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FINANCIAL DERIVATIVES - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Derivative [Line Items] |  |  |  |  |
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Accrued interest receivable (includes $21,711 and $16,764, respectively, related to consolidated trusts) |  | Accrued interest receivable (includes $21,711 and $16,764, respectively, related to consolidated trusts) |  | Accrued interest receivable (includes $21,711 and $16,764, respectively, related to consolidated trusts)
Gain expected to be reclassified from AOCI to earnings over next 12 months | $ 14,300,000 |  | $ 14,300,000 |  |
Gain (loss) from interest rate swaps designated as cash flow hedges reclassified to earnings | 0 | $ 0 | 0 | $ 0 |
Financial derivatives, net payable position | 0 |  | 0 |  | $ 0
Notional amount | 25,569,003,000 |  | 25,569,003,000 |  | 25,779,468,000
Exchange Cleared |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount | 20,300,000,000 |  | 20,300,000,000 |  | 20,500,000,000
Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount | 25,600,000,000 |  | 25,600,000,000 |  | 25,800,000,000
Cleared Swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Accrued interest on cleared swaps | 17,800,000 |  | 17,800,000 |  | 16,400,000
Uncleared Swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Accrued interest payable | $ 5,800,000 |  | $ 5,800,000 |  | $ 6,500,000

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