REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate and Other Securities for Held to Maturity (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 27,610,692,000	$ 25,370,934,000
Weighted Average Life (Years)	1 year 2 months 12 days
Residential Mortgage Backed Securities, Held To Maturity, Treasury
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 25,000,000
Amortized Cost / Carrying Value	24,553,000	$ 0
Fair Value	24,566,000
Unrecognized Gains/(Losses)	$ 13,000
Number of Securities | security	1
Weighted Average Yield	5.40%
Weighted Average Life (Years)	3 months 18 days