EID - Basis of Presentation Narrative (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020	Dec. 31, 2019	Jun. 26, 2019	Jun. 01, 2019	Mar. 31, 2019
Common Stock, Shares, Outstanding	748,369,000		748,577,000
Common Stock, Par Value	$ 0.01	$ 0.01	$ 0.01
EID [Member]
Common Stock, Shares, Outstanding	200		200			100
Common Stock, Par Value	$ 0.30	$ 0.30	$ 0.30			$ 0.30
Corteva [Member]
Common Stock, Shares, Outstanding	748,369,000		748,577,000
Common Stock, Par Value	$ 0.01			$ 0.01	$ 0.01
Corteva [Member] | EID [Member]
Ownership interest in an entity	100.00%