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Stockholders' Equity Preferred Stock (Details) - EIDP - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Authorized | 23,000,000 |  |  | 23,000,000 |  |  | 23,000,000 | 23,000,000 | 23,000,000
$4.50 Series Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued | 1,673,000 |  |  | 1,673,000 |  |  | 1,673,000 | 1,673,000 | 1,673,000
Preferred Stock, Redemption Amount | $ 120 |  |  | $ 120 |  |  | $ 120 | $ 120 | $ 120
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50 | $ 4.50
$3.50 Series Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued | 700,000 |  |  | 700,000 |  |  | 700,000 | 700,000 | 700,000
Preferred Stock, Redemption Amount | $ 102 |  |  | $ 102 |  |  | $ 102 | $ 102 | $ 102
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50 | $ 3.50
Corteva [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Ownership of outstanding common shares in EIDP |  |  |  |  |  |  | 100.00% |  |

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