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Background and Basis of Presentation (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Dec. 31, 2021 $ / shares shares | Dec. 31, 2019 USD ($) | Feb. 03, 2022 $ / shares | Dec. 31, 2020 $ / shares shares | Jun. 26, 2019 $ / shares | Jun. 03, 2019 $ / shares shares | Jun. 01, 2019 | Apr. 01, 2019 $ / shares
Common Stock, Par Value |  | $ 0.01 |  | $ 0.01 | $ 0.01 |  |  |  |
Common Stock, Shares Authorized | shares |  | 1,666,667,000 |  |  | 1,666,667,000 |  |  |  |
Internal Reorganization [Member] |  |  |  |  |  |  |  |  |
Reclassification of Divisional Equity to Additional Paid in Capital | $ | $ 40 |  |  |  |  |  |  |  |
EID [Member] |  |  |  |  |  |  |  |  |
Common Stock, Par Value |  | $ 0.30 |  | $ 0.30 | $ 0.30 |  |  |  |
Common Stock, Shares Authorized | shares |  | 1,800,000,000 |  |  | 1,800,000,000 |  |  |  |
Reclassification of Divisional Equity to Additional Paid in Capital | $ |  |  | $ 0 |  |  |  |  |  |
EID [Member] | Corteva [Member] |  |  |  |  |  |  |  |  |
Ownership interest in an entity |  | 100.00% |  |  |  |  |  |  |
Dow [Member] |  |  |  |  |  |  |  |  |
Common Stock, Par Value |  |  |  |  |  |  |  |  | $ 0.01
Corteva [Member] |  |  |  |  |  |  |  |  |
Number of Reportable Segments |  | 2 |  |  |  |  |  |  |
Common Stock, Par Value |  |  |  |  |  | $ 0.01 | $ 0.01 |  |
Common Stock, Shares Authorized | shares |  |  |  |  |  |  | 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 |

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