Supplementary Information Other Income (Expense) - Net (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Sundry Income (Expense) - Net [Line Items]
Interest income		$ 77	$ 56	$ 59
Equity in earnings (losses) of affiliates - net		14	0	(9)
Net gain on sales of businesses and other assets	[1]	21	(2)	64
Net exchange losses	[2]	(54)	(174)	(99)
Non-operating pension and other post employment benefit credit (cost)	[3]	1,318	368	191
Miscellaneous income (expenses) - net	[4]	(28)	(36)	9
Other income (expense) - net		1,348	212	215
Segment Reconciling Items [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Interest income		(77)	(56)	(59)
Net exchange losses	[5]	54	174	66
Non-operating pension and other post employment benefit credit (cost)		(1,256)	(316)	(129)
(Loss) Gain on sale or disposition of assets	[6],[7]		(388)
Employee Retention Credit		60
Contract Termination Cost		(54)
Segment Reconciling Items [Member] | Crop Protection [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Employee Retention Credit		23
Contract Termination Cost		(24)
Deconsolidation of a subsidiary [Member] | Segment Reconciling Items [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
(Loss) Gain on sale or disposition of assets	[7]			(67)
La Porte | Segment Reconciling Items [Member] | Crop Protection [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
(Loss) Gain on sale or disposition of assets		(53)
APAC Business [Member] | Segment Reconciling Items [Member] | Crop Protection [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
(Loss) Gain on sale or disposition of assets		27
Hedging Program [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Net exchange losses		18	89	(58)
Hedging Program [Member] | Argentine peso devaluation [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Net exchange losses		$ (67)	(82)	(51)
Hedging Program [Member] | Argentine peso devaluation [Member] | Segment Reconciling Items [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Net exchange losses			$ (33)
Hedging Program [Member] | Tax Reform Foreign Currency Exchange Impact [Member] | Segment Reconciling Items [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Net exchange losses	[7]			$ (33)

[1] The year ended December 31, 2020 includes a loss of $(53) million and a gain of $27 million relating to the expected sale of the La Porte site, for which the company signed an agreement in 2020, and the sale of a business in Asia Pacific in the crop protection segment, respectively.

[2] Includes net pre-tax exchange gains (losses) of $(67) million, $(82) million and $(51) million associated with the devaluation of the Argentine peso for the years ended December 31, 2021, 2020 and 2019, respectively.

[3] Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected long-term rate of return on plan assets, amortization of unrecognized gain (loss), amortization of prior service benefit and settlement gain (loss)). 

[4] Miscellaneous income (expenses) - net, includes losses from sale of receivables, tax indemnification adjustments related to changes in indemnification balances as a result of the application of the terms of the Tax Matters Agreement between Corteva and Dow and/or DuPont, and other items. The year ended December 31, 2021 also includes the Employee Retention Credit of $60 million pursuant to the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act as enhanced by the Consolidated Appropriations Act (“CAA”) and American Rescue Plan Act (“ARPA”), a gain from the remeasurement of an equity investment of $47 million, a charge related to a contract termination with a third-party service provider of $(54) million and the 2021 officer indemnification payment. 

[5] Excludes a $(33) million foreign exchange loss for the year ended December 31, 2019 associated with the devaluation of the Argentine peso. See Note 9 - Supplementary Information, to the Consolidated Financial Statements, for additional information.2.Effective January 1, 2021, on a prospective basis, the company excludes net unrealized gain or loss from mark-to-market activity for certain foreign currency derivative instruments that do not qualify for hedge accounting. There were no unrealized mark-to-market (gains) losses for the years ended December 31, 2020 and 2019.

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

[7] The year ended December 31, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X that was in effect prior to recent amendments.