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LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Selected Information on Modified Loans) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 216 | $ 108 | $ 504 | $ 240
Percentage of total loans | 0.40% | 0.20% | 0.80% | 0.40%
Unfunded lending commitments on troubled debt restructuring | $ 29 | $ 8 | $ 29 | $ 8
Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 | 9 | 0 | 9
Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 210 | 49 | 479 | 166
Principal forgiveness |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 2 | 0 | 2 | 2
Payment deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 | 1 | 8 | 2
Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 4 | 49 | 15 | 61
Commercial: |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 81 |  | $ 131 | $ 81
Percentage of total loans | 0.30% |  | 0.40% | 0.30%
Commercial: | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 0 |  | $ 0 | $ 9
Commercial: | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 81 |  | 131 | 48
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 | 2
Commercial: | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 |  | 0 | 22
Commercial: | Commercial and industrial |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 58 | $ 34 | $ 106 | $ 77
Percentage of total loans | 0.30% | 0.20% | 0.60% | 0.50%
Commercial: | Commercial and industrial | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 0 | $ 9 | $ 0 | $ 9
Commercial: | Commercial and industrial | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 58 | 11 | 106 | 44
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 | 1 | 0 | 2
Commercial: | Commercial and industrial | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 | 13 | 0 | 22
Commercial: | Owner-occupied |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 23 |  | $ 25 | $ 1
Percentage of total loans | 0.20% |  | 0.30% | 0.00%
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 | 23 |  | 25 | 1
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: | Municipal |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | $ 3
Percentage of total loans |  |  |  | 0.10%
Commercial: | Municipal | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | $ 0
Commercial: | Municipal | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 3
Commercial: | Municipal | Principal forgiveness |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 0
Commercial: | Municipal | Payment deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 0
Commercial: | Municipal | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 0
Commercial real estate: |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 129 | $ 74 | $ 363 | $ 153
Percentage of total loans | 1.00% | 0.50% | 2.70% | 1.10%
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 | 129 | 38 | 348 | 117
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 | 8 | 0
Commercial real estate: | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 | 36 | 7 | 36
Commercial real estate: | Term |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 128 | $ 69 | $ 337 | $ 146
Percentage of total loans | 1.20% | 0.60% | 3.10% | 1.40%
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 | 128 | 33 | 322 | 110
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 | 8 | 0
Commercial real estate: | Term | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | 0 | 36 | 7 | 36
Commercial real estate: | Construction and land development |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 1 | $ 5 | $ 26 | $ 7
Percentage of total loans | 0.00% | 0.20% | 1.10% | 0.20%
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 | 1 | 5 | 26 | 7
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: |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | $ 10 | $ 6
Percentage of total loans |  |  | 0.10% | 0.00%
Consumer: | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | $ 0 | $ 0
Consumer: | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 0 | 1
Consumer: | Principal forgiveness |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 2 | 2
Consumer: | Payment deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 0 | 0
Consumer: | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 8 | 3
Consumer: | 1-4 family residential |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis | $ 6 |  | $ 9 | $ 4
Percentage of total loans | 0.10% |  | 0.10% | 0.00%
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 | 2 |  | 2 | 2
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 | $ 4 |  | 7 | 2
Consumer: | Home equity credit line |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | $ 1 | $ 1
Percentage of total loans |  |  | 0.00% | 0.00%
Consumer: | Home equity credit line | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | $ 0 | $ 0
Consumer: | Home equity credit line | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 0 | 0
Consumer: | Home equity credit line | Principal forgiveness |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 0 | 0
Consumer: | Home equity credit line | Payment deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | 0 | 0
Consumer: | Home equity credit line | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  | $ 1 | 1
Consumer: | Other |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | $ 1
Percentage of total loans |  |  |  | 0.80%
Consumer: | Other | Interest rate reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | $ 0
Consumer: | Other | Maturity or term extension |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 1
Consumer: | Other | Principal forgiveness |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 0
Consumer: | Other | Payment deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | 0
Consumer: | Other | Multiple modification types |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Amortized cost basis |  |  |  | $ 0

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