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Commitments and Contingent Liabilities (Guarantees) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | $ 498 us-gaap_GuaranteeObligationsMaximumExposure |  | $ 513 us-gaap_GuaranteeObligationsMaximumExposure
Customer and Supplier Guarantee [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 315 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeMember |  |
Collateral assets and personal guarantees percentage | 47.00%us-gaap_GuaranteeObligationsLiquidationProceedsPercentage / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeMember |  |
Customer and Supplier Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 314 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeBankBorrowingsMember | [1] |
Guaranteed obligations, maximum term | 7 dd_GuaranteedObligationsMaximumTerm / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeBankBorrowingsMember | [1] |
Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 1 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeEquipmentAndFacilityLeasesMember | [1] |
Guaranteed obligations, maximum term | 4 dd_GuaranteedObligationsMaximumTerm / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeEquipmentAndFacilityLeasesMember | [1] |
Equity Affiliates, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 183 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_EquityAffiliatesGuaranteeBankBorrowingsMember | [2] |
Guaranteed obligations, maximum term | 1 dd_GuaranteedObligationsMaximumTerm / us-gaap_GuaranteeObligationsByNatureAxis = dd_EquityAffiliatesGuaranteeBankBorrowingsMember | [2] |
Guarantee Obligations, Long Term [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 85 us-gaap_GuaranteeObligationsMaximumExposure / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteeObligationsLongTermMember |  |
Guarantee Obligations, Long Term [Member] | Customer and Supplier Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 84 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeBankBorrowingsMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteeObligationsLongTermMember | [1] |
Guarantee Obligations, Long Term [Member] | Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 1 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeEquipmentAndFacilityLeasesMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteeObligationsLongTermMember | [1] |
Guarantee Obligations, Long Term [Member] | Equity Affiliates, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 0 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_EquityAffiliatesGuaranteeBankBorrowingsMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteeObligationsLongTermMember | [2] |
Guaranteed Obligations Short Term [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 413 us-gaap_GuaranteeObligationsMaximumExposure / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteedObligationsShortTermMember |  |
Guaranteed Obligations Short Term [Member] | Customer and Supplier Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 230 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeBankBorrowingsMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteedObligationsShortTermMember | [1] |
Guaranteed Obligations Short Term [Member] | Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | 0 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_CustomerAndSupplierGuaranteeEquipmentAndFacilityLeasesMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteedObligationsShortTermMember | [1] |
Guaranteed Obligations Short Term [Member] | Equity Affiliates, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee obligations | $ 183 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = dd_EquityAffiliatesGuaranteeBankBorrowingsMember / dd_GuarantorObligationsByTimePeriodOfCommitmentAxis = dd_GuaranteedObligationsShortTermMember | [2] |
[1] | Existing guarantees for customers and suppliers, as part of contractual agreements.
[2] | Existing guarantees for equity affiliates' liquidity needs in normal operations.

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- Definition Guaranteed Obligations Maximum Term, Years + References No definition available. + Details
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- Details
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- Definition Indicates, if estimable, (as a percentage) the approximate extent to which the proceeds from liquidation of any assets held either as collateral or by third parties would be expected to cover the maximum potential amount of future payments under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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