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Other Assets - Schedule of Other Assets (Footnote) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2015
USD ($)
Other Assets [Abstract]  
Period required to remit collections on pledged advances 2 days
Escrow deposit for payment of representation, warranty and indemnification claims $ 52.9
Prepaid expenses $ 41.3
Period for deferred tax effects being amortized to income tax expense 7 years