RESIDENTIAL MORTGAGE LOANS - Carrying Value of Mortgage Loans (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning	[1]	$ 4,374,241
Valuation reversal on loans		4,026	$ 3,509
Balance, ending	[1]	5,947,402
Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning		4,736,131
Originations		43,215,508
Sales		(44,836,309)
Purchases/additional fundings		3,732,587
Proceeds from repayments		(144,266)
Transfer of loans from (to) other assets		(467,019)
Transfer of loans to REO		(3,260)
Valuation reversal on loans		1,104
Changes in instrument-specific credit risk		(12,635)
Other factors		60,150
Balance, ending		6,281,991
Loans HFI, at Fair Value | Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning		361,890
Originations		0
Sales		0
Purchases/additional fundings		0
Proceeds from repayments		(31,996)
Transfer of loans from (to) other assets		0
Transfer of loans to REO		(1,945)
Valuation reversal on loans		0
Changes in instrument-specific credit risk		(1,260)
Other factors		7,900
Balance, ending		334,589
Residential Mortgage Loans, Held-for-Sale | Loans HFS, at Lower of Cost or Fair Value | Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning		66,670
Originations		0
Sales		0
Purchases/additional fundings		0
Proceeds from repayments		(7,478)
Transfer of loans from (to) other assets		(799)
Transfer of loans to REO		(706)
Valuation reversal on loans		1,104
Changes in instrument-specific credit risk		0
Other factors		0
Balance, ending		58,791
Residential Mortgage Loans, Held-for-Sale | Loans HFS, at Fair Value | Residential Portfolio Segment
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning		4,307,571
Originations		43,215,508
Sales		(44,836,309)
Purchases/additional fundings		3,732,587
Proceeds from repayments		(104,792)
Transfer of loans from (to) other assets		(466,220)
Transfer of loans to REO		(609)
Valuation reversal on loans		0
Changes in instrument-specific credit risk		(11,375)
Other factors		52,250
Balance, ending		$ 5,888,611

[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.