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Summary of Significant Accounting Policies Venezuelan Foreign Currency Translation (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2015 USD ($)
Venezuelan Foreign Currency Translation [Abstract] |
SIMADI pre-tax charge | $ 3

X
- Definition Pre-tax charge related to the remeasurement of the company's VEF denominated net monetary assets using the SIMADI rate. + References No definition available. + Details
Name: | dd_SIMADIpretaxcharge
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Venezuelan Foreign Currency Translation [Abstract] + References No definition available. + Details
Name: | dd_VenezuelanForeignCurrencyTranslationAbstract
Namespace Prefix: | dd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration