Quarterly report pursuant to Section 13 or 15(d)

TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)

v3.10.0.1
TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2018
USD ($)
Related Party Transaction [Line Items]  
Management agreement, renewal term (in years) 1 year
Termination fee, number of months' pay (in months) 12 months
Proportion of directors' votes needed to terminate 0.6667
Accruals for MSR Fund Payments $ 0.1
Amount of securities transferred to MSR Fund Payments $ 0.2
Nationstar | Credit Concentration Risk | Investment Interest Income - Excess MSRs  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 99.20%
Nationstar | Credit Concentration Risk | Investment Interest Income - MSRs  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 26.00%
Nationstar | Credit Concentration Risk | Investment Interest Income - Servicer Advances  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 97.00%
Manager  
Related Party Transaction [Line Items]  
Management fee rate (percent) 1.50%
Incentive compensation percentage 25.00%
Interest rate for incentive compensation 10.00%
Nationstar | Residential Mortgage  
Related Party Transaction [Line Items]  
Unpaid Principal Balance $ 961.1
Nationstar | Real Estate Owned  
Related Party Transaction [Line Items]  
Unpaid balance of real estate owned 9.6
Nationstar | Non-Agency  
Related Party Transaction [Line Items]  
Face amount of investment 3,400.0
Unpaid Principal Balance $ 20,000.0
Redemption premium percentage 0.75%
Nationstar | Agency RMBS  
Related Party Transaction [Line Items]  
Face amount of investment $ 38.3