REAL ESTATE AND OTHER SECURITIES - Real Estate and Other Securities for Held to Maturity securities (Details)	6 Months Ended
	Jun. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 25,451,879,000
Weighted Average Life (Years)	1 year 2 months 12 days
Residential Mortgage Backed Securities, Held To Maturity, Treasury
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 1,000,000,000
Amortized Cost / Carrying Value	978,982,000	$ 0
Fair Value	979,200,000
Unrecognized Gains/(Losses)	$ 218,000
Number of Securities | security	1
Weighted Average Yield	5.40%
Weighted Average Life (Years)	4 months 24 days