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Quaterly Financial Data Quarterly Financial Data (Parentheticals) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Loss on Extinguishment of Debt |  |  | $ 0 | $ 0 | $ (13) | [1]
Net after-tax exchange (loss) gain |  |  | (88) | (161) | (84) |
Hedging Program [Member] |  |  |  |  |  |
Net after-tax exchange (loss) gain |  |  | $ 14 | 68 | (45) |
Hedging Program [Member] | Argentine peso devaluation [Member] |  |  |  |  |  |
Other Tax (Benefit) Expense |  | $ 33 |  |  |  |
Merger with Dow [Member] |  |  |  |  |  |
Business Combination, Fair Value Step-Up Of Acquired Inventory, Amount recognized in Cost of Goods sold |  |  |  |  | $ 272 |
Segment Reconciling Items [Member] |  |  |  |  |  |
Gain (Loss) on Disposition of Assets | [2],[3] |  |  | (388) |  |
Crop Protection [Member] | Segment Reconciling Items [Member] | Sale of JV [Member] |  |  |  |  |  |
Gain (Loss) on Disposition of Assets |  |  |  | $ (53) |  |
[1] | The cash flows for the year ended December 31, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2] | Includes a loss recorded in other income - net related to DAS's sale of a joint venture related to synergy actions.
[3] | The year ended December 31, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X that was in effect prior to recent amendments.

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