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Derivative Financial Instruments And Hedging (Balance Sheet Location Of Derivative Instruments In Fair Value) (Details) (USD $)
In Millions
Jun. 30, 2011
Sep. 30, 2010
Assets derivatives, fair value total $ 2.9 $ 16.7
Liability derivatives, fair value total 16.6 2.6
Commodity Contracts [Member] | Other Current Liabilities [Member]
   
Liability derivatives, fair value 6.2 2.6
Interest Rate Contracts [Member] | Other Current Liabilities [Member]
   
Liability derivatives, fair value 10.4  
Prepaid Expenses And Other Current Assets [Member]
   
Foreign exchange contracts 0.5 0.9
Commodity contracts $ 2.4 $ 15.8