MORTGAGE SERVICING RIGHTS AND MSR FINANCING RECEIVABLES - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Residential mortgage loans subject to repurchase		$ 2,700,353	$ 2,409,992	$ 2,700,353	$ 2,409,992	$ 2,745,756
Residential mortgage loans, held-for-sale (includes $5,888,611 and $4,307,571 at fair value, respectively)	[1]	5,947,402		5,947,402		4,374,241
Reserve for non-recovery advances		$ 117,565		$ 117,565		$ 121,396
Reserve for non-recovery advances, percent		4.20%		4.20%		3.70%
Onity Group Inc. | Rithm Capital
Schedule of Equity Method Investments [Line Items]
UPB		$ 86,800,000		$ 86,800,000
Unpaid principal balance of underlying loans, not yet transferred		9,800,000		$ 9,800,000
PHH Mortgage Corporation
Schedule of Equity Method Investments [Line Items]
Subservicer percent of UPB				5.60%
Valon
Schedule of Equity Method Investments [Line Items]
Subservicer percent of UPB				3.70%
Newrez And Caliber
Schedule of Equity Method Investments [Line Items]
Subservicer percent of UPB				90.70%
Ocwen
Schedule of Equity Method Investments [Line Items]
UPB		110,000,000		$ 110,000,000
Ginnie Mae Loans
Schedule of Equity Method Investments [Line Items]
Residential mortgage loans, held-for-sale (includes $5,888,611 and $4,307,571 at fair value, respectively)		500,000		500,000		$ 500,000
Mortgage Loans Subserviced
Schedule of Equity Method Investments [Line Items]
UPB		269,200,000		269,200,000		$ 242,900,000
Subservicing revenue		$ 77,000	$ 59,300	$ 231,500	$ 148,400

[1] The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities (“VIEs”) and certain other consolidated VIEs, including funds and collateralized financing entities (“CFEs”) that are presented separately within assets and liabilities of consolidated entities. VIE assets can only be used to settle obligations and liabilities of the VIEs. VIE creditors do not have recourse to Rithm Capital Corp. As of September 30, 2025 and December 31, 2024, total assets of such consolidated VIEs were $7.1 billion and $6.3 billion, respectively, and total liabilities of such consolidated VIEs were $5.6 billion and $5.2 billion, respectively. See Note 20 for further details.