Oil and Gas Exploration and Production Industries Disclosures, Average Sales Price (Details) - $ / bbl |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Average Sales Price and Production Costs Per Unit of Production [Line Items] | |||||
| Production costs per barrel of oil equivalent | 4.48 | 5.85 | 6.46 | ||
| United States | |||||
| Average Sales Price and Production Costs Per Unit of Production [Line Items] | |||||
| Production costs per barrel of oil equivalent | 4.58 | 5.81 | 6.44 | ||
| Trinidad | |||||
| Average Sales Price and Production Costs Per Unit of Production [Line Items] | |||||
| Production costs per barrel of oil equivalent | 1.23 | 1.29 | 1.34 | ||
| Other International | |||||
| Average Sales Price and Production Costs Per Unit of Production [Line Items] | |||||
| Production costs per barrel of oil equivalent | [1] | 22.43 | 33.78 | 24.60 | |
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