VARIABLE INTEREST ENTITIES - Variable Interest Entities, Characteristics (Details) - SAFT 2013-1 Securitization Entity - VIE, consolidated - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Variable Interest Entity [Line Items]
Residential mortgage loan UPB and other collateral	$ 12,137,481	$ 11,403,079
Weighted average delinquency	4.90%	4.70%
Net credit losses	$ 170,439	$ 118,958
Face amount of debt held by third parties	11,228,461	10,475,990
Carrying value of bonds retained by Rithm Capital	920,904	965,846
Cash flows received by Rithm Capital on these bonds	$ 173,765	$ 260,306
Number of days delinquent (in days)	60 days