ORGANIZATION AND BASIS OF PRESENTATION - Summary of Preliminary Purchase Price Allocation (Footnote) (Details) - Residential Mortgage [Member] - USD ($) $ in Millions	Sep. 30, 2015	Sep. 25, 2015	Jun. 30, 2015	Jun. 25, 2015	Apr. 06, 2015
Financing Receivable, Recorded Investment [Line Items]
Unpaid Principal Balance		$ 216.3		$ 369.0
Non-Performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Unpaid Principal Balance	$ 1,200.0			$ 34.5
Non-Performing Loans [Member] | GNMA EBO [Member]
Financing Receivable, Recorded Investment [Line Items]
Unpaid Principal Balance	$ 424.3		$ 424.3		$ 424.3