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Divestitures and Other Transactions Divestitures and Other Transactions - PChem Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 8 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2015 | Aug. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Jul. 01, 2015 | May 12, 2015
Predecessor [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Separation Related Transaction Costs |  |  | $ 35 | $ 306 |  |  |
Dividend received from Chemours | $ 3,923 |  |  |  |  |  |
Cash distribution received from Chemours | 3,416 |  |  |  |  |  |
Net assets transferred at spin-off |  |  |  |  |  | $ 431 |
Predecessor [Member] | Performance Chemicals [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Restructuring and Related Cost, Incurred Cost |  | $ 0 | 0 | 59 |  |  |
Predecessor [Member] | Chemours' Debt [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Proceeds from Issuance of Debt | $ 4,000 |  |  |  |  |  |
Predecessor [Member] | Senior Notes 7 Percent Due 2025 [Member] | Chemours Notes Received [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Senior Notes Payable |  |  |  |  |  |  | $ 507
Debt Instrument, Interest Rate |  |  |  |  |  |  | 7.00%
Predecessor [Member] | Discontinued Operations [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Separation Related Transaction Costs |  |  | $ 35 | 260 |  |  |
Pension & OPEB, Net Periodic Benefit Cost, Gain Due to Curtailment |  |  |  | 281 |  |  |
Predecessor [Member] | Discontinued Operations [Member] | PFOA Matters: Multi-District Litigation [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Gain (Loss) Related to Litigation Settlement |  | 335 |  |  |  |  |
Gain (Loss) Related To Litigation Settlement, Net Of Tax |  | $ 214 |  |  |  |  |
Predecessor [Member] | Continuing Operations [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Separation Related Transaction Costs |  |  |  | 26 |  |  |
Predecessor [Member] | Continuing Operations [Member] | Loss on extinguishment of debt [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Separation Related Transaction Costs |  |  |  | $ 20 |  |  |
Accounts and Notes Receivable [Member] | Successor [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Indemnification Assets |  |  |  |  | $ 80 |  |
Other Assets [Member] | Successor [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Indemnification Assets |  |  |  |  | 340 |  |
Accrued and Other Current Liabilities [Member] | Successor [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Indemnification Liabilities |  |  |  |  | 80 |  |
Other Noncurrent Obligations [Member] | Successor [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Indemnification Liabilities |  |  |  |  | $ 340 |  |

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