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Stockholders' Equity Preferred Stock (Details) - EID [Member] - USD ($) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019
$4.50 Series Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Authorized | 23,000,000 | 23,000,000 | 23,000,000
Preferred Stock, Shares Issued | 1,673,000 | 1,673,000 | 1,673,000
Preferred Stock, Redemption Amount | $ 120 | $ 120 | $ 120
$3.50 Series Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Authorized | 23,000,000 | 23,000,000 | 23,000,000
Preferred Stock, Shares Issued | 700,000 | 700,000 | 700,000
Preferred Stock, Redemption Amount | $ 102 | $ 102 | $ 102
Corteva [Member] |  |  |
Class of Stock [Line Items] |  |  |
Ownership interest in an entity | 100.00% |  |

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- Definition The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer. + 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 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21564-112644 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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