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Stockholders' Equity Noncontrolling Interest (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Noncontrolling Interest [Line Items] |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 46.50% |  |  |  |
Payment for acquisition of subsidiary's interest from the non-controlling interest | $ (60,000,000) | $ 0 | [1] | $ 0 | [1]
Net Deferred Tax Liability | (429,000,000) | (633,000,000) |  |  |
EID [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Payment for acquisition of subsidiary's interest from the non-controlling interest | $ (60,000,000) | $ 0 | [2] | $ 0 | [2]
$4.50 Series Preferred Stock [Member] | EID [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Preferred Stock, Shares Authorized | 23,000,000 | 23,000,000 |  |  |
Preferred Stock, Shares Issued | 1,673,000 | 1,673,000 |  |  |
Preferred Stock, Redemption Amount | $ 120 | $ 120 |  |  |
$3.50 Series Preferred Stock [Member] | EID [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Preferred Stock, Shares Authorized | 23,000,000 | 23,000,000 |  |  |
Preferred Stock, Shares Issued | 700,000 | 700,000 |  |  |
Preferred Stock, Redemption Amount | $ 102 | $ 102 |  |  |
Corteva [Member] | EID [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Ownership interest in an entity | 100.00% |  |  |  |
[1] | The cash flows for the years ended December 31, 2018 and 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2] | The cash flows for the year ended December 31, 2018 and 2019 includes cash flows of EID's ECP and Specialty Products Entities

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