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Divestitures and Other Transactions Divestitures and Other Transactions - PChem Results of Operations (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes		$ 55,000,000	$ 671,000,000	$ (1,748,000,000)
Chemours Contribution to MDL Settlement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation Settlement Amount		29,000,000
MDL Settlement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation Settlement Amount		83,000,000
PFOA Matters: Multi-District Litigation [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation Settlement Amount	$ 670,700,000
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | PFOA Matters: Drinking Water Actions [Member] | Compensatory Damages [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation Settlement Amount		$ 40,000,000
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | Settled Litigation [Member] | PFOA Matters: Drinking Water Actions [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss Contingency, Pending Claims, Number		95
Performance Chemicals [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities for Liabilities Indemnified by Chemours		$ 39,000,000
Performance Chemicals [Member] | Accounts and Notes Receivable [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets for Liabilities Indemnified by Chemours		66,000,000
Performance Chemicals [Member] | Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets for Liabilities Indemnified by Chemours		257,000,000
Performance Chemicals [Member] | Accrued and Other Current Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities for Liabilities Indemnified by Chemours		8,000,000
Performance Chemicals [Member] | Other Noncurrent Obligations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities for Liabilities Indemnified by Chemours		31,000,000
DuPont de Nemours [Member] | PFOA Matters: Multi-District Litigation [Member] | Corteva [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation Settlement Amount	$ 335,000,000
DuPont de Nemours [Member] | Accounts and Notes Receivable [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		27,000,000
DuPont de Nemours [Member] | Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		51,000,000
DuPont de Nemours [Member] | Accrued and Other Current Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		5,000,000
DuPont de Nemours [Member] | Other Noncurrent Obligations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		$ 79,000,000

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