Derivatives and Hedging Activities (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Gains (losses) related to cash flow hedges
Net derivative losses included in OCI expected to be reclassified into earnings	$ 23.8
Cash flow hedges
Gains (losses) related to cash flow hedges
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(79.1)	13.8	24.0
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	(22.2)	6.4	(1.9)
Cash flow hedges | Commodity contracts
Gains (losses) related to cash flow hedges
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(79.0)	15.2	23.3
Cash flow hedges | Commodity contracts | Cost of Sales
Gains (losses) related to cash flow hedges
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	(23.4)	7.6	(3.2)
Cash flow hedges | Foreign exchange contracts
Gains (losses) related to cash flow hedges
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(0.1)	(2.4)	0.7
Cash flow hedges | Foreign exchange contracts | Net Sales
Gains (losses) related to cash flow hedges
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	1.2	(1.2)	1.3
Cash flow hedges | Forward interest rate swaps
Gains (losses) related to cash flow hedges
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)		$ 1.0