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Summary of Significant Accounting Policies Venezuelan Foreign Currency Translation (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
Venezuelan Foreign Currency Translation [Abstract] |
SIMADI pre-tax charge | $ 3 dd_SIMADIpretaxcharge

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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- Details
Name: | dd_VenezuelanForeignCurrencyTranslationAbstract
Namespace Prefix: | dd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration