Segment Information - Reportable Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Information
Revenue from external customers	$ 22,681	$ 21,166	$ 43,171	$ 41,341
Selling, general, and administrative expenses	1,026	911	1,987	1,843
Impairment, exit, restructuring charges, and settlement contingencies	(13)	(137)	(25)	(175)
ADM's share of equity method investment non-recurring (charges)	142	134	231	278
Earnings Before Income Taxes	1,088	279	1,472	632
Operating Segments
Segment Information
Revenue from external customers	22,575	21,054	42,940	41,116
Segment operating profit	1,450	830	2,214	1,577
ADM's share of equity method investment non-recurring (charges)	141	135	229	281
Operating Segments | Ag Services and Oilseeds
Segment Information
Revenue from external customers	17,916	16,269	33,917	31,944
Cost of materials	16,031	14,940	30,793	29,280
Manufacturing costs	940	867	1,834	1,747
Selling, general, and administrative expenses	229	223	439	415
Other segment items	(151)	(140)	(289)	(289)
Segment operating profit	867	379	1,140	791
ADM's share of equity method investment non-recurring (charges)	102	109	151	219
Operating Segments | Carbohydrate Solutions
Segment Information
Revenue from external customers	2,757	2,792	5,316	5,362
Cost of materials	1,591	1,745	3,052	3,347
Manufacturing costs	691	647	1,383	1,325
Selling, general, and administrative expenses	96	83	186	165
Other segment items	(32)	(20)	(72)	(51)
Segment operating profit	411	337	767	576
ADM's share of equity method investment non-recurring (charges)	31	21	65	50
Operating Segments | Nutrition
Segment Information
Revenue from external customers	1,902	1,993	3,707	3,810
Cost of materials	1,115	1,214	2,169	2,354
Manufacturing costs	326	326	655	645
Selling, general, and administrative expenses	300	284	592	562
Other segment items	(11)	55	(16)	39
Segment operating profit	172	114	307	210
ADM's share of equity method investment non-recurring (charges)	8	5	13	12
Other Business
Segment Information
Revenue from external customers	106	112	231	225
Segment operating profit	80	94	133	190
Corporate
Segment Information
Segment operating profit	(460)	(498)	(883)	(939)
Gains on sales of assets and businesses	21	8	83	8
Impairment, exit, restructuring charges, and settlement contingencies	(3)	(224)	(20)	(273)
Gain on contract termination		69		69
ADM's share of equity method investment non-recurring (charges)	$ 1	$ (1)	2	$ (3)
Corporate | Wilmar
Segment Information
ADM's share of equity method investment non-recurring (charges)			$ (55)