Exchange Ratio

No definition available.

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

- Definition

Ownership interest in an entity

+ References

No definition available.

+ Details

Name:	dd_Ownershipinterestinanentity
Namespace Prefix:	dd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dd_CompanyAxis=dd_CortevaMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=dd_EIDMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=dd_DASMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dd_CompanyAxis=dd_EIDMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=dd_DowMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=dd_CortevaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConversionOfStockByUniqueDescriptionAxis=dd_SharesofDowDuPontCommonStockHeldMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_ConversionOfStockByUniqueDescriptionAxis=dd_SharesofCortevaStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Background and Basis of Presentation (Details)	12 Months Ended
Background and Basis of Presentation (Details)	Dec. 31, 2019 $ / shares shares	Feb. 07, 2020 $ / shares	Jun. 03, 2019 $ / shares shares	Jun. 01, 2019 $ / shares shares	Apr. 01, 2019 $ / shares	Dec. 31, 2018 $ / shares shares
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized \| shares	1,666,667,000
Corteva [Member]
Number of Reportable Segments	2
Number of Countries in which Entity Operates	140
EID [Member]
Common Stock, Par or Stated Value Per Share	$ 0.30	$ 0.30				$ 0.30
Common Stock, Shares Authorized \| shares	1,800,000,000					1,800,000,000
EID [Member] \| Corteva [Member]
Ownership interest in an entity	100.00%
DAS [Member] \| EID [Member]
Ownership interest in an entity	100.00%
Dow [Member]
Common Stock, Par or Stated Value Per Share					$ 0.01
Corteva [Member] \| Corteva [Member]
Common Stock, Par or Stated Value Per Share			$ 0.01	$ 0.01
Common Stock, Shares Authorized \| shares			748,815,000	748,815,000
Shares of DowDuPont Common Stock Held [Member] \| Corteva [Member]
Exchange Ratio				3
Shares of Corteva Stock [Member] \| Corteva [Member]
Exchange Ratio				1