EXCESS MORTGAGE SERVICING RIGHTS - Summary of Financial Results of Excess MSR Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Total equity	$ 7,184,712	$ 5,621,813	$ 6,669,380	$ 5,429,684
New Residential’s investment	7,964,465		6,858,803
Net income (loss)	689,931	301,336
Excess MSR Joint Ventures
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSR	148,703		152,383
Other assets	19,581		19,802
New Residential’s investment	$ 83,799		$ 85,749
New Residential’s percentage ownership	50.00%		50.00%
Interest income	$ 5,667	9,158
Other income (loss)	(2,252)	(2,820)
Expenses	(8)	(8)
Excess MSR Joint Ventures | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Other liabilities	(687)		$ (687)
Total equity	167,597		$ 171,498
Net income (loss)	$ 3,407	$ 6,330