DERIVATIVES - Disclosure by Type of Financial Instrument (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Gross amounts of recognized liabilities	$ (291,831)	$ (255,984)
Derivative Liability, Fair Value, Gross Asset	384,721	321,751
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	92,890	65,767
Fair Value Hedges | Foreign Exchange | Accrued interest and other liabilities
Derivatives, Fair Value [Line Items]
Gross amounts of recognized liabilities	162,496	145,556
Derivative Liability, Fair Value, Gross Asset	(62,169)	(55,959)
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	100,327	89,597
Fair Value Hedges | Interest Rate Swap | Accrued interest and other liabilities
Derivatives, Fair Value [Line Items]
Gross amounts of recognized liabilities	131,070	117,324
Derivative Liability, Fair Value, Gross Asset	(322,455)	(270,678)
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	(191,385)	(153,354)
Fair Value Hedges | Cash Flow Hedging | Accrued interest and other liabilities
Derivatives, Fair Value [Line Items]
Gross amounts of recognized liabilities	(1,735)	(6,896)
Derivative Liability, Fair Value, Gross Asset	(97)	4,886
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	$ (1,832)	$ (2,010)