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Long-Term Employee Benefits (Schedule of Assumptions Used to Determine Benefit Obligations) (Details) | Dec. 31, 2014 | Dec. 31, 2013
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Pension Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Discount rate | 3.78%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_PensionPlansDefinedBenefitMember |  | 4.58%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_PensionPlansDefinedBenefitMember |
Rate of compensation increase | 4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_PensionPlansDefinedBenefitMember | [1] | 4.22%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_PensionPlansDefinedBenefitMember | [1]
Other Long-Term Employee Benefit Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Discount rate | 3.95%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |  | 4.60%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Rate of compensation increase | 0.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | [1] | 0.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / dd_PostretirementBenefitsTypeofDeferredCompensationAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | [1]
[1] | The rate of compensation increase represents the single annual effective salary increase that an average plan participant would receive during the participant's entire career at the company.

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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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