| **Income Taxes (Details) - USD ($) $ in Millions** | 3 Months Ended | 9 Months Ended |
|----------------------------------------------------|----------------|----------------|
||
| **Income Tax Examination [Line Items]**            |           |           |   |   |
| Current                                            | $ 148          | $ (45)         | $ 213 | $ 64 |
| Deferred                                           | (285)          | 69             |   | (244) |
| Total Income Tax (Benefit) Provision               | $ (137)        | $ 24           | $ (486) | $ (180) |
| Effective Tax Rate                                 | 48.90%         | (9.30%)        | 39.50% | 30.40% |
| US                                                 |           |           |   |   |
| **Income Tax Examination [Line Items]**            |           |           |   |   |
| Income Tax Examination, Year under Examination     |           |           | 2013 |   |
| Equatorial Guinea                                  |           |           |   |   |
| **Income Tax Examination [Line Items]**            |           |           |   |   |
| Income Tax Examination, Year under Examination     |           |           | 2011 |   |
| Israel                                             |           |           |   |   |
| **Income Tax Examination [Line Items]**            |           |           |   |   |
| Income Tax Examination, Year under Examination     |           |           | 2011 |   |

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| - Definition
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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Tax year being audited in the income tax examination, in CCYY format.
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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