Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified																										12 Months Ended
	Jun. 30, 2011 Fair Value, Measurements, Recurring Quoted Prices in Active Markets for Identical Assets (Level 1)	Jun. 30, 2010 Fair Value, Measurements, Recurring Quoted Prices in Active Markets for Identical Assets (Level 1)	Jun. 30, 2011 Fair Value, Measurements, Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Commodity contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Commodity contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Foreign exchange contracts.	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2)	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2)	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Commodity contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Commodity contracts	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Foreign exchange contracts.	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Foreign exchange contracts.	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Interest rate contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Other Observable Inputs (Level 2) Interest rate contracts	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Unobservable Inputs (Level 3)	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Unobservable Inputs (Level 3)	Jun. 30, 2011 Fair Value, Measurements, Recurring Significant Unobservable Inputs (Level 3) Commodity contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Significant Unobservable Inputs (Level 3) Commodity contracts	Jun. 30, 2011 Fair Value, Measurements, Recurring Total Fair Value	Jun. 30, 2010 Fair Value, Measurements, Recurring Total Fair Value	Jun. 30, 2011 Fair Value, Measurements, Recurring Total Fair Value Commodity contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Total Fair Value Commodity contracts	Jun. 30, 2011 Fair Value, Measurements, Recurring Total Fair Value Foreign exchange contracts.	Jun. 30, 2010 Fair Value, Measurements, Recurring Total Fair Value Foreign exchange contracts.	Jun. 30, 2011 Fair Value, Measurements, Recurring Total Fair Value Interest rate contracts	Jun. 30, 2010 Fair Value, Measurements, Recurring Total Fair Value Interest rate contracts	Jun. 30, 2011 Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions
Minimum threshold of relative value of unobservable inputs to the total fair value for Level 3 (as a percent)																										10.00%
Assets:
Inventories carried at market						$ 5,153	$ 3,774							$ 762	$ 458			$ 5,915	$ 4,232
Unrealized derivative gains:			1,198	777	162			1,457	1,883	237	38	3				112	69			2,767	2,729	237	200	3
Marketable securities	1,628	1,067				328	543											1,956	1,610
Total Assets	2,826	2,006				7,178	6,238							874	527			10,878	8,771
Liabilities:
Unrealized derivative losses:			1,317	937	184			1,193	2,161	178	82		26			44	56			2,554	3,154	178	266		26
Inventory-related payables						278	207							45	31			323	238
Total Liabilities	$ 1,317	$ 1,121				$ 1,649	$ 2,476							$ 89	$ 87			$ 3,055	$ 3,684