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Other Assets - Schedule of Other Assets (Footnote) (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Other Assets [Abstract]    
Period required to remit collections on pledged advances 2 days  
Escrow deposit   $ 52.9
Other prepaid expense $ 37.1 $ 41.3