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REGULATORY CAPITAL - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 USD ($) | Dec. 31, 2024
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer | 0.0571 | 0.0704
Basel III conservation buffers, total risk-based capital | 0.0250 |
FCB |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer | 0.0562 | 0.0666
Dividend restrictions, additional maximum amount of distribution | $ 6,570 |
Payments of dividends | $ 1,680 |

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