EID - Basis of Presentation Narrative (Details) - $ / shares	6 Months Ended
	Jun. 30, 2020	Jul. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Jun. 26, 2019	Jun. 01, 2019
Common Stock, Shares, Outstanding	748,485,000		748,577,000	748,815,000
Common Stock, Par Value	$ 0.01	$ 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	748,485,000		748,577,000
Common Stock, Par Value	$ 0.01				$ 0.01	$ 0.01
Corteva [Member] | EID [Member]
Ownership interest in an entity	100.00%