FINANCIAL DERIVATIVES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Derivative [Line Items]
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable (includes $16,524 and $28,563, respectively, related to consolidated trusts)		Accrued interest receivable (includes $16,524 and $28,563, respectively, related to consolidated trusts)
Gain expected to be reclassified from AOCI to earnings over next 12 months	$ 9,100,000
Gain (loss) from interest rate swaps designated as cash flow hedges reclassified to earnings	0	$ 0
Financial derivatives, net payable position	0		$ 0
Notional amount	24,009,136,000		24,896,331,000
Exchange Cleared
Derivative [Line Items]
Notional amount	18,200,000,000		19,100,000,000
Interest Rate Swap
Derivative [Line Items]
Notional amount	24,000,000,000.0		24,900,000,000
Cleared Swaps
Derivative [Line Items]
Accrued interest on cleared swaps	27,600,000		15,800,000
Uncleared Swaps
Derivative [Line Items]
Accrued interest payable	$ 3,000,000		$ 4,900,000