Derivatives and Hedging Activities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	$ 20.4	$ 0.9
Derivatives designated as hedging instruments, Liability	10.9	73.1
Foreign Currency Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Asset		0.9
Derivatives designated as hedging instruments, Liability	0.6	0.4
Commodity Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	20.4
Derivatives designated as hedging instruments, Liability	10.3	72.7
Other current assets
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	11.3	0.9
Other current assets | Foreign Currency Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Asset		0.9
Other current assets | Commodity Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	11.3
Other assets
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	9.1
Other assets | Commodity Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Asset	9.1
Accrued liabilities
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	4.7	29.1
Accrued liabilities | Foreign Currency Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	0.4	0.4
Accrued liabilities | Commodity Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	4.3	28.7
Other liabilities
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	6.2	44.0
Other liabilities | Foreign Currency Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	0.2
Other liabilities | Commodity Contracts
Fair value of derivatives
Derivatives designated as hedging instruments, Liability	6.0	44.0
Fair Value Hedging | Interest Rate Swaps
Fair value of derivatives
Outstanding derivative contracts	0
Net gains recorded as a reduction to interest expense	0	1.4	1.4
Cash flow hedges
Fair value of derivatives
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	57.7	(38.6)	(79.1)
Cash flow hedges | Interest Rate Swaps
Fair value of derivatives
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)		2.7
Cash flow hedges | Foreign Currency Contracts
Fair value of derivatives
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(1.6)	1.9	(0.1)
Cash flow hedges | Commodity Contracts
Fair value of derivatives
Amounts of raw materials to be purchased from forward contracts	30,100,000
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ 59.3	$ (43.2)	$ (79.0)