Commitments and Contingent Liabilities Environmental (Details) $ in Millions	Mar. 31, 2026 USD ($)
Loss Contingencies [Line Items]
Indemnification Asset	$ 335
Accrual for Environmental Loss Contingencies	559
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	572
Superfund Sites [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	48
Superfund Sites [Member] | Chemours [Member] | Indemnification Agreement [Member]
Loss Contingencies [Line Items]
Indemnification Asset	21
DuPont de Nemours [Member] | DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability threshold	200
Chemours related obligation subject to indemnification [Member]
Loss Contingencies [Line Items]
Indemnification Asset	251	[1],[2]
Accrual for Environmental Loss Contingencies	263	[1],[2],[3]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	205	[1],[2],[3]
Discontinued Operations [Member]
Loss Contingencies [Line Items]
Indemnification Asset	35	[1]
Other discontinued or divested business obligations [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	71	[1],[3]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	202	[1],[3]
Environmental remediation liabilities primarily related to DuPont - subject to indemnity from DuPont [Member]
Loss Contingencies [Line Items]
Indemnification Asset	49	[2]
Accrual for Environmental Loss Contingencies	54	[2],[3]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	53	[2],[3]
Not subject to indemnification [Member]
Loss Contingencies [Line Items]
Indemnification Asset	0
Accrual for Environmental Loss Contingencies	113
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	106
Indemnification liabilities related to the MOU
Loss Contingencies [Line Items]
Indemnification Asset	0	[4]
Accrual for Environmental Loss Contingencies	58	[3],[4]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	$ 6	[3],[4]

[1] Represents liabilities that are subject to the $200 million threshold and sharing arrangements as discussed in the section entitled “Corteva Separation Agreement” within Note 12 - Commitments and Contingent Liabilities, to the interim Consolidated Financial Statements.

[2] The company has recorded an indemnification asset related to these accruals, including $21 million related to the Superfund sites.

[3] Accrual balance represents management’s best estimate of the costs of remediation and restoration, although it is reasonably possible that the potential exposure, as indicated, could range above the amounts accrued, as there are inherent uncertainties in these estimates. Accrual balance includes $48 million for remediation of Superfund sites. Amounts do not include possible impacts from the remediation elements of the EPA’s October 2021 PFAS Strategic Roadmap (as applicable), except as disclosed in the section entitled “Fayetteville Works Facility, North Carolina” within Note 12 - Commitments and Contingent Liabilities, to the interim Consolidated Financial Statements, relating to Chemours' remediation activities at the Fayetteville Works Facility pursuant to the Consent Order with the North Carolina Department of Environmental Quality (“NC DEQ”).

[4] Represents liabilities that are subject to the $150 million threshold and sharing agreements as discussed in the section entitled “Chemours Separation Agreement (Performance Chemicals)” within Note 12 - Commitments and Contingent Liabilities, to the interim Consolidated Financial Statements.