v3.25.4
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary Aging Analysis, Modified) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total $ 663 $ 470
Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 631 457
Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 32 13
30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 26 4
90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 6 9
Commercial    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 213 128
Commercial | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 186 116
Commercial | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 27 12
Commercial | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 26 3
Commercial | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 9
Commercial | Commercial and industrial    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 183 105
Commercial | Commercial and industrial | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 162 102
Commercial | Commercial and industrial | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 21 3
Commercial | Commercial and industrial | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 21 2
Commercial | Commercial and industrial | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 1
Commercial | Owner-occupied    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 30 12
Commercial | Owner-occupied | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 24 11
Commercial | Owner-occupied | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 6 1
Commercial | Owner-occupied | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 5 1
Commercial | Owner-occupied | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 0
Commercial | Municipal    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total   11
Commercial | Municipal | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total   3
Commercial | Municipal | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total   8
Commercial | Municipal | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total   0
Commercial | Municipal | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total   8
Commercial real estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 441 332
Commercial real estate | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 436 332
Commercial real estate | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 5 0
Commercial real estate | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Commercial real estate | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 5 0
Commercial real estate | Term    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 414 289
Commercial real estate | Term | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 409 289
Commercial real estate | Term | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 5 0
Commercial real estate | Term | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Commercial real estate | Term | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 5 0
Commercial real estate | Construction and land development    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 27 43
Commercial real estate | Construction and land development | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 27 43
Commercial real estate | Construction and land development | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Commercial real estate | Construction and land development | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Commercial real estate | Construction and land development | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 9 10
Consumer | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 9 9
Consumer | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 1
Consumer | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 1
Consumer | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | 1-4 family residential    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 7 7
Consumer | 1-4 family residential | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 7 6
Consumer | 1-4 family residential | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 1
Consumer | 1-4 family residential | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 1
Consumer | 1-4 family residential | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Home equity credit line    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 2
Consumer | Home equity credit line | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 2
Consumer | Home equity credit line | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Home equity credit line | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Home equity credit line | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Bankcard and other revolving plans    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 1
Consumer | Bankcard and other revolving plans | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 1 1
Consumer | Bankcard and other revolving plans | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Bankcard and other revolving plans | 30-89 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total 0 0
Consumer | Bankcard and other revolving plans | 90+ days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total $ 0 $ 0