v3.26.1
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Selected Information on Modified Loans) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 259 $ 259 $ 423 $ 420
Percentage of total loans 0.40% 0.40% 0.70% 0.70%
Unfunded lending commitments on troubled debt restructuring $ 19 $ 38 $ 19 $ 38
Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 189 251 349 398
Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 8
Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 70 8 74 14
Extended Maturity and Interest Rate Reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 67   68  
Commercial:        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 46 $ 96 $ 72
Percentage of total loans   0.10% 0.30% 0.20%
Commercial: | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 0 $ 0 $ 0
Commercial: | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   46 92 72
Commercial: | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Commercial: | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Commercial: | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 4 0
Commercial: | Commercial and industrial        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 34 $ 45 $ 63 $ 67
Percentage of total loans 0.20% 0.30% 0.30% 0.40%
Commercial: | Commercial and industrial | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 0 $ 0 $ 0 $ 0
Commercial: | Commercial and industrial | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 32 45 59 67
Commercial: | Commercial and industrial | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial: | Commercial and industrial | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial: | Commercial and industrial | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 2 0 4 0
Commercial: | Owner-occupied        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 1 $ 33 $ 5
Percentage of total loans   0.00% 0.40% 0.10%
Commercial: | Owner-occupied | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 0 $ 0 $ 0
Commercial: | Owner-occupied | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   1 33 5
Commercial: | Owner-occupied | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Commercial: | Owner-occupied | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Commercial: | Owner-occupied | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Commercial real estate:        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 225 $ 212 $ 325 $ 341
Percentage of total loans 1.60% 1.60% 2.30% 2.50%
Commercial real estate: | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 0 $ 0 $ 0 $ 0
Commercial real estate: | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 157 205 257 326
Commercial real estate: | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial real estate: | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 8
Commercial real estate: | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 68 7 68 7
Commercial real estate: | Term        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 216 $ 187 $ 316 $ 316
Percentage of total loans 1.80% 1.70% 2.70% 2.80%
Commercial real estate: | Term | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 0 $ 0 $ 0 $ 0
Commercial real estate: | Term | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 148 180 248 301
Commercial real estate: | Term | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial real estate: | Term | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 8
Commercial real estate: | Term | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 68 7 68 7
Commercial real estate: | Construction and land development        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 9 $ 25 $ 9 $ 25
Percentage of total loans 0.40% 1.00% 0.40% 1.00%
Commercial real estate: | Construction and land development | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 0 $ 0 $ 0 $ 0
Commercial real estate: | Construction and land development | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 9 25 9 25
Commercial real estate: | Construction and land development | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial real estate: | Construction and land development | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis 0 0 0 0
Commercial real estate: | Construction and land development | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis $ 0 0 0 0
Consumer: | 1-4 family residential        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 1 $ 2 $ 7
Percentage of total loans   0.00% 0.00% 0.10%
Consumer: | 1-4 family residential | Interest rate reduction        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 0 $ 0 $ 0
Consumer: | 1-4 family residential | Maturity or term extension        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Consumer: | 1-4 family residential | Principal forgiveness        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Consumer: | 1-4 family residential | Payment deferral        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   0 0 0
Consumer: | 1-4 family residential | Multiple modification types        
Financing Receivable, Modifications [Line Items]        
Amortized cost basis   $ 1 $ 2 $ 7