| **Income Taxes (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 6 Months Ended |
|---------------------------------------------------------------------------|----------------|----------------|
||
| **Income Tax Disclosure [Abstract]**                                      |           |           |   |   |
| Current                                                                   | $ 34           | $ 71           | $ 94 | $ 108 |
| Deferred                                                                  | 7              | 57             | 24 | 106 |
| Total Income Tax Provision                                                | $ 41           | $ 128          | $ 118 | $ 214 |
| Effective Tax Rate                                                        | 17.60%         | 26.40%         | 23.10% | 26.60% |
| US                                                                        |           |           |   |   |
| **Income Tax Examination [Line Items]**                                   |           |           |   |   |
| Income Tax Examination, Year under Examination                            |           |           | 2010 |   |
| Equatorial Guinea                                                         |           |           |   |   |
| **Income Tax Examination [Line Items]**                                   |           |           |   |   |
| Income Tax Examination, Year under Examination                            |           |           | 2008 |   |
| Israel                                                                    |           |           |   |   |
| **Income Tax Examination [Line Items]**                                   |           |           |   |   |
| Income Tax Examination, Year under Examination                            |           |           | 2009 |   |

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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
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| - Definition
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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No definition available.
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| - Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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