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Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Goodwill [Line Items] |  |  |
Goodwill balance | $ 4,529 us-gaap_Goodwill | $ 4,713 us-gaap_Goodwill | $ 4,616 us-gaap_Goodwill
Goodwill adjustments and acquisitions | (184)us-gaap_GoodwillPeriodIncreaseDecrease | 97 us-gaap_GoodwillPeriodIncreaseDecrease |
Agriculture [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 318 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember | 330 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember | 231 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember
Goodwill adjustments and acquisitions | (12)us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember | 99 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember |
Electronics & Communications [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 149 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember | 149 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember | 149 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember
Goodwill adjustments and acquisitions | 0 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember | 0 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember |
Industrial Biosciences [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 847 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember | 898 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember | 890 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember
Goodwill adjustments and acquisitions | (51)us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember | 8 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember |
Nutrition & Health [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 2,193 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember | 2,315 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember | 2,314 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember
Goodwill adjustments and acquisitions | (122)us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember | 1 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember |
Performance Chemicals [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 197 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember | 198 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember | 198 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember
Goodwill adjustments and acquisitions | (1)us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember | 0 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember |
Performance Materials [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 375 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember | 375 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember | 388 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember
Goodwill adjustments and acquisitions | 0 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember | (13)us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |
Safety & Protection [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill balance | 450 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember | 448 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember | 446 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember
Goodwill adjustments and acquisitions | $ 2 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember | $ 2 us-gaap_GoodwillPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember |

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