Segment Information (Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012
Segment Information
Sales to external customers	$ 21,808	$ 21,902
Intersegment sales	1,716	1,124
Net sales	21,808	21,902
Interest income	30	40
Equity in earnings of affiliates	113	124
Operating profit	295	660
Investments in and advances to affiliates	3,379		3,388
Identifiable assets	44,760		41,553
Reportable segment totals [Member]
Segment Information
Operating profit	498	721
Oilseeds Processing
Segment Information
Sales to external customers	9,688	9,071
Intersegment sales	454	389
Net sales	10,142	9,460
Operating profit	336	220
Corn Processing [Member]
Segment Information
Sales to external customers	3,126	3,293
Intersegment sales	35	31
Net sales	3,161	3,324
Operating profit	68	183
Agricultural Services [Member]
Segment Information
Sales to external customers	8,956	9,510
Intersegment sales	1,186	666
Net sales	10,142	10,176
Operating profit	78	323
Other [Member]
Segment Information
Sales to external customers	38	28
Intersegment sales	41	38
Net sales	79	66
Operating profit	16	(5)
Intersegment Elimination [Member]
Segment Information
Net sales	(1,716)	(1,124)
Corporate [Member]
Segment Information
Operating profit	$ (203)	$ (61)