INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Schedule of Activity Related to the Carrying Value of Investments in MSRs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Activity related to carrying value of investments in mortgage servicing rights [Roll Forward]
Beginning Balance	$ 598,728
Ending Balance	1,886,771
MSRs
Activity related to carrying value of investments in mortgage servicing rights [Roll Forward]
Investments made	319,495
Amortization of servicing rights	(55,127)	$ (26,296)
Change in valuation inputs and assumptions	129,793	$ (759)
Mortgage Servicing Rights Financing Receivable | MSRs
Activity related to carrying value of investments in mortgage servicing rights [Roll Forward]
Ending Balance	1,886,771
Mortgage Servicing Rights Financing Receivable | New Residential Mortgage LLC | MSRs
Activity related to carrying value of investments in mortgage servicing rights [Roll Forward]
Beginning Balance	598,728
Investments made	0
New Ocwen Agreements	1,017,993
Proceeds from sales	(1,026)
Amortization of servicing rights	(48,703)
Change in valuation inputs and assumptions	319,779
Ending Balance	$ 1,886,771