Segment and Geographic Information (Segment Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Information
Property, Plant and Equipment, Additions	$ 1,005	$ 699
Revenues	85,249	64,355	$ 64,656
Depreciation	807	800	823
Asset Abandonments and Impairments	73	28	131
Interest income	96	111	196
Equity in earnings of affiliates	595	579	454
Interest Expense	(265)	(339)	(402)
Operating profit	3,313	1,883	1,588
Investments in and advances to affiliates	5,285	4,913
Assets	56,136	49,719
Ag Services and Oilseeds [Member]
Segment Information
Revenues	67,047	49,716	48,741
Carbohydrate Solutions [Member]
Segment Information
Revenues	11,110	8,472	9,886
Nutrition [Member]
Segment Information
Revenues	6,712	5,800	5,677
Other Segments [Member]
Segment Information
Revenues	380	367	352
Operating Segments [Member]
Segment Information
Operating profit	4,638	3,455	2,948
Operating Segments [Member] | Ag Services and Oilseeds [Member]
Segment Information
Property, Plant and Equipment, Additions	451	261
Revenues	70,455	55,667	54,633
Depreciation	349	351	361
Asset Abandonments and Impairments	10	8	130
Interest income	27	39	51
Equity in earnings of affiliates	500	475	378
Operating profit	2,775	2,105	1,935
Investments in and advances to affiliates	4,826	4,402
Assets	25,976	24,792
Operating Segments [Member] | Carbohydrate Solutions [Member]
Segment Information
Property, Plant and Equipment, Additions	260	251
Revenues	12,672	9,423	11,154
Depreciation	322	305	320
Asset Abandonments and Impairments	13	0	1
Equity in earnings of affiliates	70	81	60
Operating profit	1,283	717	644
Investments in and advances to affiliates	358	392
Assets	6,238	5,963
Operating Segments [Member] | Nutrition [Member]
Segment Information
Property, Plant and Equipment, Additions	242	149
Revenues	6,933	5,959	5,786
Depreciation	101	114	113
Asset Abandonments and Impairments	50	13	0
Interest income	1	2	1
Equity in earnings of affiliates	24	22	17
Operating profit	691	574	418
Investments in and advances to affiliates	56	102
Assets	10,142	8,652
Operating Segments [Member] | Other Segments [Member]
Segment Information
Property, Plant and Equipment, Additions	7	8
Revenues	380	367	352
Depreciation	8	6	6
Interest income	16	40	125
Operating profit	25	52	85
Assets	9,235	7,152
Intersegment Eliminations [Member]
Segment Information
Revenues	(5,191)	(7,061)	(7,269)
Intersegment Eliminations [Member] | Ag Services and Oilseeds [Member]
Segment Information
Revenues	(3,408)	(5,951)	(5,892)
Intersegment Eliminations [Member] | Carbohydrate Solutions [Member]
Segment Information
Revenues	(1,562)	(951)	(1,268)
Intersegment Eliminations [Member] | Nutrition [Member]
Segment Information
Revenues	(221)	(159)	(109)
Corporate, Non-Segment [Member]
Segment Information
Property, Plant and Equipment, Additions	45	30
Depreciation	27	24	23
Asset Abandonments and Impairments	0	7	0
Interest income	52	30	19
Equity in earnings of affiliates	1	1	(1)
Operating profit	(1,325)	(1,572)	(1,360)
Investments in and advances to affiliates	45	17
Assets	4,545	3,160
Nonoperating Income (Expense) [Member] | Segment Reconciling Items [Member]
Segment Information
Operating profit	77	83	12
Asset impairment, restructuring, and settlement [Member] | Segment Reconciling Items [Member]
Segment Information
Operating profit	(213)	(76)	(146)
Ag Services [Member] | Ag Services and Oilseeds [Member]
Segment Information
Revenues	45,017	32,726	31,705
Crushing [Member] | Ag Services and Oilseeds [Member]
Segment Information
Revenues	11,368	9,593	9,479
Refined Products and Other [Member] | Ag Services and Oilseeds [Member]
Segment Information
Revenues	10,662	7,397	7,557
Starches and sweeteners [Member] | Carbohydrate Solutions [Member]
Segment Information
Revenues	7,611	6,387	6,854
Bioproducts [Member] | Carbohydrate Solutions [Member]
Segment Information
Revenues	3,499	2,085	3,032
Wild and Specialty Ingredients [Member] | Nutrition [Member]
Segment Information
Revenues	3,189	2,812	2,745
Animal Nutrition [Member] | Nutrition [Member]
Segment Information
Revenues	$ 3,523	$ 2,988	$ 2,932