Binding settlement agreement, class size

No definition available.

Name:	dd_BindingSettlementAgreementClassSize
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Escrow amount per settlement agreement

+ References

No definition available.

+ Details

Name:	dd_EscrowAmountPerSettlementAgreement
Namespace Prefix:	dd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Escrow amount disbursed.

+ References

No definition available.

+ Details

Name:	dd_Escrowamountdisbursed
Namespace Prefix:	dd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Indemnification asset for liabilities indemnified by Chemours against certain litigation, environmental, workers' compensation and other liabilities that arose prior to the spin-off of Chemours.

+ References

No definition available.

+ Details

Name:	dd_Indemnificationassets
Namespace Prefix:	dd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lawsuits alleging wrongful death

+ References

No definition available.

+ Details

Name:	dd_LawsuitsAllegingWrongfulDeath
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Lawsuits alleging personal injury which have been filed.

+ References

No definition available.

+ Details

Name:	dd_LawsuitsallegingpersonalinjuryFiled
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum escrow amount per settlement agreement

+ References

No definition available.

+ Details

Name:	dd_Minimumescrowamountpersettlementagreement
Namespace Prefix:	dd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of cases for trial through 2017.

+ References

No definition available.

+ Details

Name:	dd_Numberofcasesfortrialthrough2017
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of cases starting May 2017

+ References

No definition available.

+ Details

Name:	dd_NumberofcasesstartingMay2017
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

PFOA MDL plaintiff cases resolved

+ References

No definition available.

+ Details

Name:	dd_PFOAMDLplaintiffcasesresolved
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

PFOA MDL plaintiff cases settled for immaterial amounts

+ References

No definition available.

+ Details

Name:	dd_PFOAMDLplaintiffcasessettledforimmaterialamounts
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

PFOA MDL plaintiff cases tried to a verdict that have been or will be appealed

+ References

No definition available.

+ Details

Name:	dd_PFOAMDLplaintiffcasestriedtoaverdictthathavebeenorwillbeappealed
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

PFOA MDL plaintiff cases voluntarily withdrawn.

+ References

No definition available.

+ Details

Name:	dd_PFOAMDLplaintiffcasesvoluntarilywithdrawn
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The Ohio federal court ("MDL") selected plaintiffs from which individual trials related to PFOA are scheduled.

+ References

No definition available.

+ Details

Name:	dd_PFOAMDLplaintiffs
Namespace Prefix:	dd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=dd_PfoaMattersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=dd_PfoaMattersDrinkingWaterActionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=dd_PaymentforPlaintiffsAttorneyFeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=dd_PaymenttofundcommunityhealthprojectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_KidneycancerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_DamagesTypeAxis=dd_CompensatoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_TesticularcancerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_DamagesTypeAxis=dd_PunitiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_UlcerativecolitisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_PreeclampsiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_ThyroiddiseaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_AllegedinjurytypeAxis=dd_HighcholesterolMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingent Liabilities (Litigation) (Narrative) (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended	14 Months Ended
	Jul. 31, 2005 USD ($)	Dec. 31, 2015 USD ($) lawsuits	Sep. 30, 2016 USD ($) cases lawsuits	Dec. 31, 2004 resident	Dec. 31, 2017 cases	Jan. 31, 2012 USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual, period increase			$ 5.0
PFOA Matters [Member]
Loss Contingencies [Line Items]
Accrual balance			18.0
Indemnification assets			18.0
PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Binding settlement agreement, class size \| resident				80,000
Loss contingency, potential additional loss			235.0
Escrow deposit						$ 1.0
Minimum escrow amount per settlement agreement						$ 0.5
Escrow amount disbursed (less than)			$ 1.0
Lawsuits alleging personal injury - Filed \| lawsuits		3,500	3,500
Lawsuits alleging wrongful death \| lawsuits			30
PFOA MDL plaintiffs \| cases			6
PFOA MDL plaintiff cases tried to a verdict that have been or will be appealed \| cases			2
PFOA MDL plaintiff cases voluntarily withdrawn			1
PFOA MDL plaintiff cases resolved \| cases			4
Payment for Plaintiffs Attorney Fees [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Settlement payments	$ 23.0
Payment to fund community health project [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Settlement payments	$ 70.0
Scenario, Forecast [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Number of cases for trial through 2017 \| cases					40
Number of cases starting May 2017 \| cases					38
Kidney cancer [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			200
PFOA MDL plaintiff cases settled for immaterial amounts \| cases			2
Kidney cancer [Member] \| Compensatory [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value		$ 1.6
Testicular cancer [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			70
Testicular cancer [Member] \| Compensatory [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value			$ 5.1
Testicular cancer [Member] \| Punitive [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value			$ 0.5
Ulcerative colitis [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			300
Preeclampsia [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			200
Thyroid disease [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			1,430
High cholesterol [Member] \| PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Lawsuits alleging personal injury - Filed \| lawsuits			1,340