Segment Information (Segment Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Information
Revenues	$ 16,565	$ 18,117	$ 51,257	$ 60,307
Earnings Before Income Taxes	367	1,033	1,583	2,134
Assets	40,877		40,877		$ 43,997
Segment Total [Member]
Segment Information
Earnings Before Income Taxes	709	1,073	2,372	2,652
Agricultural Services [Member]
Segment Information
Revenues	6,603	7,043	21,653	25,984
Earnings Before Income Taxes	149	310	495	636
Assets	8,603		8,603		10,250
Merchandising and handling [Member]
Segment Information
Revenues	5,697	6,056	18,798	23,049
Transportation [Member]
Segment Information
Revenues	71	78	182	181
Milling and other [Member]
Segment Information
Revenues	835	909	2,673	2,754
Corn Processing [Member]
Segment Information
Revenues	2,519	3,031	7,564	9,234
Earnings Before Income Taxes	131	348	448	872
Assets	6,135		6,135		6,384
Sweeteners and starches [Member]
Segment Information
Revenues	974	1,005	2,805	2,897
Bioproducts [Member]
Segment Information
Revenues	1,545	2,026	4,759	6,337
Oilseeds Processing [Member]
Segment Information
Revenues	6,747	7,696	19,862	24,031
Earnings Before Income Taxes	335	317	1,148	894
Assets	11,760		11,760		12,712
Crushing and origination [Member]
Segment Information
Revenues	4,222	4,632	12,214	14,615
Refining, packaging, biodiesel, and other [Member]
Segment Information
Revenues	1,762	2,096	5,228	6,488
Cocoa and other [Member]
Segment Information
Revenues	719	895	2,227	2,559
Asia [Member]
Segment Information
Revenues	44	73	193	369
Wild Flavors and Specialty Ingredients [Member]
Segment Information
Revenues	588	264	1,876	817
Earnings Before Income Taxes	70	65	242	198
Assets	3,348		3,348		3,468
Other [Member]
Segment Information
Revenues	108	83	302	241
Earnings Before Income Taxes	24	33	39	52
Assets	7,888		7,888		7,910
Financial [Member]
Segment Information
Revenues	108	83	302	241
Corporate Segment [Member]
Segment Information
Earnings Before Income Taxes	(342)	(40)	(789)	(518)
Assets	3,143		3,143		$ 3,273
Operating Segments [Member] | Agricultural Services [Member]
Segment Information
Revenues	7,623	8,037	24,534	28,874
Operating Segments [Member] | Corn Processing [Member]
Segment Information
Revenues	2,529	3,056	7,609	9,295
Operating Segments [Member] | Oilseeds Processing [Member]
Segment Information
Revenues	7,795	8,328	22,930	26,242
Operating Segments [Member] | Wild Flavors and Specialty Ingredients [Member]
Segment Information
Revenues	593	268	1,887	825
Operating Segments [Member] | Other [Member]
Segment Information
Revenues	164	145	481	420
Intersegment Elimination [Member]
Segment Information
Revenues	(2,139)	(1,717)	(6,184)	(5,349)
Intersegment Elimination [Member] | Agricultural Services [Member]
Segment Information
Revenues	(1,020)	(994)	(2,881)	(2,890)
Intersegment Elimination [Member] | Corn Processing [Member]
Segment Information
Revenues	(10)	(25)	(45)	(61)
Intersegment Elimination [Member] | Oilseeds Processing [Member]
Segment Information
Revenues	(1,048)	(632)	(3,068)	(2,211)
Intersegment Elimination [Member] | Wild Flavors and Specialty Ingredients [Member]
Segment Information
Revenues	(5)	(4)	(11)	(8)
Intersegment Elimination [Member] | Other [Member]
Segment Information
Revenues	$ (56)	$ (62)	$ (179)	$ (179)