EXCESS MORTGAGE SERVICING RIGHTS - Summary of Financial Results of Excess MSR Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSR	$ 149,598		$ 149,598			$ 152,383
Other assets	161,488		161,488			105,728
Total equity	7,062,998	$ 6,166,151	7,062,998	$ 6,166,151	$ 7,184,712	6,669,380	$ 5,621,813	$ 5,429,684
Rithm Capital’s investment	8,626,409		8,626,409			6,858,803
Interest income	410	(2,919)	6,077	6,239
Other income (loss)	(91)	1,791	(2,343)	(1,029)
Expenses	(8)	(8)	(16)	(16)
Net income	33,331	145,726	723,262	447,062
Excess MSR Joint Ventures
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Rithm Capital’s investment	$ 80,834		$ 80,834			$ 85,749
Rithm Capital’s percentage ownership	50.00%		50.00%			50.00%
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Other assets	$ 12,756		$ 12,756			$ 19,802
Other liabilities	(687)		(687)			(687)
Total equity	161,667		161,667			$ 171,498
Net income	$ 311	$ (1,136)	$ 3,718	$ 5,194