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DISPOSITIONS AND ACQUISITIONS (Net Income (Loss) from Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on disposal |  |  |  |  |  |  |  |  | $ 57 | $ (198) | $ 0
Net income (loss) from discontinued operations | $ 16 | $ 3 | $ 9 | $ 38 | $ (2) | $ (6) | $ (181) | $ (4) | 66 | (193) | 91
Other assets | 2,270 |  |  |  | 1,956 |  |  |  | 2,270 | 1,956 |
Eliminations |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from discontinued operations |  |  |  |  |  |  |  |  | 0 | (39) | 0
TF Holdings Limited | Disposed of by Sale, Discontinued Operations |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 13 | 959 | 1,270
Production and delivery costs |  |  |  |  |  |  |  |  | 0 | 833 | 852
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 0 | 80 | 257
Interest expense allocated from parentc |  |  |  |  |  |  |  |  | 0 | 39 | 28
Other costs and expenses, net |  |  |  |  |  |  |  |  | 0 | 10 | 26
Income (loss) before income taxes and net gain (loss) on disposal |  |  |  |  |  |  |  |  | 13 | (3) | 107
Net gain (loss) on disposal |  |  |  |  |  |  |  |  | 57 | (198) | 0
Net income (loss) before income taxes |  |  |  |  |  |  |  |  | 70 | (201) | 107
(Provision for) benefit from income taxes |  |  |  |  |  |  |  |  | (4) | 8 | (16)
Net income (loss) from discontinued operations |  |  |  |  |  |  |  |  | 66 | (193) | 91
Other assets | $ 74 |  |  |  | $ 13 |  |  |  | 74 | 13 |
TF Holdings Limited | Disposed of by Sale, Discontinued Operations | Eliminations |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (13) | $ 157 | $ 114

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