Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 6,139	$ 6,146
Topic 815 Revenue	14,351	14,029
Revenues	20,490	20,175
Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	6,014	6,034
Topic 815 Revenue	14,351	14,029
Revenues	20,365	20,063
Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	125	112
Topic 815 Revenue	0	0
Revenues	125	112
Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,172	2,199
Topic 815 Revenue	13,829	13,476
Revenues	16,001	15,675
Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,037	2,018
Topic 815 Revenue	522	553
Revenues	2,559	2,571
Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,805	1,817
Topic 815 Revenue	0	0
Revenues	1,805	1,817
Point in Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	5,957	5,939
Point in Time \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	5,832	5,827
Point in Time \| Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	125	112
Point in Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,990	1,992
Point in Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	2,037	2,018
Point in Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,805	1,817
Over Time
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	182	207
Over Time \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	182	207
Over Time \| Other Business
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Over Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	182	207
Over Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Over Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Ag Services \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,163	1,248
Topic 815 Revenue	9,441	9,288
Revenues	10,604	10,536
Ag Services \| Point in Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	981	1,041
Ag Services \| Over Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	182	207
Crushing \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	137	100
Topic 815 Revenue	2,558	2,539
Revenues	2,695	2,639
Crushing \| Point in Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	137	100
Crushing \| Over Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Refined Products and Other \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	872	851
Topic 815 Revenue	1,830	1,649
Revenues	2,702	2,500
Refined Products and Other \| Point in Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	872	851
Refined Products and Other \| Over Time \| Ag Services and Oilseeds \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Starches and Sweeteners \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,409	1,384
Topic 815 Revenue	522	553
Revenues	1,931	1,937
Starches and Sweeteners \| Point in Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,409	1,384
Starches and Sweeteners \| Over Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Vantage Corn Processors \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	628	634
Topic 815 Revenue	0	0
Revenues	628	634
Vantage Corn Processors \| Point in Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	628	634
Vantage Corn Processors \| Over Time \| Carbohydrate Solutions \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Human Nutrition \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,025	998
Topic 815 Revenue	0	0
Revenues	1,025	998
Human Nutrition \| Point in Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	1,025	998
Human Nutrition \| Over Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	0	0
Animal Nutrition \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	780	819
Topic 815 Revenue	0	0
Revenues	780	819
Animal Nutrition \| Point in Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	780	819
Animal Nutrition \| Over Time \| Nutrition \| Operating Segments
Revenue from Contract with Customer [Abstract]
Topic 606 Revenue	$ 0	$ 0