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Employee Separation / Asset Related Charges, Net Employee Separation / Asset Related Charges, Net (Asset Impairments) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Impaired Long-Lived Assets Held and Used [Line Items] |  |
Asset impairment charges |  | $ 275 us-gaap_AssetImpairmentCharges
Nonrecurring fair value measurement | 90 us-gaap_AssetsFairValueDisclosureNonrecurring | 150 us-gaap_AssetsFairValueDisclosureNonrecurring
Electronics & Communications [Member] |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |
Asset impairment charges | 129 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember | 150 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember
Performance Chemicals [Member] |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |
Asset impairment charges |  | 33 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember
Performance Materials [Member] |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |
Asset impairment charges |  | $ 92 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dd_ElectronicsCommunicationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dd_PerformanceChemicalsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dd_PerformanceMaterialsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |