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Receivables - Schedule of Receivables (Footnote) (Details) - USD ($)
$ in Millions
Mar. 19, 2015
Dec. 31, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Allowance for losses related to FHA or VA insured loans   $ 20.6 $ 10.0
Other receivables, probable losses     $ 28.8
Homeward Acquisition [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Settlement of indemnification claims $ 38.1