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REGULATORY CAPITAL - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer | 0.0704 | 0.0775
Basel III conservation buffers, total risk-based capital | 0.0250 |
FCB |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer | 0.0666 | 0.0756
Dividend restrictions, additional maximum amount of distribution | $ 7,630 |
Payments of dividends | $ 2,220 |

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