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Commitments and Contingent Liabilities (Imprelis) (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended | 24 Months Ended
--- | --- | --- | ---
Jun. 30, 2013 actions | Jun. 30, 2013 actions | Jun. 30, 2013 actions
Product Claims [Line Items] |  |  |
Intended recovery from insurance carriers | $ 100 | $ 100 | $ 100
Insurance program limits | 725 | 725 | 725
Imprelis [Member] |  |  |
Product Claims [Line Items] |  |  |
Individual actions filed | 115 | 115 | 115
Claims filed | 385 | 385 | 385
Plaintiffs' attorney fees to pay per proposed settlement | 7 | 7 | 7
Product claims | 80 | 115 | 865
Product claims upper range | $ 900 | $ 900 | $ 900

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- Definition Claims for property damage that have filed in state court in various jurisdictions. + References No definition available. + Details
Name: | dd_Claimsfiled
Namespace Prefix: | dd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Approximate number of individual actions filed in state court in various jurisdictions. + References No definition available. + Details
Name: | dd_IndividualActionsFiled
Namespace Prefix: | dd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Insurance program limits + References No definition available. + Details
Name: | dd_InsuranceProgramLimits
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Intended recovery from insurance carriers for excess costs + References No definition available. + Details
Name: | dd_IntendedRecoveryFromInsuranceCarriers
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Plaintiffs' attorney fees to pay per proposed settlement + References No definition available. + Details
Name: | dd_PlaintiffsAttorneyFeesToPayPerProposedSettlement
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Charge for product claims + References No definition available. + Details
Name: | dd_ProductClaims
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Product claims upper range + References No definition available. + Details
Name: | dd_ProductClaimsUpperRange
Namespace Prefix: | dd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_ProductLiabilityContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration