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Discontinued Operations (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Discontinued Operations (Textuals) [Abstract]      
Net after-tax benefit relating to settlement of indemnification of divested business and changes in estimate for environmental and legal matters of divested businesses     $ 0.7
Income (loss) from discontinued operations, net of tax $ 0 $ 0 $ 0.7