EXCESS MORTGAGE SERVICING RIGHTS - Summary of Financial Results of Excess MSR Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSRs	$ 114,552				$ 135,356								$ 114,552	$ 135,356
Other assets	182,881				132,809								182,881	132,809
Other liabilities	(5,811,937)				(3,567,184)								(5,811,937)	(3,567,184)
Equity	7,101,038	$ 7,267,963	$ 7,194,684	$ 6,954,543	7,010,068	$ 7,061,626	$ 7,062,998	$ 7,184,712	$ 7,194,684	$ 7,062,998	$ 7,267,963	$ 7,061,626	7,101,038	7,010,068	$ 6,669,380	$ 5,429,684
Rithm Capital’s investment	8,405,938				8,889,403								8,405,938	8,889,403	6,858,803
Interest income													13,358	15,157	7,574
Other income (loss)													(8,296)	(12,073)	(3,906)
Expenses													(32)	(32)	(32)
Net income (loss)	(67,151)	$ 221,191	$ 386,685	$ 89,949	105,833	$ 154,190	$ 33,331	$ 689,931	$ 476,634	$ 723,262	$ 697,825	$ 877,452	630,674	983,285	805,582
Excess MSR joint ventures
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Rithm Capital’s investment	$ 62,765				$ 72,437								$ 62,765	$ 72,437
Ownership percentage	50.00%				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	$ 11,664				$ 10,204								$ 11,664	$ 10,204
Other liabilities	(687)				(687)								(687)	(687)
Equity	$ 125,529				$ 144,873								125,529	144,873
Net income (loss)													$ 5,030	$ 3,052	$ 3,636