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FAIR VALUE (Schedule of Carrying Values and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Held-to-maturity investment securities | $ 9,229 | $ 9,382
Financial liabilities: |  |
Time deposits | 10,133 | 11,482
Level 2 | Carrying value |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Held-to-maturity investment securities | 9,272 | 9,669
Financial liabilities: |  |
Time deposits | 10,133 | 11,482
Long-term debt | 970 | 950
Level 2 | Fair value |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Held-to-maturity investment securities | 9,229 | 9,382
Financial liabilities: |  |
Time deposits | 10,114 | 11,468
Long-term debt | 980 | 950
Level 3 | Carrying value |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans and leases (including loans held for sale), net of allowance | 60,315 | 58,788
Level 3 | Fair value |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans and leases (including loans held for sale), net of allowance | $ 58,623 | $ 57,130

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