Revenue Disaggregation of Revenue - Principal Product Groups (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net Sales	$ 4,601	$ 4,178
Seed [Member]
Disaggregation of Revenue [Line Items]
Net Sales	2,524	2,492
Seed [Member] | Corn [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,930	1,888
Seed [Member] | Soybean [Member]
Disaggregation of Revenue [Line Items]
Net Sales	172	177
Seed [Member] | Other oilseeds [Member]
Disaggregation of Revenue [Line Items]
Net Sales	277	296
Seed [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	145	131
Crop Protection [Member]
Disaggregation of Revenue [Line Items]
Net Sales	2,077	1,686
Crop Protection [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	150	54
Crop Protection [Member] | Herbicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,205	986
Crop Protection [Member] | Insecticides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	418	385
Crop Protection [Member] | Fungicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	$ 304	$ 261