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Commitments and Contingent Liabilities Chemours (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) | Jun. 30, 2018 USD ($) | Sep. 30, 2021 USD ($) | Mar. 31, 2029 USD ($) | Dec. 31, 2028 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2017 lawsuits
Settlement Agreement |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Income (loss) from discontinued operations before income taxes | $ 11.0 |  |  |  |  |  |
Performance Chemicals |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Income (loss) from discontinued operations before income taxes | 8.0 |  | $ 45.0 |  |  |  |
PFAS [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Escrow Account Balance |  |  |  |  | $ 700.0 |  |
PFAS [Member] | Maximum [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Cost Sharing Arrangement Term |  |  | 20 years |  |  |  |
Qualified Spend and Escrow Account Contribution Threshold | 4,000.0 |  | $ 4,000.0 |  |  |  |
Corteva and DuPont stray liability threshold for PFAS | 300.0 |  | 300.0 |  |  |  |
PFOA Matters: Multi-District Litigation [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | $ 670.7 |  |  |  |  |
Lawsuits alleging personal injury filed | lawsuits |  |  |  |  |  |  | 3,550
DuPont de Nemours [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Amount credited to each company's threshold | $ 150.0 |  | $ 150.0 |  |  |  |
Chemours [Member] | PFAS [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Annual Escrow Deposit |  |  |  |  |  | $ 100.0 |
Annual Escrow Deposit, remainder of period |  |  |  | $ 50.0 |  |  |
Chemours [Member] | PFAS [Member] | Maximum [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Total Escrow Deposit Amount |  |  |  | 500.0 |  |  |
Corteva [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stray liability sharing percentage | 29.00% |  | 29.00% |  |  |  |
Corteva [Member] | PFAS [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stray liability sharing percentage for PFAS | 50.00% |  | 50.00% |  |  |  |
Corteva [Member] | DuPont de Nemours [Member] | PFAS [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stray liability sharing percentage for PFAS | 50.00% |  | 50.00% |  |  |  |
Annual Escrow Deposit |  |  |  |  |  | $ 100.0 |
Annual Escrow Deposit, remainder of period |  |  |  | 50.0 |  |  |
Escrow Account Deposit Percentage | 50.00% |  | 50.00% |  |  |  |
Corteva [Member] | DuPont de Nemours [Member] | PFAS [Member] | Maximum [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Qualified Spend and Escrow Account Contribution Threshold | $ 2,000.0 |  | $ 2,000.0 |  |  |  |
Total Escrow Deposit Amount |  |  |  | $ 500.0 |  |  |
DuPont de Nemours [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stray liability sharing percentage | 71.00% |  | 71.00% |  |  |  |
DuPont de Nemours [Member] | PFAS [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Stray liability sharing percentage for PFAS | 50.00% |  | 50.00% |  |  |  |
DuPont de Nemours [Member] | DuPont de Nemours [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Corteva and DuPont stray liability threshold for PFAS | $ 200.0 |  | $ 200.0 |  |  |  |

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- Definition No later than each of September 30, 2021 and September 30, 2022, Chemours shall deposit $100 million into an escrow account and DuPont and Corteva shall together deposit $100 million in the aggregate into an escrow account. + References No definition available. + Details
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- Definition No later than September 30 of each subsequent year through and including 2028, Chemours shall deposit $50 million into an escrow account and DuPont and Corteva shall together deposit $50 million in the aggregate into an escrow account + References No definition available. + Details
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- Definition Amount by which if escrow is below, on December 31, 2028, then Chemours will make 50% of the deposits and DuPont and Corteva together will make 50% of the deposits necessary to restore the balance of the escrow account to $700MM. + References No definition available. + Details
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- Definition From September 30, 2021 through September 30, 2028, Chemours will deposit a total of $500 million in the escrow account and DuPont and Corteva will deposit an additional $500 million pursuant to the terms of the Letter Agreement. + References No definition available. + Details
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