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Related Party Transactions Dow Intercompany Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Corteva [Member] | EID [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Interest Expense, Related Party | $ 11 | $ 19 | $ 39 | $ 82

X
- Definition Amount of interest expense incurred on a debt or other obligation to related party. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=dd_EIDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |