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LOANS - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Assets | $ 93,227,236 | $ 81,850,712 |
Loan loss (provision) reversal | (219) | (20,660) | $ (145,066)
Allowance for loan loss | 0 | 0 |
Residential mortgage loans |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Assets | 2,400,000 | 1,800,000 |
Loans held-for-sale | $ 1,200 | $ 1,300 |
Percent of adjustable-rate loans | 11.00% | 11.00% |

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