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Summary of Significant Accounting Policies Summary of Accounting Policies (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Foreign Exchange Impact on Income (Loss) from Continuing Operations | $ 20 |
Percentage deterioration of the official Peso to USD exchange rate | 10.00% |
Internal Reorganization [Member] |  |
Reclassification of Divisional Equity to APIC |  | $ 40

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- Definition Impact to pre-tax earnings as a result of the deterioration of the Peso to USD exchange rate + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Increase of deterioration in the official Peso to USD exchange rate which would cause a reduction in net monetary assets and negatively impact pre-tax earnings. + References No definition available. + Details
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Namespace Prefix: | dd_
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- Definition Amount of other increase (decrease) in additional paid in capital (APIC). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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