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LOANS - Interest Income Recognized for Non-Accrual Consumer Loans (Details) - Consumer loans - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | $ 7 | $ 6 | $ 19 | $ 20
Loans sold and/or reclassified to held-for-sale | 12 | 2 | 54 | 61
Credit card portfolio loans |  | 700 |  |
In North America offices |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 4 | 4 | 11 | 12
In offices outside North America |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 3 | 2 | 8 | 8
Residential mortgages | In North America offices |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 3 | 2 | 7 | 7
Residential mortgages | In offices outside North America |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 3 | 2 | 7 | 7
Home equity loans | In North America offices |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 1 | 1 | 3 | 4
Personal, small business and other | In North America offices |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | 0 | 1 | 1 | 1
Personal, small business and other | In offices outside North America |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Interest income recognized | $ 0 | $ 0 | $ 1 | $ 1

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