v3.26.1
FAIR VALUE - Schedule of Carrying Values and Estimated Fair Values for Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial Assets    
Investment in marketable equity securities $ 156 $ 127
Investment securities available for sale 33,983 31,790
Investment securities held to maturity 9,418 9,647
Derivative assets - Non-Designated Derivatives 508 534
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 466 494
Carrying Value    
Financial Assets    
Cash and due from banks 1,519 801
Interest-earning deposits at banks 21,132 19,801
Securities purchased under agreements to resell 737 232
Investment in marketable equity securities 156 127
Investment securities available for sale 33,983 31,790
Investment securities held to maturity 9,418 9,647
Loans held for sale 90 799
Net loans 147,624 144,346
Accrued interest receivable 943 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 45 32
Financial Liabilities    
Deposits with no stated maturity 158,300 150,342
Time deposits 15,127 11,236
Credit balances of factoring clients 1,339 1,148
Securities sold under customer repurchase agreements 152 224
Long-term borrowings 31,951 35,712
Accrued interest payable 167 140
Carrying Value | Non-qualifying Hedges    
Financial Assets    
Derivative assets - Non-Designated Derivatives 508 534
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 463 494
Estimated Fair Value    
Financial Assets    
Cash and due from banks 1,519 801
Interest-earning deposits at banks 21,132 19,801
Securities purchased under agreements to resell 737 232
Investment in marketable equity securities 156 127
Investment securities available for sale 33,983 31,790
Investment securities held to maturity 8,214 8,491
Loans held for sale 90 799
Net loans 148,238 145,362
Accrued interest receivable 943 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 68 50
Financial Liabilities    
Deposits with no stated maturity 158,300 150,342
Time deposits 15,100 11,227
Credit balances of factoring clients 1,339 1,148
Securities sold under customer repurchase agreements 152 224
Long-term borrowings 31,845 35,795
Accrued interest payable 167 140
Estimated Fair Value | Level 1    
Financial Assets    
Cash and due from banks 1,519 801
Interest-earning deposits at banks 21,132 19,801
Securities purchased under agreements to resell 0 0
Investment in marketable equity securities 69 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 737 232
Investment in marketable equity securities 87 77
Investment securities available for sale 33,963 31,767
Investment securities held to maturity 8,214 8,491
Loans held for sale 56 781
Net loans 1,552 1,580
Accrued interest receivable 943 912
Federal Home Loan Bank stock 20 20
Mortgage servicing rights 0 0
Financial Liabilities    
Deposits with no stated maturity 158,300 150,342
Time deposits 15,100 11,227
Credit balances of factoring clients 0 0
Securities sold under customer repurchase agreements 152 224
Long-term borrowings 31,845 35,795
Accrued interest payable 167 140
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 34 18
Net loans 146,686 143,782
Accrued interest receivable 0 0
Federal Home Loan Bank stock 0 0
Mortgage servicing rights 68 50
Financial Liabilities    
Deposits with no stated maturity 0 0
Time deposits 0 0
Credit balances of factoring clients 1,339 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 508 534
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 463 494
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 458 505
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives 463 494
Estimated Fair Value | Non-qualifying Hedges | Level 3    
Financial Assets    
Derivative assets - Non-Designated Derivatives 50 29
Financial Liabilities    
Derivative liabilities - Non-Designated Derivatives $ 0 $ 0