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Employee Separation / Asset Related Charges, Net Employee Separation / Asset Related Charges, Net (Narrative) (Details) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2014
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring reserve | $ 277 us-gaap_RestructuringReserve |  |  | $ 277 us-gaap_RestructuringReserve |  |  |  |
Charge associated with restructuring actions |  |  | 19 dd_ChargeAssociatedWithRestructuringActions |  |  |  |  |
Restructuring charges | 299 us-gaap_RestructuringAndRelatedCostIncurredCost |  |  | 440 us-gaap_RestructuringAndRelatedCostIncurredCost |  |  | 134 us-gaap_RestructuringAndRelatedCostIncurredCost |
Restructuring reserve, accrual adjustment |  |  |  |  |  | (16)us-gaap_RestructuringReserveAccrualAdjustment |  |
2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring reserve | 268 us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  | 268 us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Restructuring charges |  |  |  | 562 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  | 263 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember
Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 234 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
Agriculture [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 134 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember |  |  | 11 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember |
Agriculture [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 134 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_AgricultureMember |  |  |  |
Electronics & Communications [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 84 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember |  |  | 9 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember |
Electronics & Communications [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 84 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_ElectronicsCommunicationsMember |  |  |  |
Industrial Biosciences [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 13 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember |  |  | 3 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember |
Industrial Biosciences [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 13 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_IndustrialBiosciencesMember |  |  |  |
Nutrition & Health [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 15 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember |  |  | 49 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember |
Nutrition & Health [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 15 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_NutritionHealthMember |  |  |  |
Performance Chemicals [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 21 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember |  |  | 3 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember |
Performance Chemicals [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 21 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceChemicalsMember |  |  |  |
Performance Materials [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  |  |  |  | 19 dd_ChargeAssociatedWithRestructuringActions / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |
Restructuring charges |  |  |  | 99 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |  | 12 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |
Performance Materials [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 99 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |  |  |
Safety & Protection [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 52 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember |  |  | 58 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember |
Safety & Protection [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 52 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_SafetyProtectionMember |  |  |  |
Other [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 22 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_OtherSegmentMember |  |  | (11)us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_StatementBusinessSegmentsAxis = dd_OtherSegmentMember |
Other [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 22 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_OtherSegmentMember |  |  |  |
Employee Separation / Asset Related Charges, Net [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  | 9 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember |  |  |  |  |
Restructuring charges |  |  |  | 375 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember |  |  |  |
Restructuring reserve, accrual adjustment |  |  | (24)us-gaap_RestructuringReserveAccrualAdjustment / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember |  |  |  |  |
Employee Separation / Asset Related Charges, Net [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges | 234 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  | 497 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Employee Separation / Asset Related Charges, Net [Member] | Performance Materials [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  |  |  |  | 9 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_EmployeeSeparationAssetRelatedChargesNetMember / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |
Other income, net [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  | 10 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_OtherIncomeNetMember |  |  |  |  |
Other income, net [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions | 65 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_OtherIncomeNetMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  | 65 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_OtherIncomeNetMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Other income, net [Member] | Performance Materials [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  |  |  |  | 10 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_OtherIncomeNetMember / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |
Other income, net [Member] | Performance Materials [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Charge associated with restructuring actions |  |  |  | 65 dd_ChargeAssociatedWithRestructuringActions / us-gaap_IncomeStatementLocationAxis = dd_OtherIncomeNetMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember / us-gaap_StatementBusinessSegmentsAxis = dd_PerformanceMaterialsMember |  |  |  |
Corporate Expenses [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  | 122 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_IncomeStatementLocationAxis = dd_CorporateExpensesMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Employee Severance [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring reserve | 264 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  | 264 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Restructuring charges |  |  |  | 319 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Employee Severance [Member] | Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 157 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
Other Non-Personnel Charges [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring reserve | 4 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = dd_OtherNonPersonnelChargesMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember | [1] |  | 4 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = dd_OtherNonPersonnelChargesMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember | [1] |  |  |
Restructuring charges |  |  |  | 17 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = dd_OtherNonPersonnelChargesMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember | [1] |  |  |
Other Non-Personnel Charges [Member] | Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 8 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = dd_OtherNonPersonnelChargesMember / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
Asset Related [Member] | 2014 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring reserve | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Restructuring charges |  |  |  | 226 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_A2014RestructuringProgramMember |  |  |  |
Asset Related [Member] | Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 69 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
Asset Impairment Charges [Member] | Asset Related [Member] | Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | 30 us-gaap_RestructuringAndRelatedCostIncurredCost / dd_AssetRelatedChargesAxis = dd_AssetImpairmentChargesMember / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
Asset Shut Down Charges [Member] | Asset Related [Member] | Restructuring Program 2012 [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  | $ 39 us-gaap_RestructuringAndRelatedCostIncurredCost / dd_AssetRelatedChargesAxis = dd_AssetShutDownChargesMember / us-gaap_RestructuringCostAndReserveAxis = dd_AssetRelatedMember / us-gaap_RestructuringPlanAxis = dd_RestructuringProgram2012Member |
[1] | Other non-personnel charges consist of contractual obligation costs.

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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867 + Details
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