Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 6,416	$ 5,988	$ 18,904	$ 18,094
Topic 815 Revenue	13,956	13,949	42,809	45,938
Revenues	20,372	19,937	61,713	64,032
Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,307	5,879	18,570	17,763
Topic 815 Revenue	13,956	13,949	42,809	45,938
Revenues	20,263	19,828	61,379	63,701
Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	109	109	334	331
Topic 815 Revenue	0	0	0	0
Revenues	109	109	334	331
Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,226	1,699	6,431	5,382
Topic 815 Revenue	13,387	13,390	41,126	44,260
Revenues	15,613	15,089	47,557	49,642
Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,165	2,349	6,413	6,806
Topic 815 Revenue	569	559	1,683	1,678
Revenues	2,734	2,908	8,096	8,484
Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,916	1,831	5,726	5,575
Topic 815 Revenue	0	0	0	0
Revenues	1,916	1,831	5,726	5,575
Point in Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,229	5,739	18,306	17,400
Point in Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,120	5,630	17,972	17,069
Point in Time | Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	109	109	334	331
Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,039	1,450	5,833	4,688
Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,165	2,349	6,413	6,806
Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,916	1,831	5,726	5,575
Over Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	187	249	598	694
Over Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	187	249	598	694
Over Time | Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	187	249	598	694
Over Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Over Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Ag Services | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,221	1,073	3,493	3,466
Topic 815 Revenue	9,055	8,580	28,215	29,131
Revenues	10,276	9,653	31,708	32,597
Ag Services | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,034	824	2,895	2,772
Ag Services | Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	187	249	598	694
Crushing | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	130	97	316	317
Topic 815 Revenue	2,450	2,772	7,531	8,729
Revenues	2,580	2,869	7,847	9,046
Crushing | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	130	97	316	317
Crushing | Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Refined Products and Other | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	875	529	2,622	1,599
Topic 815 Revenue	1,882	2,038	5,380	6,400
Revenues	2,757	2,567	8,002	7,999
Refined Products and Other | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	875	529	2,622	1,599
Refined Products and Other | Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Starches and Sweeteners | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,436	1,633	4,359	4,881
Topic 815 Revenue	569	559	1,683	1,678
Revenues	2,005	2,192	6,042	6,559
Starches and Sweeteners | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,436	1,633	4,359	4,881
Starches and Sweeteners | Over Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Vantage Corn Processors | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	729	716	2,054	1,925
Topic 815 Revenue	0	0	0	0
Revenues	729	716	2,054	1,925
Vantage Corn Processors | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	729	716	2,054	1,925
Vantage Corn Processors | Over Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Human Nutrition | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,067	1,004	3,226	3,029
Topic 815 Revenue	0	0	0	0
Revenues	1,067	1,004	3,226	3,029
Human Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,067	1,004	3,226	3,029
Human Nutrition | Over Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0	0	0
Animal Nutrition | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	849	827	2,500	2,546
Topic 815 Revenue	0	0	0	0
Revenues	849	827	2,500	2,546
Animal Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	849	827	2,500	2,546
Animal Nutrition | Over Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 0	$ 0	$ 0	$ 0