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Supplementary Information Foreign Currency Exchange Gain (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |
Pre-tax exchange (losses) gains - net | [1] | $ (97) | $ (102) | $ (234) | $ (242)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit |  | (7) | 15 | 30 | 39
Foreign Currency Transaction (Loss) Gain After Tax |  | (104) | (87) | (204) | (203)
Corteva [Member] |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |
Foreign Currency Transaction (Loss) Gain After Tax |  | (104) | (87) | (203) | (203)
EIDP |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |
Foreign Currency Transaction (Loss) Gain After Tax |  | 0 | 0 | 1 | 0
Subsidiary Monetary Position |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |
Pre-tax exchange (losses) gains - net |  | (156) | (104) | (199) | (182)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit |  | 5 | 19 | 23 | 27
Foreign Currency Transaction (Loss) Gain After Tax |  | (151) | (85) | (176) | (155)
Hedging Program [Member] |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |
Pre-tax exchange (losses) gains - net |  | 59 | 2 | (35) | (60)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit |  | (12) | (4) | 7 | 12
Foreign Currency Transaction (Loss) Gain After Tax |  | $ 47 | $ (2) | $ (28) | $ (48)
[1] | Includes net pre-tax exchange gains (losses) of $(26) million and $(54) million associated with impacts from the devaluation of the Argentine Peso for the three and nine months ended September 30, 2024, respectively, and $(83) million and $(150) million for the three and nine months ended September 30, 2023, respectively.

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- Definition Amount, after tax, of realized and unrealized gain (loss) from foreign currency transaction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480767/946-205-45-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 45 -Paragraph 38 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480228/946-830-45-38 + Details
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