INVESTMENTS IN 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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Equity	$ 5,388,972	$ 6,800,830	$ 5,388,972	$ 6,800,830	$ 5,330,464	$ 7,236,260	$ 6,912,209	$ 6,088,295
Mortgage servicing rights, at fair value	5,021,086		5,021,086			5,686,233
Net income (loss)	44,129	(25,020)	(1,563,126)	130,892
Excess MSRs Investees
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Excess MSR assets	200,650		200,650			226,843
Other assets	24,983		24,983			25,035
Mortgage servicing rights, at fair value	$ 112,473		$ 112,473			$ 125,596
New Residential’s ownership	50.00%		50.00%			50.00%
Interest income	$ 536	190	$ 7,850	4,261
Other income (loss)	(4,632)	(6,727)	(12,852)	(5,557)
Expenses	(8)	(15)	(16)	(32)
Excess MSRs Investees | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Other liabilities	(687)		(687)			$ (687)
Equity	224,946		224,946			$ 251,191
Net income (loss)	(4,104)	$ (6,552)	(5,018)	$ (1,328)
MSRs
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Mortgage servicing rights, at fair value	$ 3,551,159		$ 3,551,159