Pension Plans and Other Post Employment Benefit Plans Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2026
Defined Benefit and Contribution Disclosures [Line Items]
Pre-tax cash requirements to cover actual net claims costs and related administrative expenses	$ 96	$ 101	$ 97
Trust Asset	$ 204	316
U.S. Retirement Savings Plan [Member]
Defined Benefit and Contribution Disclosures [Line Items]
Employer Matching Contribution, Percent of Match	100.00%
Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%
Employer Discretionary Contribution Percent	3.00%
Defined Contribution Plan, Employer Contribution	$ 99	100	101
Employers Discretionary Contribution, Vesting Period	3 years
Trust Agreement [Member]
Defined Benefit and Contribution Disclosures [Line Items]
Trust Asset Distribution	$ 37	48
Trust Asset	147	176
Corteva Other Contribution Plans [Member]
Defined Benefit and Contribution Disclosures [Line Items]
Defined Contribution Plan, Employer Contribution	51	46	45
Pension Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	(2)	0
Actuarial (gain) loss	(383)	580
Employer contributions	40	50
Other Post Employment Benefits Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	0	0
Actuarial (gain) loss	(15)	51
Employer contributions	96	101
Other Post Employment Benefits Plan | Forecast [Member]
Defined Benefit and Contribution Disclosures [Line Items]
Expected Future Employer Contributions, Next Fiscal Year				$ 100
Other Pension Plan [Member]
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Employer contributions	$ 40	$ 50	$ 52
Other Pension Plan [Member] | Forecast [Member]
Defined Benefit and Contribution Disclosures [Line Items]
Expected Future Employer Contributions, Next Fiscal Year				$ 40