LOANS - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023		Sep. 30, 2023
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	$ 101,515,995	$ 93,227,236	[1]	$ 89,648,423
Residential Mortgage Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets	2,300,000	2,400,000
Loans held-for-sale	$ 800	$ 1,200
Percent of adjustable-rate loans	15.00%	11.00%

[1] (1)Derived from the audited consolidated financial statements at December 31, 2023.