| **Income Taxes (Details) (USD $)**                                                                                             | 12 Months Ended | 1 Months Ended  | 12 Months Ended |        |        |        | 12 Months Ended |        |             |
|--------------------------------------------------------------------------------------------------------------------------------|-----------------|-----------------|-----------------|--------|--------|--------|-----------------|--------|-------------|
||
| **Components of income (loss) before income taxes [Abstract]**                                                                 |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Domestic                                                                                                                       | $ 202,000,000   | $ 92,000,000    | $ (537,000,000) |   |   |   |            |   |        |   |   |   |   |   |   |
| Foreign                                                                                                                        | 1,142,000,000   | 1,264,000,000   | 1,039,000,000   |   |   |   |            |   |        |   |   |   |   |   |   |
| Income from Continuing Operations Before Income Taxes                                                                          | 1,344,000,000   | 1,356,000,000   | 502,000,000     |   |   |   |            |   |        |   |   |   |   |   |   |
| **Current Taxes [Abstract]**                                                                                                   |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Federal                                                                                                                        | 21,000,000      | 14,000,000      | 11,000,000      |   |   |   |            |   |        |   |   |   |   |   |   |
| State                                                                                                                          | 1,000,000       | 1,000,000       | 2,000,000       |   |   |   |            |   |        |   |   |   |   |   |   |
| Foreign                                                                                                                        | 144,000,000     | 143,000,000     | 155,000,000     |   |   |   |            |   |        |   |   |   |   |   |   |
| Total Current                                                                                                                  | 166,000,000     | 158,000,000     | 168,000,000     |   |   |   |            |   |        |   |   |   |   |   |   |
| **Deferred Taxes [Abstract]**                                                                                                  |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Federal                                                                                                                        | 96,000,000      | 60,000,000      | (130,000,000)   |   |   |   |            |   |        |   |   |   |   |   |   |
| State                                                                                                                          | 1,000,000       | 1,000,000       | (3,000,000)     |   |   |   |            |   |        |   |   |   |   |   |   |
| Foreign                                                                                                                        | 174,000,000     | 172,000,000     | 55,000,000      |   |   |   |            |   |        |   |   |   |   |   |   |
| Total Deferred                                                                                                                 | 271,000,000     | 233,000,000     | (78,000,000)    |   |   |   |            |   |        |   |   |   |   |   |   |
| Total Income Tax Provision                                                                                                     | 437,000,000     | 391,000,000     | 90,000,000      |   |   |   |            |   |        |   |   |   |   |   |   |
| Effective Tax Rate (in hundredths)                                                                                             | 32.50%          | 28.80%          | 17.90%          |   |   |   |            |   |        |   |   |   |   |   |   |
| **Federal statutory tax rate reconciliation [Abstract]**                                                                       |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Federal Statutory Rate (in hundredths)                                                                                         | 35.00%          | 35.00%          | 35.00%          |   |   |   |            |   |        |   |   |   |   |   |   |
| **Effect of**                                                                                                                  |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Earnings of Equity Method Investees (in hundredths)                                                                            | (5.30%)         | (4.90%)         | (13.30%)        |   |   |   |            |   |        |   |   |   |   |   |   |
| State Taxes, Net of Federal Benefit (in hundredths)                                                                            | 0.10%           | 0.20%           | (0.10%)         |   |   |   |            |   |        |   |   |   |   |   |   |
| Difference Between US and Foreign Rates (in hundredths)                                                                        | (6.30%)         | (4.90%)         | (7.00%)         |   |   |   |            |   |        |   |   |   |   |   |   |
| Foreign Exploration Loss (in hundredths)                                                                                       | 2.70%           | (3.80%)         | (4.20%)         |   |   |   |            |   |        |   |   |   |   |   |   |
| Change in Valuation Allowance (in hundredths)                                                                                  | 3.80%           | 4.30%           | 6.60%           |   |   |   |            |   |        |   |   |   |   |   |   |
| Oil Profits Tax - Israel (in hundredths)                                                                                       | 0.30%           | 0.90%           | 2.60%           |   |   |   |            |   |        |   |   |   |   |   |   |
| Tax Contingency (in hundredths)                                                                                                | 0.40%           | 1.80%           | 0.00%           |   |   |   |            |   |        |   |   |   |   |   |   |
| Other, Net (in hundredths)                                                                                                     | 1.80%           | 0.20%           | (1.70%)         |   |   |   |            |   |        |   |   |   |   |   |   |
| Effective Rate (in hundredths)                                                                                                 | 32.50%          | 28.80%          | 17.90%          |   |   |   |            |   |        |   |   |   |   |   |   |
| **Deferred Tax Assets [Abstract]**                                                                                             |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Loss Carryforwards                                                                                                             | 174,000,000     | 235,000,000     |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Employee Compensation & Benefits                                                                                           | 143,000,000     | 134,000,000     |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Deferred Tax Assets, Tax Credit Carryforwards, Foreign                                                                         | 31,000,000      | 38,000,000      |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Other                                                                                                                          | 56,000,000      | 81,000,000      |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Total Deferred Tax Assets                                                                                                      | 404,000,000     | 488,000,000     |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Deferred Tax Assets, Valuation Allowance                                                                                       | 168,000,000     | 119,000,000     |            |   |   |   |            |   | 135,000,000 | 81,000,000 | 65,000,000 | 31,000,000 | 38,000,000 | 2,000,000 | 0 |
| Valuation Allowance Deferred Tax Asset Reversal                                                                                |            |            |            |   |   |   |            |   |        |   |   | 27,000,000 | 57,000,000 |   |   |
| Valuation Allowance, Deferred Tax Asset, Recorded During the Year                                                              |            |            |            |   |   |   |            |   |        |   |   | (20,000,000) | (38,000,000) |   |   |
| Net Deferred Tax Assets                                                                                                        | 236,000,000     | 369,000,000     |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Deferred Tax Liability Release                                                                                                 |            | 12,000,000      |            |   |   |   |            |   |        |   |   |   |   |   |   |
| **Deferred Tax Liabilities [Abstract]**                                                                                        |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Property, Plant and Equipment, Principally Due to Differences in Depreciation, Amortization, Lease Impairment and Abandonments | (2,615,000,000) | (2,481,000,000) |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Total Deferred Tax Liability                                                                                                   | (2,615,000,000) | (2,481,000,000) |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Net Deferred Tax Liability                                                                                                     | (2,379,000,000) | (2,112,000,000) |            |   |   |   |            |   |        |   |   |   |   |   |   |
| **Deferred Tax Asset and Liability Classification [Abstract]**                                                                 |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Deferred Income Tax Asset - Current                                                                                            | 62,000,000      | 106,000,000     |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Deferred Income Tax Liability - Noncurrent                                                                                     | (2,441,000,000) | (2,218,000,000) |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Net Deferred Tax Liability                                                                                                     | (2,379,000,000) | (2,112,000,000) |            |   |   |   |            |   |        |   |   |   |   |   |   |
| **Change in Statutory Federal Tax Rate [Abstract]**                                                                            |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Statutory Federal Corporate Tax Rate Current Year                                                                              |            |            |            |   |   | 25.00% |            |   |        |   |   |   |   |   |   |
| Statutory Federal Corporate Tax Rate Future Year                                                                               |            |            |            |   |   | 26.50% |            |   |        |   |   |   |   |   |   |
| Impact of Statutory Rate Increase on Deferred Taxes                                                                            | 12,000,000      |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| **Accumulated Undistributed Earnings of Foreign Subsidiaries [Abstract]**                                                      |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Accumulated undistributed earnings of foreign subsidiaries                                                                     | 3,700,000,000   |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Estimated future US taxes on the eventual remittance of accumulated undistributed foreign subsidiary earnings                  | $ 700,000,000   |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| **Earliest Year Open to Examination [Abstract]**                                                                               |            |            |            |   |   |   |            |   |        |   |   |   |   |   |   |
| Income Tax Examination, Year under Examination                                                                                 |            |            |            | 2010   | 2008   |   | 2009            | 2010   |        |   |   |   |   |   |   |

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.
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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
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Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.
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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
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Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed after one year (or the normal operating cycle, if longer).
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.
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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.
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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).
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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.
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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.
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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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other deductions.
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity in earnings (loss) of unconsolidated subsidiaries exempt from income taxes.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tax year being audited in the income tax examination, in CCYY format.
+ References
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.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset.
+ References
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