Commitments and Contingent Liabilities Litigation - Chemours Separation (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) lawsuits	Dec. 31, 2029 USD ($)	Dec. 31, 2028 USD ($)	Sep. 30, 2028 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2022 USD ($)
Corteva [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	29.00%
DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	71.00%
Accounts and Notes Receivable [Member] | Corteva [Member]
Loss Contingencies [Line Items]
Indemnification Assets	$ 188
Accounts and Notes Receivable [Member] | Chemours [Member]
Loss Contingencies [Line Items]
Indemnification Assets	138				$ 43
Other Assets [Member] | Chemours [Member]
Loss Contingencies [Line Items]
Indemnification Assets	470				280
Accrued and Other Current Liabilities [Member] | Corteva [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability	874				228
PFAS [Member]
Loss Contingencies [Line Items]
MOU Terms for Withdrawals	125
Withdrawal Amount after Year 6		$ 200
Threshold to waive MOU escrow account funding obligation						$ 100
MOU Escrow Account Balance	$ 105
PFAS [Member] | Forecast [Member]
Loss Contingencies [Line Items]
Escrow Account Balance			$ 700
PFAS [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Cost Sharing Arrangement Term	20 years
Qualified Spend and Escrow Account Contribution Threshold	$ 4,000
PFAS [Member] | Chemours [Member]
Loss Contingencies [Line Items]
Escrow Account Deposit Percentage	50.00%
PFAS [Member] | Corteva [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Qualified Spend and Escrow Account Contribution Threshold	$ 600
PFAS [Member] | Corteva and DuPont
Loss Contingencies [Line Items]
Corteva and DuPont stray liability sharing percentage for PFAS	50.00%
Amount credited to each company's threshold	$ 150
Escrow Account Deposit Percentage	50.00%
PFAS [Member] | Corteva and DuPont | Maximum [Member]
Loss Contingencies [Line Items]
Qualified Spend and Escrow Account Contribution Threshold	$ 2,000
Corteva and Dupont stray liability threshold for PFAS	$ 300
PFAS [Member] | Chemours [Member]
Loss Contingencies [Line Items]
Annual escrow deposit							$ 100
PFAS [Member] | DuPont de Nemours and Corteva [Member]
Loss Contingencies [Line Items]
Annual escrow deposit							$ 100
PFAS [Member] | No later than September 30 of each subsequent year through and including 2028 | Chemours [Member] | Subsequent Event
Loss Contingencies [Line Items]
Annual escrow deposit, remainder of period				$ 50
PFAS [Member] | No later than September 30 of each subsequent year through and including 2028 | Chemours [Member] | Subsequent Event | Maximum [Member]
Loss Contingencies [Line Items]
Total Escrow Deposit Amount				500
PFAS [Member] | No later than September 30 of each subsequent year through and including 2028 | Corteva and DuPont | Subsequent Event
Loss Contingencies [Line Items]
Annual escrow deposit, remainder of period				50
PFAS [Member] | No later than September 30 of each subsequent year through and including 2028 | Corteva and DuPont | Subsequent Event | Maximum [Member]
Loss Contingencies [Line Items]
Total Escrow Deposit Amount				$ 500
Asbestos Issue
Loss Contingencies [Line Items]
Pending Lawsuits, Number | lawsuits	900
Asbestos Issue | Chemours [Member]
Loss Contingencies [Line Items]
Indemnification Assets	$ 87				38
Estimated Litigation Liability	$ 88				$ 38