Segment Information (Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Information
Revenues	$ 20,696	$ 21,727
Segment operating profit	366	375
Reportable segment totals [Member]
Segment Information
Segment operating profit	691	630
Oilseeds Processing [Member]
Segment Information
Revenues	7,803	8,143
Segment operating profit	334	313
Corn Processing [Member]
Segment Information
Revenues	2,830	3,053
Segment operating profit	196	153
Agricultural Services [Member]
Segment Information
Revenues	9,974	10,500
Segment operating profit	153	151
Other Segments [Member]
Segment Information
Revenues	89	31
Segment operating profit	8	13
Corporate Segment [Member]
Segment Information
Segment operating profit	(325)	(255)
Gross Revenues [Member] | Oilseeds Processing [Member]
Segment Information
Revenues	8,398	8,712
Gross Revenues [Member] | Corn Processing [Member]
Segment Information
Revenues	2,849	3,087
Gross Revenues [Member] | Agricultural Services [Member]
Segment Information
Revenues	11,075	12,141
Gross Revenues [Member] | Other Segments [Member]
Segment Information
Revenues	146	87
Intersegment Elimination [Member]
Segment Information
Revenues	(1,772)	(2,300)
Intersegment Elimination [Member] | Oilseeds Processing [Member]
Segment Information
Revenues	595	569
Intersegment Elimination [Member] | Corn Processing [Member]
Segment Information
Revenues	19	34
Intersegment Elimination [Member] | Agricultural Services [Member]
Segment Information
Revenues	1,101	1,641
Intersegment Elimination [Member] | Other Segments [Member]
Segment Information
Revenues	$ 57	$ 56