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Basis of Presentation and Accounting Policies (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Sep. 30, 2013
Accounting Policies [Abstract]          
Allowances for doubtful accounts $ 22.9   $ 22.9   $ 22.5
Allowance for certain customer returns, rebates and incentives $ 8.2   $ 8.2   $ 8.9
Antidilutive share-based compensation awards 0.9 1.1 0.9 1.7