Commitments and Contingent Liabilities Chemours (Details) - USD ($) $ in Millions		60 Months Ended
	Jul. 01, 2015	Jul. 06, 2022	Sep. 30, 2020
PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Limited Sharing of Potential Future Liabilities, Period		5 years
Additional annual PFOA liabilities for the next five years paid by Corteva			$ 25
Chemours [Member] | PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Additional annual PFOA liabilities for the next five years paid by Chemours			25
Chemours [Member] | Accounts and Notes Receivable [Member]
Loss Contingencies [Line Items]
Indemnification Asset for liabilities indemnified by Chemours			65
Chemours [Member] | Other Assets [Member]
Loss Contingencies [Line Items]
Indemnification Asset for liabilities indemnified by Chemours			274
Chemours [Member] | Accrued and Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Indemnified Liabilities for liabilities indemnified by Chemours			(65)
Chemours [Member] | Other noncurrent obligations
Loss Contingencies [Line Items]
Indemnified Liabilities for liabilities indemnified by Chemours			$ (274)
Chemours [Member]
Loss Contingencies [Line Items]
Proceeds from Dividends Received	$ 3,910