EXCESS MORTGAGE SERVICING RIGHTS - Summary of Financial Results of Excess MSR Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSRs	$ 135,356	$ 152,383
Other assets	116,865	105,728
Other liabilities	(3,567,533)	(3,291,823)
Total equity	7,010,068	6,669,380	$ 5,429,684	$ 7,236,260
Rithm Capital’s investment	8,889,403	6,858,803	4,585,841
Interest income	15,157	7,574	22,507
Other income (loss)	(12,073)	(3,906)	(29,461)
Expenses	(32)	(32)	(24)
Net income (loss)	983,285	805,582	(1,357,684)
Excess MSR Joint Ventures
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Rithm Capital’s investment	$ 72,437	$ 85,749
Rithm Capital’s percentage ownership	50.00%	50.00%
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Other assets	$ 10,204	$ 19,802
Other liabilities	(687)	(687)
Total equity	144,873	171,498
Net income (loss)	$ 3,052	$ 3,636	$ (6,978)