Supplementary Information Other Income (Expense) - Net (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest income		$ 136	$ 132	$ 283
Equity in earnings (losses) of affiliates - net		13	15	10
Net gain (loss) on sales of businesses and other assets		41	17	22
Net exchange gains (losses)	[1]	(181)	(284)	(397)
Non-operating pension and other post-employment benefit credits (costs)	[2]	(23)	(144)	(119)
Miscellaneous income (expenses) - net	[3]	(556)	(36)	(247)
Other income (expense) - net		$ (570)	$ (300)	$ (448)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other income (expense) - net	Other income (expense) - net	Other income (expense) - net
Argentina, Pesos
Net exchange gains (losses)		$ (34)	$ (66)	$ (284)

[1] Includes net pre-tax exchange gains (losses) of $(34) million, $(66) million and $(284) million, associated with impacts from the devaluation of the Argentine peso for the years ended December 31, 2025, 2024 and 2023, respectively.

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

[3] 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, 2025 includes a charge related to the Bayer resolution offset by the receipt of insurance proceeds. The year ended December 31, 2024 includes the receipt of insurance proceeds and an indemnification payment negotiated with the prior Stoller owners. The years ended December 31, 2024 and 2023 also include estimated settlement reserves. The year ended December 31, 2023 also includes an Employee Retention Credit 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”). See Note 22 - Segment Information, to the Consolidated Financial Statements, for additional information on significant items.