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Commitments and Contingent Liabilities Litigation - Leach and MDL Settlement (Details) | 3 Months Ended | 12 Months Ended | 108 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2004 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2017 lawsuits | Jan. 01, 2012
PFOA Matters: Drinking Water Actions [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Binding Settlement Agreement Class Size |  |  | 80,000 |  |  |
Loss Contingency, Number Of Water Districts Receiving Water Treatment |  |  |  |  |  | 6
Litigation Settlement, Liability For Medical Monitoring Program, Threshold |  |  | $ 235,000,000 |  |  |
Litigation Settlement, Medical Monitoring Program, Escrow Account, Disbursements To Date |  |  |  | $ 2,000,000 |  |
Escrow Balance |  | $ 1,000,000 |  | $ 1,000,000 |  |
PFOA Matters: Multi-District Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Disease Categories for MDL |  | 6 |  | 6 |  |
Lawsuits alleging personal injury filed | lawsuits |  |  |  |  | 3,550 |
Litigation Settlement Amount | $ 670,700,000 |  |  |  |  |
DuPont de Nemours and Corteva Contribution to MDL Settlement [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount |  | $ 27,000,000 |  |  |  |
MDL Settlement [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount |  | 83,000,000 |  |  |  |
Chemours Contribution to MDL Settlement [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount |  | $ 29,000,000 |  |  |  |
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | PFOA Matters: Drinking Water Actions [Member] | Scheduled for Trial [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  | 96 |  | 96 |  |
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | PFOA Matters: Drinking Water Actions [Member] | Settled Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  | 95 |  | 95 |  |
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | Compensatory Damages [Member] | PFOA Matters: Drinking Water Actions [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount |  | $ 40,000,000 |  |  |  |
Post-MDL Settlement PFOA Personal Injury Claims [Domain] | Loss of Consortium [Member] | PFOA Matters: Drinking Water Actions [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount |  | 10,000,000 |  |  |  |
Chemours [Member] | PFOA Matters [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Indemnification Assets for Liabilities Indemnified by Chemours |  | 17,000,000 |  | $ 17,000,000 |  |
Liability relating to testing drinking water in and around certain former EID sites and offering treatment or alternative supply of drinking water. |  | $ 21,000,000 |  | $ 21,000,000 |  |
DuPont de Nemours [Member] | PFOA Matters: Multi-District Litigation [Member] | Corteva [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation Settlement Amount | $ 335,000,000 |  |  |  |  |

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