Derivative Financial Instruments And Hedging (Fair Value And Balance Sheet Location Of Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
Derivatives, Fair Value [Line Items]
Assets derivatives, fair value total	$ 1.5	$ 0.3
Liability derivatives, fair value total	24.7	53.1
Commodity Contracts [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Commodity contracts	1.3	0.3
Commodity Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives, fair value	24.7	49.0
Foreign Exchange Contracts [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange contracts	0.2
Foreign Exchange Contracts [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives, fair value		$ 4.1