Segment Reporting Significant Items (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Restructuring and Asset Related Charges - Net		$ 179	$ 60	$ 249	$ 121
Loss on Extinguishment of Debt		0	(13)	0	(13)	[1]
Significant Items		179	455	302	640	[2]
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset Related Charges - Net	[3]	(179)	(60)	(249)	(121)
Integration and Separation Costs	[4]		(330)		(430)
Loss on Divestiture	[5]				(24)
Amortization of inventory step up included in COGS	[6]		(52)		(52)
Loss on Extinguishment of Debt	[7]		(13)		(13)
Significant Items		(179)	(455)	(302)	(640)
Segment Reconciling Items [Member] | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[8]			(53)
Segment Reconciling Items [Member] | Seed [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset Related Charges - Net	[3]	(135)	(49)	(145)	(76)
Amortization of inventory step up included in COGS	[6]		(52)		(52)
Significant Items		(135)	(101)	(145)	(152)
Segment Reconciling Items [Member] | Seed [Member] | Sale of JV [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[5],[6]				(24)
Segment Reconciling Items [Member] | Crop Protection [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset Related Charges - Net	[3]	(40)	(2)	(58)	(25)
Loss on Divestiture	[8]			(53)
Significant Items		(40)	(2)	(111)	(25)
Segment Reconciling Items [Member] | Crop Protection [Member] | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[8]			(53)
Segment Reconciling Items [Member] | Corporate
Segment Reporting Information [Line Items]
Restructuring and Asset Related Charges - Net	[3]	(4)	(9)	(46)	(20)
Integration and Separation Costs	[4]		(330)		(430)
Loss on Extinguishment of Debt	[7]		(13)		(13)
Significant Items		$ (4)	$ (352)	$ (46)	$ (463)

[1] The cash flows for the six months ended June 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

[2] Period is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.

[3] Includes Board approved restructuring plans and asset related charges as well as accelerated prepaid amortization expense. See Note 5 - Restructuring and Asset Related Charges - Net, for additional information.

[4] Includes a charge related to the amortization of the inventory that was stepped up to fair value in connection with the Merger.

[5] Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions.

[6] Includes a loss on early extinguishment of debt related to the difference between the redemption price and the par value of the Make Whole Notes and Term Loan Facility, partially offset by the write-off of unamortized step-up related to the fair value step-up of EID's debt.

[7] Includes a loss recorded in other income - net related to the expected sale of the La Porte site.

[8] Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Business Separations.