EXCESS MORTGAGE SERVICING RIGHTS ASSETS - Summary of Financial Results of Excess MSR Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Total equity	$ 6,166,151	$ 5,388,972	$ 6,166,151	$ 5,388,972	$ 5,621,813	$ 5,429,684	$ 5,330,464	$ 7,236,260
New Residential’s investment	4,790,429		4,790,429			4,585,841
Net income (loss)	145,726	44,129	447,062	(1,563,126)
Excess MSRs Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSR assets	166,868		166,868			179,762
Other assets	22,214		22,214			20,759
New Residential’s investment	$ 94,198		$ 94,198			$ 99,917
New Residential’s percentage ownership	50.00%		50.00%			50.00%
Interest income	$ (2,919)	536	$ 6,239	7,850
Other income (loss)	1,791	(4,632)	(1,029)	(12,852)
Expenses	(8)	(8)	(16)	(16)
Excess MSRs Investees | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Other liabilities	(687)		(687)			$ (687)
Total equity	188,395		188,395			$ 199,834
Net income (loss)	$ (1,136)	$ (4,104)	$ 5,194	$ (5,018)