Asset Impairment, Exit, and Restructuring Costs - Asset Impairment Charges and Exit Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Feb. 04, 2025
Schedule of Equity Method Investments [Line Items]
Restructuring and exit costs	$ 73,000,000	$ 0	$ 237,000,000	$ 15,000,000
Impairment charge - goodwill and other intangible assets		43,000,000	173,000,000	43,000,000
Impairment charge - other long-lived assets	0	464,000,000	11,000,000	474,000,000
Total asset impairment, exit, and restructuring costs	246,000,000	507,000,000	421,000,000	532,000,000
Expected cost savings					$ 500,000,000
Wilmar
Schedule of Equity Method Investments [Line Items]
Equity method investment, other-than-temporary impairment		461,000,000	0	461,000,000
Operating Segments | Nutrition
Schedule of Equity Method Investments [Line Items]
Restructuring and exit costs	67,000,000		190,000,000	3,000,000
Impairment charge - goodwill and other intangible assets		43,000,000		43,000,000
Operating Segments | Nutrition | Wilmar
Schedule of Equity Method Investments [Line Items]
Impairment charge - other long-lived assets			11,000,000
Operating Segments | Ag Services and Oilseeds Segment
Schedule of Equity Method Investments [Line Items]
Restructuring and exit costs	5,000,000		34,000,000
Operating Segments | Carbohydrate Solutions Segment
Schedule of Equity Method Investments [Line Items]
Restructuring and exit costs			5,000,000
Corporate
Schedule of Equity Method Investments [Line Items]
Restructuring and exit costs	1,000,000		8,000,000	12,000,000
Impairment charge - goodwill and other intangible assets	173,000,000		173,000,000
Total asset impairment, exit, and restructuring costs	$ 89,000,000	$ 504,000,000	$ 361,000,000	$ 517,000,000