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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Certain Information Regarding Weighted Average Inputs used in Valuing Excess MSRs Owned Directly and through Equity Method Investees (Details)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
MSRs [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 10.20% 12.10%
Delinquency [2],[3] 4.20% 6.20%
Recapture Rate [2],[4] 13.60% 23.10%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0017 0.0018
Directly Held [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 10.00% 11.40%
Delinquency [2],[3] 3.80% 5.50%
Recapture Rate [2],[4] 9.50% 20.70%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0016 0.0018
Held through Equity Method Investees [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 10.80% 12.50%
Delinquency [2],[3] 5.60% 6.30%
Recapture Rate [2],[4] 29.00% 24.60%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0020 0.0017
Agency [Member] | Directly Held [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 10.00% 10.60%
Delinquency [2],[3] 3.80% 5.50%
Recapture Rate [2],[4] 27.40% 30.10%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0021 0.0022
Agency [Member] | Directly Held [Member] | Original Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 10.70%  
Delinquency [2],[3] 3.50%  
Recapture Rate [2],[4] 29.50%  
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0021  
Agency [Member] | Directly Held [Member] | Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 7.50%  
Delinquency [2],[3] 4.90%  
Recapture Rate [2],[4] 20.00%  
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0020  
Agency [Member] | Directly Held [Member] | Original and Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2]   11.00%
Delinquency [2],[3]   5.60%
Recapture Rate [2],[4]   31.60%
Excess Mortgage Servicing Amount (bps) [2],[5]   0.0022
Agency [Member] | Directly Held [Member] | Recapture Agreement [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 7.60% 8.00%
Delinquency [2],[3] 4.90% 5.00%
Recapture Rate [2],[4] 20.00% 19.90%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0022 0.0020
Agency [Member] | Held through Equity Method Investees [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2]   12.30%
Delinquency [2],[3]   6.30%
Recapture Rate [2],[4]   30.60%
Excess Mortgage Servicing Amount (bps) [2],[5]   0.0020
Agency [Member] | Held through Equity Method Investees [Member] | Original Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 12.60%  
Delinquency [2],[3] 5.90%  
Recapture Rate [2],[4] 34.30%  
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0019  
Agency [Member] | Held through Equity Method Investees [Member] | Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 7.70%  
Delinquency [2],[3] 5.00%  
Recapture Rate [2],[4] 20.00%  
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0023  
Agency [Member] | Held through Equity Method Investees [Member] | Original and Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2]   13.30%
Delinquency [2],[3]   6.60%
Recapture Rate [2],[4]   33.10%
Excess Mortgage Servicing Amount (bps) [2],[5]   0.0019
Agency [Member] | Held through Equity Method Investees [Member] | Recapture Agreement [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2] 7.70% 8.00%
Delinquency [2],[3] 4.90% 5.00%
Recapture Rate [2],[4] 20.00% 20.00%
Excess Mortgage Servicing Amount (bps) [2],[5] 0.0023 0.0023
Non-Agency [Member] | Directly Held [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6] 10.00% 12.30%
Recapture Rate [2],[4],[6] 2.60% 10.50%
Excess Mortgage Servicing Amount (bps) [2],[5],[6] 0.0014 0.0015
Non-Agency [Member] | Directly Held [Member] | Original Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6] 12.50%  
Recapture Rate [2],[4],[6] 10.20%  
Excess Mortgage Servicing Amount (bps) [2],[5],[6] 0.0014  
Non-Agency [Member] | Directly Held [Member] | Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6] 7.50%  
Recapture Rate [2],[4],[6] 20.00%  
Excess Mortgage Servicing Amount (bps) [2],[5],[6] 0.0020  
Non-Agency [Member] | Directly Held [Member] | Original and Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6]   12.50%
Recapture Rate [2],[4],[6]   10.00%
Excess Mortgage Servicing Amount (bps) [2],[5],[6]   0.0015
Non-Agency [Member] | Directly Held [Member] | Recapture Agreement [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6] 7.50% 8.00%
Recapture Rate [2],[4],[6] 20.00% 20.00%
Excess Mortgage Servicing Amount (bps) [2],[5],[6] 0.0020 0.0020
Non-Agency [Member] | Directly Held [Member] | Ocwen Serviced Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6] 9.30%  
Recapture Rate [2],[4],[6] 0.00%  
Excess Mortgage Servicing Amount (bps) [2],[5],[6] 0.0014  
Non-Agency [Member] | Held through Equity Method Investees [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6]   13.00%
Recapture Rate [2],[4],[6]   10.80%
Excess Mortgage Servicing Amount (bps) [2],[5],[6]   0.0012
Non-Agency [Member] | Held through Equity Method Investees [Member] | Original and Recaptured Pools [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6]   13.40%
Recapture Rate [2],[4],[6]   10.00%
Excess Mortgage Servicing Amount (bps) [2],[5],[6]   0.0012
Non-Agency [Member] | Held through Equity Method Investees [Member] | Recapture Agreement [Member]    
Held Directly (Note 4):    
Prepayment Speed [1],[2],[6]   8.00%
Recapture Rate [2],[4],[6]   20.00%
Excess Mortgage Servicing Amount (bps) [2],[5],[6]   0.0020
[1] Projected annualized weighted average lifetime voluntary and involuntary prepayment rate using a prepayment vector.
[2] Weighted by fair value of the portfolio.
[3] Projected percentage of mortgage loans in the pool that will miss their mortgage payments.
[4] Percentage of voluntarily prepaid loans that are expected to be refinanced by Nationstar or Ocwen, as applicable.
[5] Weighted average total mortgage servicing amount in excess of the basic fee.
[6] For certain pools, the Excess MSR will be paid on the total UPB of the mortgage portfolio (including both performing and delinquent loans until REO). For these pools, no delinquency assumption is used.