v3.26.1
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Major Portfolio Segment and Specific Loan Class) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]    
Loans held for sale $ 77 $ 201
Total loans and leases 62,481 60,900
Sales-type or direct financing leases 352 367
Commercial:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 32,640 31,679
Commercial: | Commercial and industrial    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 19,131 18,111
Commercial: | Owner-occupied    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 9,336 9,274
Commercial: | Municipal    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 4,173 4,294
Commercial real estate:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 14,063 13,396
Commercial real estate: | Term    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 11,850 11,234
Commercial real estate: | Construction and land development    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 2,213 2,162
Consumer:    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 15,778 15,825
Consumer: | 1-4 family residential    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 10,293 10,462
Consumer: | Home equity credit line    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 4,077 3,950
Consumer: | Construction and other consumer real estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 757 782
Consumer: | Bankcard and other revolving plans    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases 537 515
Consumer: | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans and leases $ 114 $ 116