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Condensed Consolidating Financial Information Condensed Consolidating Financial Information (Narrative) (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Intercompany net receivable (payable) $ 4.8 $ (1.6)
Monthly intercompany interest 0.7  
Intercompany Loan $ 413.3