LOANS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	$ 86,832,017		$ 81,850,712	[1]
Loan loss (provision) reversal	219	$ (608)
Residential Mortgage Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	1,600,000		1,800,000
Loans held-for-sale	$ 1,200		$ 1,300
Percent of adjustable-rate loans	11.00%		11.00%
Residential mortgage loan warehouse facility
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	$ 0		$ 0

[1] (1)Derived from the audited consolidated financial statements at December 31, 2022.