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Restructuring and Asset Related Charges DowDuPont Cost Synergy Program (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 37 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and Asset related charges, net |  | $ 49 | $ 46 | $ 298 | $ 167 |
DowDuPont Cost Synergy Program [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance |  |  |  | 69 |  |
Payments for Restructuring |  |  |  | (22) |  |
Restructuring Reserve, Ending Balance |  | 45 |  | 45 |  | $ 45
Restructuring and Asset related charges, net |  | 9 | (8) | 6 | 114 | 851
DowDuPont Cost Synergy Program [Member] | Severance and Related Benefit Costs |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance |  |  |  | 29 |  |
Payments for Restructuring |  |  |  | (16) |  |
Restructuring Reserve, Ending Balance |  | 13 |  | 13 |  | 13
Restructuring and Asset related charges, net |  | 0 | 0 | 0 | 14 | 319
DowDuPont Cost Synergy Program [Member] | Costs Associated with Exit and Disposal Activities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Beginning Balance | [1] |  |  | 40 |  |
Payments for Restructuring | [1] |  |  | (8) |  |
Restructuring Reserve, Ending Balance | [1] | 32 |  | 32 |  | 32
Restructuring and Asset related charges, net |  | 0 | 0 | 0 | 69 | 193
DowDuPont Cost Synergy Program [Member] | Asset Related Charges [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and Asset related charges, net |  | 9 | (8) | 6 | 31 | $ 339
DowDuPont Cost Synergy Program [Member] | Seed [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and Asset related charges, net |  | (1) | (7) | (7) | 66 |
DowDuPont Cost Synergy Program [Member] | Crop Protection [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and Asset related charges, net |  | 10 | (1) | 13 | 28 |
DowDuPont Cost Synergy Program [Member] | Corporate |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and Asset related charges, net |  | $ 0 | $ 0 | $ 0 | $ 20 |
[1] | Relates primarily to contract terminations charges.

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 + Details
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