Commitments and Contingent Liabilities Corteva Separation (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
PFAS [Member] | Minimum [Member]
Loss Contingencies [Line Items]
De minimis threshold	$ 1
DuPont de Nemours and Dow [Member] | Accounts and Notes Receivable [Member]
Loss Contingencies [Line Items]
Indemnification Assets	103	$ 104	$ 40
DuPont de Nemours and Dow [Member] | Other assets, Noncurrent
Loss Contingencies [Line Items]
Indemnification Assets	283	263	138
DuPont de Nemours and Dow [Member] | Accrued and Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Indemnified Liabilities	28	26	17
DuPont de Nemours and Dow [Member] | Other noncurrent obligations
Loss Contingencies [Line Items]
Indemnified Liabilities	$ 103	154	149
Corteva [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	29.00%
Corteva [Member] | Accounts and Notes Receivable [Member]
Loss Contingencies [Line Items]
Indemnification Assets	$ 182
Corteva [Member] | Accrued and Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability	$ 416	$ 874	$ 175
DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	71.00%