Revenue Disaggregation of Revenue - Products (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) reportableSegments	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)
Disaggregation of Revenue [Line Items]
Net Sales	$ 6,379	$ 6,456	$ 11,284	$ 10,873
Number of Reportable Segments \| reportableSegments	2
Segments
Disaggregation of Revenue [Line Items]
Net Sales	$ 6,379	6,456	11,284	10,873
Seed [Member] \| Segments
Disaggregation of Revenue [Line Items]
Net Sales	4,532	4,537	7,555	7,244
Seed [Member] \| Corn [Member]
Disaggregation of Revenue [Line Items]
Net Sales	2,868	2,961	5,241	5,030
Seed [Member] \| Soybean [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,318	1,257	1,624	1,562
Seed [Member] \| Other oilseeds [Member]
Disaggregation of Revenue [Line Items]
Net Sales	228	186	473	409
Seed [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	118	133	217	243
Crop Protection [Member] \| Segments
Disaggregation of Revenue [Line Items]
Net Sales	1,847	1,919	3,729	3,629
Crop Protection [Member] \| Herbicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	932	995	1,959	1,855
Crop Protection [Member] \| Insecticides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	399	436	776	772
Crop Protection [Member] \| Fungicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	263	342	597	646
Crop Protection [Member] \| Biologicals
Disaggregation of Revenue [Line Items]
Net Sales	86	97	156	181
Crop Protection [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	$ 167	$ 49	$ 241	$ 175