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Interest Expense - Schedule of Components of Interest Expense (Footnote) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
NRZ [Member]    
Schedule of Interest Expense [Line Items]    
Financing costs associated with downgrade of servicer rating $ 8.2 $ 8.5