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Other Intangible Assets (Schedule of Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | $ 4,095 us-gaap_FiniteLivedIntangibleAssetsGross |  | $ 4,226 us-gaap_FiniteLivedIntangibleAssetsGross |
Definite-lived Intangible Assets, Accumulated Amortization | (1,923)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  | (1,845)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |
Definite-lived Intangible Assets, Net | 2,172 us-gaap_FiniteLivedIntangibleAssetsNet |  | 2,381 us-gaap_FiniteLivedIntangibleAssetsNet |
Indefinite-lived Intangible Assets | 2,135 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |  | 2,199 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |
Total Intangible Assets, Gross | 6,230 dd_TotalIntangibleAssetsGross |  | 6,425 dd_TotalIntangibleAssetsGross |
Total Intangible Assets, Accumulated Amortization | (1,923)dd_TotalIntangibleAssetsAccumulatedAmortization |  | (1,845)dd_TotalIntangibleAssetsAccumulatedAmortization |
Intangible Assets Net Excluding Goodwill | 4,307 us-gaap_IntangibleAssetsNetExcludingGoodwill |  | 4,580 us-gaap_IntangibleAssetsNetExcludingGoodwill |
In Process Research and Development [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Indefinite-lived Intangible Assets | 25 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember |  | 29 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember |
Microbial Cell Factories [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Indefinite-lived Intangible Assets | 306 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = dd_MicrobialCellFactoriesMember |  | 306 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = dd_MicrobialCellFactoriesMember |
Pioneer Germplasm [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Indefinite-lived Intangible Assets | 1,063 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = dd_PioneerGermplasmMember |  | 1,064 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = dd_PioneerGermplasmMember |
Trademarks/Tradenames [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Indefinite-lived Intangible Assets | 741 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |  | 800 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |
Customer Lists [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | 1,612 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  | 1,706 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |
Definite-lived Intangible Assets, Accumulated Amortization | (475)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  | (470)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |
Definite-lived Intangible Assets, Net | 1,137 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |  | 1,236 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember |
Patents [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | 470 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |  | 493 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Definite-lived Intangible Assets, Accumulated Amortization | (202)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |  | (199)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Definite-lived Intangible Assets, Net | 268 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |  | 294 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Purchased and Licensed Technology [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | 1,772 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |  | 1,789 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |
Definite-lived Intangible Assets, Accumulated Amortization | (1,142)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |  | (1,074)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |
Definite-lived Intangible Assets, Net | 630 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |  | 715 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = dd_PurchasedAndLicensedTechnologyMember |
Trademarks [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | 31 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |  | 31 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Definite-lived Intangible Assets, Accumulated Amortization | (14)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |  | (14)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Definite-lived Intangible Assets, Net | 17 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |  | 17 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Other [Member] |  |  |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |
Definite-lived Intangible Assets, Gross | 210 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1] | 207 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1]
Definite-lived Intangible Assets, Accumulated Amortization | (90)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1] | (88)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1]
Definite-lived Intangible Assets, Net | $ 120 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1] | $ 119 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherCreditDerivativesMember | [1]
[1] | Primarily consists of sales and grower networks, marketing and manufacturing alliances and noncompetition agreements.

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