EXPENSES, CHANGES IN FAIR VALUE OF INVESTMENTS AND OTHER - Schedule of Gain (Loss) on Settlement of Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Income and Expenses [Abstract]
Gain (loss) on sale of real estate securities	$ (1,735,009)	$ (89,811)	$ (753,713)
Sale of acquired residential mortgage loans	55,298	120,680	(5,662)
Settlement of derivatives	374,464	(172,581)	(74,812)
Liquidated residential mortgage loans	(42,639)	(5,946)	4,644
Sale of REO	(4,148)	(6,622)	(21,925)
Extinguishment of debt	0	(1,485)	(66,233)
Other	(7,645)	(78,796)	(12,430)
Gain (loss) on settlement of investments, net	$ (1,359,679)	$ (234,561)	$ (930,131)