Consolidated Statements of Equity - USD ($) $ in Millions	Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Divisional Equity [Member]	Retained Earnings [Member]	Accumulated Other Comp Loss	Treasury Stock [Member]	Noncontrolling Interest [Member]	EID [Member]		EID [Member] Preferred Stock [Member]	EID [Member] Common Stock [Member]	EID [Member] Additional Paid-in Capital [Member]	EID [Member] Divisional Equity [Member]	EID [Member] Retained Earnings [Member]	EID [Member] Accumulated Other Comp Loss	EID [Member] Treasury Stock [Member]	EID [Member] Noncontrolling Interest [Member]	Corteva [Member]	Corteva [Member] Additional Paid-in Capital [Member]	Corteva [Member] EID [Member]	Corteva [Member] EID [Member] Additional Paid-in Capital [Member]	DowDuPont [Member]	DowDuPont [Member] Divisional Equity [Member]	DowDuPont [Member] EID [Member]	DowDuPont [Member] EID [Member] Divisional Equity [Member]
Beginning Balance at Dec. 31, 2017	$ 79,593		$ 0	$ 0	$ 80,318	$ 0	$ (1,177)	$ 0	$ 452	$ 79,593		$ 0	$ 0	$ 0	$ 80,557	$ 0	$ (1,177)	$ 0	$ 213
Net income (loss)	(5,027)	[1]			(5,065)				38	(5,027)	[2]				(5,055)				28
Net other comprehensive income (loss)	(2,183)						(2,183)			(2,183)							(2,183)
Dividends, Preferred Stock										(10)					(10)
Distributions to Dow and DowDuPont	(2,806)	[1]			(2,806)					(2,806)	[2]				(2,806)									$ 2,806
Contributions from Dow and DowDuPont	5,363	[1]			5,363					5,363	[2]				5,363
Issuance of stock	85				85					85					85
Share-based compensation	129				129					129					129
Stockholders' Equity, Other	(1)				(4)				3	9					(4)				13
Ending Balance at Dec. 31, 2018	75,153		0	0	78,020	0	(3,360)	0	493	75,153		0	0	0	78,259	0	(3,360)	0	254
Net income (loss)	(941)	[1]			(641)	(318)			18	(1,022)	[2]				(640)	(390)			8
Net other comprehensive income (loss)	(1,124)						(1,124)			(1,124)							(1,124)
Dividends, Common Stock	(194)			(97)		(97)
Dividends, Preferred Stock										(10)				(2)	(2)	(6)
Distributions to Dow and DowDuPont	(317)	[1]			(317)					(317)	[2]				(317)									317
Contributions from Dow and DowDuPont	7,396	[1]			7,396					3,255	[2]				3,255
Issuance of stock																				$ 8	$ 8	$ 8	$ 8	$ 39	$ 39	$ 39	$ 39
Share-based compensation	103			41	62					103				41	62
Common Stock Repurchase	(25)			(25)
Impact of Internal Reorganizations	(55,496)				(56,479)		1,214		(231)	(55,496)					(56,479)		1,214		(231)
Reclassification of Divisional Equity to Additional Paid in Capital	0		7	28,070	(28,077)					0		239		23,936	(24,175)
Stockholders' Equity, Other	(47)				$ (3)	(10)			(34)	(61)				(25)	$ (2)	(10)			(24)
Ending Balance at Dec. 31, 2019	24,555		7	27,997		(425)	(3,270)	0	246	20,528		239	0	23,958		(406)	(3,270)	0	7
Net income (loss)	701					681			20	625						615			10
Net other comprehensive income (loss)	380						380			380							380
Dividends, Common Stock	(388)			(194)		(194)
Dividends, Preferred Stock										(10)				(5)		(5)
Distributions to Dow and DowDuPont	0									0
Contributions from Dow and DowDuPont	0									0
Issuance of stock	56																				$ 56	$ 56	$ 56
Retained Earnings, Share-based Compensation						(1)										(1)
Share-based compensation	59			60						59				60
Common Stock Repurchase	(275)			(216)		(59)
Acquisition of a noncontrolling interest in consolidated subsidiaries	(52)			(37)					(15)	(52)				(37)					(15)
Stockholders' Equity, Other	27			41		(2)			(12)	15				17					(2)
Ending Balance at Dec. 31, 2020	$ 25,063		$ 7	$ 27,707		$ 0	$ (2,890)	$ 0	$ 239	$ 21,601		$ 239	$ 0	$ 24,049		$ 203	$ (2,890)	$ 0	$ 0

[1] The cash flows for the years ended December 31, 2018 and 2019 includes cash flows of EID's ECP and Specialty Products Entities.

[2] The cash flows for the year ended December 31, 2018 and 2019 includes cash flows of EID's ECP and Specialty Products Entities