EID - Basis of Presentation Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2021	Aug. 05, 2021	Jul. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
EID [Member]
Common Stock, Shares, Outstanding	200			200	200
Common Stock, Par Value	$ 0.30		$ 0.30	$ 0.30	$ 0.30
Common Stock, Shares, Outstanding	730,267,000			743,458,000	747,492,000
Common Stock, Par Value	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Corteva [Member] | EID [Member]
Ownership interest in an entity	100.00%
Corteva [Member]
Common Stock, Par Value	$ 0.01	$ 0.01