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Regulatory Requirements - Narrative (Details)
$ in Millions
9 Months Ended 33 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Brokers and Dealers [Abstract]    
Third party monitoring costs related to regulatory matters and resolutions   $ 162.6
Capital requirement, unpaid principal balance $ 475.3 $ 475.3
Number of days from fiscal year end that servicer is obliged to provide audited financial statements 90 days