Fair Value Measurements (Fair Value Measurements At Reporting Date) (Details) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2012 Significant Unobservable Inputs (Level 3) [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] Commodity Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] Commodity Contracts [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] Commodity Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] Commodity Contracts [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] Foreign Exchange Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] Foreign Exchange Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] Interest Rate Contracts [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member] Commodity Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member] Commodity Contracts [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member] Commodity Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member] Commodity Contracts [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member] Foreign Exchange Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member] Foreign Exchange Contracts [Member]	Jun. 30, 2011 Fair Value, Measurements, Recurring [Member] Total Fair Value [Member] Interest Rate Contracts [Member]
Threshold of relative value of unobservable inputs to the total fair value for Level 3			10.00%
Assets:
Inventories carried at market								$ 5,604	$ 5,153						$ 1,725	$ 762			$ 7,329	$ 5,915
Unrealized derivative gains	2,688	3,007				1,270	1,198			1,006	1,457	180	237	3			232	112			2,508	2,767	180	237	3
Marketable securities				1,936	1,628			50	328										1,986	1,956
Deferred receivables consideration	710							710											710
Total Assets				3,206	2,826			7,550	7,178						1,957	874			12,713	10,878
Liabilities:
Unrealized derivative losses	2,728	2,732				1,511	1,317			845	1,193	188	178				184	44			2,540	2,554	188	178
Inventory-related payables								311	278						137	45			448	323
Total Liabilities				$ 1,511	$ 1,317			$ 1,344	$ 1,649						$ 321	$ 89			$ 3,176	$ 3,055