Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Foreign Currency Transactions and Translation) (Details)

v3.5.0.2
Summary of Significant Accounting Policies (Foreign Currency Transactions and Translation) (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Foreign currency transaction gain (loss), before tax $ (0.1) $ 0.3 $ 0.1