Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 6,341	$ 6,162	$ 12,487	$ 12,105
Topic 815 Revenue	14,825	16,086	28,854	31,990
Revenues	21,166	22,248	41,341	44,095
Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,229	6,049	12,262	11,883
Topic 815 Revenue	14,825	16,086	28,854	31,990
Revenues	21,054	22,135	41,116	43,873
Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	112	113	225	222
Topic 815 Revenue	0	0	0	0
Revenues	112	113	225	222
Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,005	1,804	4,204	3,682
Topic 815 Revenue	14,264	15,529	27,740	30,870
Revenues	16,269	17,333	31,944	34,552
Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,231	2,337	4,248	4,457
Topic 815 Revenue	561	557	1,114	1,120
Revenues	2,792	2,894	5,362	5,577
Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,993	1,908	3,810	3,744
Topic 815 Revenue	0	0	0	0
Revenues	1,993	1,908	3,810	3,744
Point in Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,136	5,910	12,075	11,660
Point in Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,024	5,797	11,850	11,438
Point in Time | Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	112	113	225	222
Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,800	1,552	3,792	3,237
Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,231	2,337	4,248	4,457
Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,993	1,908	3,810	3,744
Over Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	205	252	412	445
Over Time | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	205	252	412	445
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	205	252	412	445
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	1,024	1,177	2,272	2,392
Topic 815 Revenue	9,872	10,569	19,160	20,551
Revenues	10,896	11,746	21,432	22,943
Ag Services | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	819	925	1,860	1,947
Ag Services | Over Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	205	252	412	445
Crushing | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	86	104	185	220
Topic 815 Revenue	2,543	2,746	5,082	5,957
Revenues	2,629	2,850	5,267	6,177
Crushing | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	86	104	185	220
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	895	523	1,747	1,070
Topic 815 Revenue	1,849	2,214	3,498	4,362
Revenues	2,744	2,737	5,245	5,432
Refined Products and Other | Point in Time | Ag Services and Oilseeds | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	895	523	1,747	1,070
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	1,539	1,654	2,923	3,247
Topic 815 Revenue	561	557	1,114	1,120
Revenues	2,100	2,211	4,037	4,367
Starches and Sweeteners | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,539	1,654	2,923	3,247
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	692	683	1,325	1,210
Topic 815 Revenue	0	0	0	0
Revenues	692	683	1,325	1,210
Vantage Corn Processors | Point in Time | Carbohydrate Solutions | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	692	683	1,325	1,210
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	1,161	1,061	2,159	2,025
Topic 815 Revenue	0	0	0	0
Revenues	1,161	1,061	2,159	2,025
Human Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,161	1,061	2,159	2,025
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	832	847	1,651	1,719
Topic 815 Revenue	0	0	0	0
Revenues	832	847	1,651	1,719
Animal Nutrition | Point in Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	832	847	1,651	1,719
Animal Nutrition | Over Time | Nutrition | Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 0	$ 0	$ 0	$ 0