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Long-Term Debt and Available Credit Facilities Uncommitted Credit Facilities and Outstanding Letters of Credit (Details) $ in Millions | Dec. 31, 2020 USD ($)
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Debt Instrument [Line Items] |
Line Of Credit Facility, Remaining Borrowing Capacity, Uncommitted Amount | $ 418
Letters of Credit Outstanding, Amount | $ 175

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- Definition Line Of Credit Facility, Remaining Borrowing Capacity, Uncommitted Amount + References No definition available. + Details
Name: | ctva_LineOfCreditFacilityRemainingBorrowingCapacityUncommittedAmount
Namespace Prefix: | ctva_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant