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COMMITMENTS AND CONTINGENCIES - Schedule of Fair Value, Off-balance Sheet Risks (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing assets (excluding leases) |  |
Other Commitments [Line Items] |  |
Credit related commitments | $ 51,935 | $ 53,250
Standby letters of credit |  |
Other Commitments [Line Items] |  |
Credit related commitments | 2,478 | 2,188
Other letters of credit |  |
Other Commitments [Line Items] |  |
Credit related commitments | 158 | 103
Deferred Purchase Agreements |  |
Other Commitments [Line Items] |  |
Credit related commitments | 1,870 | 1,802
Purchase and Funding Commitments |  |
Other Commitments [Line Items] |  |
Credit related commitments | $ 232 | $ 178

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