Statement of Stockholders Equity Statement - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comp (Loss) Income	Noncontrolling Interest [Member]	EID [Member]	EID [Member] Preferred Stock [Member]	EID [Member] Common Stock [Member]	EID [Member] Additional Paid-in Capital [Member]	EID [Member] Retained Earnings [Member]	EID [Member] Accumulated Other Comp (Loss) Income	EID [Member] Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2019	$ 24,555	$ 7	$ 27,997	$ (425)	$ (3,270)	$ 246	$ 20,528	$ 239	$ 0	$ 23,958	$ (406)	$ (3,270)	$ 7
Net income (loss)	282			272		10	258				250		8
Other comprehensive (loss) income	(663)				(663)		(663)					(663)
Common Dividends ($.13 per share)	(97)		(97)
Issuance of Corteva Stock	14		14				14			14
Dividends, Preferred Stock							(2)			(2)
Share-based compensation	2		2				2			2
Repurchase of common stock	(50)		(50)
Other-net	36		40	(2)		(2)	30			32	(2)
Ending Balance at Mar. 31, 2020	24,079	7	27,906	(155)	(3,933)	254	20,167	239	0	24,004	(158)	(3,933)	15
Beginning Balance at Dec. 31, 2020	25,063	7	27,707	0	(2,890)	239	21,601	239	0	24,049	203	(2,890)	0
Net income (loss)	603			600		3	592				591		1
Other comprehensive (loss) income	(477)				(477)		(477)					(477)
Common Dividends ($.13 per share)	(97)		(97)
Issuance of Corteva Stock	38		38				38			38
Dividends, Preferred Stock							(2)				(2)
Repurchase of common stock	(350)		(18)	(332)
Other-net	(2)					(2)	(4)			(4)
Ending Balance at Mar. 31, 2021	$ 24,778	$ 7	$ 27,630	$ 268	$ (3,367)	$ 240	$ 21,748	$ 239	$ 0	$ 24,083	$ 792	$ (3,367)	$ 1