Revenue Disaggregation of Revenue - Products (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Net Sales	$ 17,401	$ 16,908	$ 17,226
Segments
Disaggregation of Revenue [Line Items]
Net Sales	17,401	16,908	17,226
Seed [Member] | Segments
Disaggregation of Revenue [Line Items]
Net Sales	9,898	9,545	9,472
Seed [Member] | Corn [Member]
Disaggregation of Revenue [Line Items]
Net Sales	7,002	6,496	6,447
Seed [Member] | Soybean [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,878	1,927	1,858
Seed [Member] | Other oilseeds [Member]
Disaggregation of Revenue [Line Items]
Net Sales	644	653	708
Seed [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	374	469	459
Crop Protection [Member] | Segments
Disaggregation of Revenue [Line Items]
Net Sales	7,503	7,363	7,754
Crop Protection [Member] | Herbicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	3,730	3,599	4,034
Crop Protection [Member] | Insecticides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,669	1,715	1,598
Crop Protection [Member] | Fungicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,140	1,081	1,112
Crop Protection [Member] | Biologicals
Disaggregation of Revenue [Line Items]
Net Sales	519	476	491
Crop Protection [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	$ 445	$ 492	$ 519