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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Shipping and Handling Costs (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Accounting Policies [Abstract]      
Shipping, Handling and Transportation Costs $ 260.3 $ 246.1 $ 198.2