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Related Parties Transactions with DowDuPont (Details) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2018 | Dec. 31, 2017 | Nov. 02, 2017
DowDuPont [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Accounts Payable, DowDuPont |  | $ 250 | $ 354 |
Successor [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 4,000
Distributions to DowDuPont | $ 0 | 2,481 |  |
Successor [Member] | DowDuPont [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Distributions to DowDuPont |  | $ 2,481 |  |

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