DEI Document - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 07, 2020
Jun. 30, 2019
Dec. 31, 2018
Document Information [Line Items]    
Document Annual Reporttrue   
Document Type10-K   
Amendment Flagfalse   
Document Period End DateDec. 31, 2019   
Entity Registrant NameCorteva, Inc.   
Entity Incorporation, State or Country CodeDE   
Entity Central Index Key0001755672   
Current Fiscal Year End Date--12-31   
Document Fiscal Year Focus2019   
Document Fiscal Period FocusFY   
Entity Well-known Seasoned IssuerYes   
Entity Voluntary FilersNo   
Entity Current Reporting StatusYes   
Entity Interactive Data CurrentYes   
Entity Filer CategoryLarge Accelerated Filer   
Entity Emerging Growth Companyfalse   
Entity Public Float  $ 22,100,000,000 
Entity Common Stock, Shares Outstanding 749,403,000  
Common Stock, Par or Stated Value Per Share$ 0.01$ 0.01  
Entity Small Businessfalse   
Entity Shell Companyfalse   
Document Transition Reportfalse   
Entity File Number001-38710   
Entity Tax Identification Number82-4979096   
Entity Address, Address Line One974 Centre Road,   
Entity Address, City or TownWilmington,   
Entity Address, State or ProvinceDE   
Entity Address, Postal Zip Code19805   
City Area Code(302)   
Local Phone Number485-3000   
Documents Incorporated by Reference [Text Block]Information pertaining to certain Items in Part III of this report is incorporated by reference to portions of Corteva, Inc.'s definitive 2019 Annual Meeting Proxy Statement to be filed within 120 days after the end of the year covered by this Annual Report on Form 10-K, pursuant to Regulation 14A (the Proxy).   
Common Stock [Member]    
Document Information [Line Items]    
Title of 12(b) SecurityCommon Stock, par value $0.01 per share   
Trading SymbolCTVA   
Security Exchange NameNYSE   
EID [Member]    
Document Information [Line Items]    
Document Type10-K   
Amendment Flagfalse   
Document Period End DateDec. 31, 2019   
Entity Registrant NameE. I. du Pont de Nemours and Company   
Entity Incorporation, State or Country CodeDE   
Entity Central Index Key0000030554   
Current Fiscal Year End Date--12-31   
Document Fiscal Year Focus2019   
Document Fiscal Period FocusFY   
Entity Well-known Seasoned IssuerNo   
Entity Voluntary FilersNo   
Entity Current Reporting StatusYes   
Entity Interactive Data CurrentYes   
Entity Filer CategoryNon-accelerated Filer   
Entity Emerging Growth Companyfalse   
Entity Common Stock, Shares Outstanding 200  
Common Stock, Par or Stated Value Per Share$ 0.30$ 0.30 $ 0.30
Entity Small Businessfalse   
Entity Shell Companyfalse   
Entity File Number1-815   
Entity Tax Identification Number51-0014090   
Entity Address, Address Line One974 Centre Road,   
Entity Address, City or TownWilmington,   
Entity Address, State or ProvinceDE   
Entity Address, Postal Zip Code19805   
City Area Code(302)   
Local Phone Number485-3000   
EID [Member] | $3.50 Series Preferred Stock [Member]    
Document Information [Line Items]    
Title of 12(b) Security$3.50 Series Preferred Stock    
Trading SymbolCTAPrA   
Security Exchange NameNYSE   
EID [Member] | $4.50 Series Preferred Stock [Member]    
Document Information [Line Items]    
Title of 12(b) Security$4.50 Series Preferred Stock   
Trading SymbolCTAPrB   
Security Exchange NameNYSE   

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