Loan Bank stock 0 0
Mortgage servicing rights 0 0
Financial Liabilities    
Deposits with no stated maturity 0 0
Time deposits 0 0
Credit balances of factoring clients 0 0
Securities sold under customer repurchase agreements 0 0
Long-term borrowings 0 0
Accrued interest payable 0 0
Estimated Fair Value | Level 2    
Financial Assets    
Cash and due from banks 0 0
Interest-earning deposits at banks 0 0
Securities purchased under agreements to resell 197 232
Investment in marketable equity securities 60 77
Investment securities available for sale 35,586 31,767
Investment securities held to maturity 7,644 8,491
Loans held for sale 48 781
Net loans 1,560 1,580
Accrued interest receivable 1,007 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 0 0
Financial Liabilities    
Deposits with no stated maturity 167,122 150,342
Time deposits 18,077 11,227
Credit balances of factoring clients 0 0
Securities sold under customer repurchase agreements 116 224
Long-term borrowings 24,154 35,795
Accrued interest payable 180 140
Estimated Fair Value | Level 3    
Financial Assets    
Cash and due from banks 0 0
Interest-earning deposits at banks 0 0
Securities purchased under agreements to resell 0 0
Investment in marketable equity securities 0 0
Investment securities available for sale 20 23
Investment securities held to maturity 0 0
Loans held for sale 83 18
Net loans 151,723 143,782
Accrued interest receivable 0 0
Federal Home Loan Bank stock 0 0
Mortgage servicing rights 80 50
Financial Liabilities    
Deposits with no stated maturity 0 0
Time deposits 0 0
Credit balances of factoring clients 1,578 1,148
Securities sold under customer repurchase agreements 0 0
Long-term borrowings 0 0
Accrued interest payable 0 0
Estimated Fair Value | Non-qualifying Hedges    
Financial Assets    
Derivative assets - Non-Designated Derivatives 717 534
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 806 494
Estimated Fair Value | Non-qualifying Hedges | Level 1    
Financial Assets    
Derivative assets - Non-Designated Derivatives 0 0
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 0 0
Estimated Fair Value | Non-qualifying Hedges | Level 2    
Financial Assets    
Derivative assets - Non-Designated Derivatives 672 505
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 805 494
Estimated Fair Value | Non-qualifying Hedges | Level 3    
Financial Assets    
Derivative assets - Non-Designated Derivatives 45 29
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives $ 1 $ 0