Asset Retirement Obligations (Narrative) (Detail) - Etame [Member] |
12 Months Ended |
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Dec. 31, 2014
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| Asset Retirement Obligation [Line Items] | |
| Number of new platforms, asset retirement obligations added | 2 |
| Number of new wells, asset retirement obligations added | 2 |
| X | ||||||||||
- Definition Asset Retirement Obligation [Line Items] No definition available.
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| X | ||||||||||
- Definition Number Of New Platforms, Asset Retirement Obligations Added No definition available.
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| X | ||||||||||
- Definition Number Of New Wells, Asset Retirement Obligations Added No definition available.
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| X | ||||||||||
- Details
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