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Sales of Advances and MSRs - Narrative (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Agreement
Servicing Assets at Fair Value [Line Items]    
Number of non-agency servicing agreements terminated due to downgrades in mortgage servicer rating | Agreement   4
NRZ [Member]    
Servicing Assets at Fair Value [Line Items]    
Outstanding servicing advances $ 4,600.0  
Period from sale of tranche of rights to mortgage servicing rights that apportionment of fees is subject to re-negotiation 8 years  
Liquidating damages paid   $ 2.2
Increased costs of financing to be compensated during any calendar month $ 3.0  
Increased costs of financing to be compensated during contractual term 36.0  
Expenses in connection with downgrade in servicers rating $ 10.5 $ 0.3