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Other Intangible Assets (Schedule of Intangible Assets as a Result of Business Combination) (Details) - Merger with Dow [Domain] $ in Millions | Aug. 31, 2017 USD ($)
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Finite-Lived Intangible Assets [Line Items] |  |
Total Intangible Assets as a result of Merger | $ 27,844 | [1]
Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Total Intangible Assets as a result of Merger | 27,844 |
Finite-lived intangible assets as a result of the Merger | 15,355 |
In Process Research and Development [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets as a result of the Merger | 655 |
Pioneer Germplasm [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets as a result of the Merger | 6,773 |
Trademarks and Trade Names [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets as a result of the Merger | 5,061 |
Customer-Related Intangible Assets [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets as a result of the Merger | $ 9,434 |
Finite-lived intangible asset, weighted average amortization period, years | 18 years |
Developed Technology Rights [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets as a result of the Merger | $ 4,124 |
Finite-lived intangible asset, weighted average amortization period, years | 12 years |
Trademarks and Trade Names [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets as a result of the Merger | $ 1,073 |
Finite-lived intangible asset, weighted average amortization period, years | 12 years |
Microbial Cell Factories [Member] | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets as a result of the Merger | $ 430 |
Finite-lived intangible asset, weighted average amortization period, years | 23 years |
Other | Successor |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets as a result of the Merger | $ 294 |
Finite-lived intangible asset, weighted average amortization period, years | 15 years |
[1] | See Note 11 for additional information.

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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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