Revenue Disaggregation of Revenue - Principal Product Groups (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Net Sales	$ 6,252	$ 5,627	$ 10,853	$ 9,805
Seed [Member]
Disaggregation of Revenue [Line Items]
Net Sales	3,947	3,780	6,471	6,272
Seed [Member] | Corn [Member]
Disaggregation of Revenue [Line Items]
Net Sales	2,222	2,180	4,152	4,068
Seed [Member] | Soybean [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,308	1,160	1,480	1,337
Seed [Member] | Other oilseeds [Member]
Disaggregation of Revenue [Line Items]
Net Sales	246	271	523	567
Seed [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	171	169	316	300
Crop Protection [Member]
Disaggregation of Revenue [Line Items]
Net Sales	2,305	1,847	4,382	3,533
Crop Protection [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	139	107	289	161
Crop Protection [Member] | Herbicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	1,224	969	2,429	1,955
Crop Protection [Member] | Insecticides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	494	460	912	845
Crop Protection [Member] | Fungicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	$ 448	$ 311	$ 752	$ 572