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