v3.26.3
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Major Portfolio Segment and Specific Loan Class) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]    
Loans held for sale $ 49 $ 201
Total loans and leases 62,472 60,900
Sales-type or direct financing leases 331 367
Commercial:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 32,410 31,679
Commercial: | Commercial and industrial    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 18,758 18,111
Commercial: | Owner-occupied    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 9,357 9,274
Commercial: | Municipal    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 4,295 4,294
Commercial real estate:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 14,155 13,396
Commercial real estate: | Term    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 11,747 11,234
Commercial real estate: | Construction and land development    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 2,408 2,162
Consumer:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 15,907 15,825
Consumer: | 1-4 family residential    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 10,370 10,462
Consumer: | Home equity credit line    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 4,134 3,950
Consumer: | Construction and other consumer real estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 751 782
Consumer: | Bankcard and other revolving plans    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 539 515
Consumer: | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases $ 113 $ 116