Derivatives And Hedging Activities (Fair Value Of Outstanding Derivative Contracts Recorded In Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Jun. 30, 2011
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	$ 3.0	$ 20.0
Derivatives designated as hedging instruments, Liability	46.5	14.1
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	2.3	2.8
Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	0.7
Derivatives designated as hedging instruments, Liability	1.1	0.9
Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset		17.2
Derivatives designated as hedging instruments, Liability	45.4	13.2
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	1.5	6.2
Other Current Assets [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	0.8	0.8
Other Current Assets [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	0.7
Other Current Assets [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset		5.4
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	1.5	13.8
Other Assets [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset	1.5	2.0
Other Assets [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset		11.8
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	24.3	7.7
Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	0.8	0.9
Accrued Liabilities [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	23.5	6.8
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	22.2	6.4
Other Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	0.3
Other Liabilities [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability	$ 21.9	$ 6.4