LOANS - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024		Mar. 31, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	$ 105,115,346	$ 103,556,384	[1]	$ 91,483,546
Residential Mortgage Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	3,900,000	3,500,000
Loans held-for-sale	$ 6,300	$ 10,000
Percent of adjustable-rate loans	15.00%	16.00%

[1] (1)Derived from the audited consolidated financial statements at December 31, 2024.