TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details) - USD ($) $ in Millions				3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2015	Mar. 06, 2014	Jun. 27, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2015		Dec. 31, 2014	May. 15, 2013
Related Party Transaction [Line Items]
Management agreement, renewal term							1 year
Majority vote, percent							66.70%
Management fee rate										1.50%
Decrease in incentive compensation						$ 5.5
Payments or accruals for MSR Fund Payments							$ 4.4
Nationstar [Member] | Customer Concentration Risk [Member] | UPB - Excess MSRs [Member]
Related Party Transaction [Line Items]
Percentage of UPB of loans underlying investments							64.40%
Nationstar [Member] | Customer Concentration Risk [Member] | UPB - Servicer Advances [Member]
Related Party Transaction [Line Items]
Percentage of UPB of loans underlying investments							34.90%
Agency RMBS [Member]
Related Party Transaction [Line Items]
Face amount of securities purchased	$ 700.0		$ 22.7				$ 5,140.1		$ 1,341.0
Purchase of real estate securities			$ 1.2	$ 1.2
Non-Agency RMBS [Member]
Related Party Transaction [Line Items]
Face amount of securities purchased		$ 625.0					$ 2,397.9	[1]	$ 3,187.5
FIG LLC [Member]
Related Party Transaction [Line Items]
Management fee rate										1.50%
Incentive compensation percentage										25.00%
Interest rate for incentive compensation										10.00%
Increase in incentive compensation to affiliate					$ 3.3
Nationstar [Member]
Related Party Transaction [Line Items]
Unpaid principal balance fee							0.75%
Nationstar [Member] | Residential Mortgage Loans [Member]
Related Party Transaction [Line Items]
Unpaid Principal Balance	588.4						$ 588.4
Nationstar [Member] | Real Estate Owned [Member]
Related Party Transaction [Line Items]
Unpaid balance of real estate owned	24.8						24.8
Nationstar [Member] | Agency RMBS [Member]
Related Party Transaction [Line Items]
Face amount	35.3						35.3
Nationstar [Member] | Non-Agency RMBS [Member]
Related Party Transaction [Line Items]
Face amount	2,400.0						2,400.0
Unpaid Principal Balance	$ 9,500.0						$ 9,500.0

[1] Purchases include $431.0 million face of servicer advance bonds for a purchase price of $431.0 million.