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Inventories Narrative (Details) - Successor [Member] - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 4 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Dec. 31, 2017 | Dec. 31, 2017 | Sep. 01, 2017
Inventory [Line Items] |  |  |  |
Business Combination, Fair Value Step-Up Of Acquired Inventory, Amount recognized in Cost of Goods sold | $ (360) | $ (1,109) | $ (1,469) |
Merger with Dow [Member] |  |  |  |
Inventory [Line Items] |  |  |  |
Business Combination, Fair Value Step Up Of Acquired Inventory |  |  |  | $ 3,842
Business Combination, Fair Value Step-Up Of Acquired Inventory, Amount recognized in Cost of Goods sold |  |  | $ (1,434) |

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- Definition Business Combination, Fair Value Step Up Of Acquired Inventory + References No definition available. + Details
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- Definition Business Combination, Fair Value Step-Up Of Acquired Inventory, Amount recognized in Cost of Goods sold + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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