Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 5,988	$ 6,398	$ 18,094	$ 19,873
Topic 815 Revenue	13,949	15,297	45,938	51,084
Revenues	19,937	21,695	64,032	70,957
Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	5,879	6,291	17,763	19,551
Topic 815 Revenue	13,949	15,297	45,938	51,084
Revenues	19,828	21,588	63,701	70,635
Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	109	107	331	322
Topic 815 Revenue	0	0	0	0
Revenues	109	107	331	322
Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,699	1,799	5,382	5,691
Topic 815 Revenue	13,390	14,680	44,260	49,211
Revenues	15,089	16,479	49,642	54,902
Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,349	2,708	6,806	8,370
Topic 815 Revenue	559	617	1,678	1,873
Revenues	2,908	3,325	8,484	10,243
Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,831	1,784	5,575	5,490
Topic 815 Revenue	0	0	0	0
Revenues	1,831	1,784	5,575	5,490
Point in Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	5,739	6,224	17,400	19,321
Point in Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	5,630	6,117	17,069	18,999
Point in Time | Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	109	107	331	322
Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,450	1,625	4,688	5,139
Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,349	2,708	6,806	8,370
Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,831	1,784	5,575	5,490
Over Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	249	174	694	552
Over Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	249	174	694	552
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	249	174	694	552
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	1,073	1,154	3,466	3,620
Topic 815 Revenue	8,580	9,044	29,131	31,639
Revenues	9,653	10,198	32,597	35,259
Ag Services | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	824	980	2,772	3,068
Ag Services | Over Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	249	174	694	552
Ag Services | Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	249	174	694	552
Crushing | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	97	118	317	341
Topic 815 Revenue	2,772	3,234	8,729	10,174
Revenues	2,869	3,352	9,046	10,515
Crushing | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	97	118	317	341
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	529	527	1,599	1,730
Topic 815 Revenue	2,038	2,402	6,400	7,398
Revenues	2,567	2,929	7,999	9,128
Refined Products and Other | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	529	527	1,599	1,730
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	1,633	1,831	4,881	5,787
Topic 815 Revenue	559	617	1,678	1,873
Revenues	2,192	2,448	6,559	7,660
Starches and Sweeteners | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,633	1,831	4,881	5,787
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	716	877	1,925	2,583
Topic 815 Revenue	0	0	0	0
Revenues	716	877	1,925	2,583
Vantage Corn Processors | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	716	877	1,925	2,583
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	1,004	900	3,029	2,802
Topic 815 Revenue	0	0	0	0
Revenues	1,004	900	3,029	2,802
Human Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,004	900	3,029	2,802
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	827	884	2,546	2,688
Topic 815 Revenue	0	0	0	0
Revenues	827	884	2,546	2,688
Animal Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	827	884	2,546	2,688
Animal Nutrition | Over Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 0	$ 0	$ 0	$ 0