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Dispositions Dispositions (Net Income (Loss) from Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016 | Nov. 16, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax |  |  | $ 38 | $ (177) |  |
Net (loss) income from discontinued operations | $ 9 | $ (181) | 47 | (185) |  |
Other assets | 1,957 |  | 1,957 |  | $ 1,956 |
TF Holdings Limited | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Costs of Goods Sold |  |  | 0 |  |  |
Disposal Group, Including Discontinued Operation, Depreciation and Amortization |  |  | 0 |  |  |
Disposal Group, Including Discontinued Operation, Interest Expense |  |  | 0 |  |  |
Contingent consideration asset |  |  |  |  |  | $ 120
Other assets | 55 |  | 55 |  |  |
Discontinued Operation, Change in Contingent Receivable | 6 |  | 42 |  |  |
Tenke Fungurume [Member] | Discontinued Operations, Held-for-sale [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Revenue | 4 | 272 | 13 | 558 |  |
Disposal Group, Including Discontinued Operation, Costs of Goods Sold | 0 | 256 |  | 482 |  |
Disposal Group, Including Discontinued Operation, Depreciation and Amortization | 0 | 20 |  | 80 |  |
Disposal Group, Including Discontinued Operation, Interest Expense | 0 | 11 |  | 21 |  |
Disposal Group, Including Discontinued Operation, Other Expense | 0 | 5 | 0 | 6 |  |
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax | 4 | (20) | 13 | (31) |  |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax | 6 | (177) | 38 | (177) |  |
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax | 10 | (197) | 51 | (208) |  |
Discontinued Operation, Tax Effect of Discontinued Operation | (1) | 16 | (4) | 23 |  |
Net (loss) income from discontinued operations | 9 | (181) | 47 | (185) |  |
Consolidation, Eliminations [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Net (loss) income from discontinued operations | 0 | (11) | 0 | (21) |  |
Consolidation, Eliminations [Member] | TF Holdings Limited | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Revenue | $ (4) | $ 41 | $ (13) | $ 73 |  |

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