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Goodwill and Other Intangible Assets Goodwill by Segment (Details) - USD ($) $ in Millions | 5 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 01, 2019 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Line Items] |  |  |  |  |  |  |  |
Goodwill Beginning Balance | $ 10,193 |  | $ 10,179 |  | $ 10,229 |  | $ 10,193 |
Currency Translation Adjustment | (28) |  | 60 |  | 69 |  |  |
Other goodwill adjustments and acquisitions | 14 | [1] | (10) | [2] | (29) | [2] |  |
Goodwill Impairment Charge |  |  |  |  | 0 |  | 0 | $ 4,503
Realignment of segments | 0 |  |  |  |  |  |  |
Goodwill Ending Balance | 10,179 |  | 10,229 |  | 10,269 |  | 10,229 | 10,193
Agriculture [Member] |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Goodwill Beginning Balance | 10,193 |  | 0 |  | 0 |  | 10,193 |
Currency Translation Adjustment | (28) |  | 0 |  | 0 |  |  |
Other goodwill adjustments and acquisitions | 14 | [1] | 0 | [2] | 0 | [2] |  |
Goodwill Impairment Charge |  |  |  |  |  |  |  | 4,503
Realignment of segments | (10,179) |  |  |  |  |  |  |
Goodwill Ending Balance | 0 |  | 0 |  | 0 |  | 0 | 10,193
Crop Protection [Member] |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Goodwill Beginning Balance | 0 |  | 4,726 |  | 4,743 |  | 0 |
Currency Translation Adjustment | 0 |  | 28 |  | 31 |  |  |
Other goodwill adjustments and acquisitions | 0 | [1] | (11) | [2] | (29) | [2] |  |
Realignment of segments | 4,726 |  |  |  |  |  |  |
Goodwill Ending Balance | 4,726 |  | 4,743 |  | 4,745 |  | 4,743 | 0
Seed [Member] |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Goodwill Beginning Balance | 0 |  | 5,453 |  | 5,486 |  | 0 |
Currency Translation Adjustment | 0 |  | 32 |  | 38 |  |  |
Other goodwill adjustments and acquisitions | 0 | [1] | 1 | [2] | 0 | [2] |  |
Realignment of segments | 5,453 |  |  |  |  |  |  |
Goodwill Ending Balance | $ 5,453 |  | $ 5,486 |  | $ 5,524 |  | $ 5,486 | $ 0
[1] | Primarily consists of the acquisition of a distributor in Greece.
[2] | Primarily consists of the goodwill included in the sale of businesses in the crop protection segment.

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