Oil and Gas Exploration and Production Industries Disclosures, Results Of Operations (Details) - USD ($) $ in Thousands |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items] | ||||||||
| Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues | [1] | $ 5,496,743 | $ 6,403,258 | $ 12,592,917 | ||||
| Other | [1] | 81,403 | 47,909 | 54,244 | ||||
| Total | [1] | 5,578,146 | 6,451,167 | 12,647,161 | ||||
| Exploration Costs | [1] | 124,953 | 149,494 | 184,388 | ||||
| Dry Hole Costs | [1] | 10,657 | 14,746 | 48,490 | ||||
| Transportation Costs | [1] | 764,106 | 849,319 | 972,176 | ||||
| Production Costs | [1] | 1,254,013 | 1,581,131 | 2,150,027 | ||||
| Impairments | [1] | 620,267 | 6,613,546 | 743,575 | ||||
| Depreciation, Depletion and Amortization | [1] | 3,437,284 | 3,190,443 | 3,881,720 | ||||
| Income (Loss) Before Income Taxes | [1] | (633,134) | (5,947,512) | 4,666,785 | ||||
| Income Tax Provision (Benefit) | [1] | (226,413) | (2,086,555) | 1,821,104 | ||||
| Results of Operations | [1] | (406,721) | (3,860,957) | 2,845,681 | ||||
| United States | ||||||||
| Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items] | ||||||||
| Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues | [1] | 5,177,989 | 5,962,753 | 11,771,777 | ||||
| Other | [1] | 81,386 | 47,464 | 49,950 | ||||
| Total | [1] | 5,259,375 | 6,010,217 | 11,821,727 | ||||
| Exploration Costs | [1] | 115,990 | 139,753 | 162,434 | ||||
| Dry Hole Costs | [1] | 10,529 | 956 | 25,408 | ||||
| Transportation Costs | [1] | 753,791 | 838,428 | 957,522 | ||||
| Production Costs | [1] | 1,163,827 | 1,486,189 | 1,940,074 | ||||
| Impairments | [1] | 611,297 | 6,402,908 | 331,792 | ||||
| Depreciation, Depletion and Amortization | [1] | 3,249,792 | 3,017,386 | 3,571,313 | ||||
| Income (Loss) Before Income Taxes | [1] | (645,851) | (5,875,403) | 4,833,184 | ||||
| Income Tax Provision (Benefit) | [1] | (230,377) | (2,128,183) | 1,722,914 | ||||
| Results of Operations | [1] | (415,474) | (3,747,220) | 3,110,270 | ||||
| Trinidad | ||||||||
| Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items] | ||||||||
| Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues | [1] | 243,708 | 381,761 | 512,675 | ||||
| Other | [1] | (8) | (3) | 37 | ||||
| Total | [1] | 243,700 | 381,758 | 512,712 | ||||
| Exploration Costs | [1] | 2,647 | 2,071 | 2,185 | ||||
| Dry Hole Costs | [1] | 0 | 5,635 | 0 | ||||
| Transportation Costs | [1] | 1,181 | 1,290 | 617 | ||||
| Production Costs | [1] | 27,113 | 28,862 | 38,301 | ||||
| Impairments | [1] | 7,773 | 0 | 0 | ||||
| Depreciation, Depletion and Amortization | [1] | 145,440 | 154,588 | 188,250 | ||||
| Income (Loss) Before Income Taxes | [1] | 59,546 | 189,312 | 283,359 | ||||
| Income Tax Provision (Benefit) | [1] | 5,526 | 43,739 | 74,588 | ||||
| Results of Operations | [1] | 54,020 | 145,573 | 208,771 | ||||
| Other International | ||||||||
| Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items] | ||||||||
| Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues | [1],[2] | 75,046 | 58,744 | 308,465 | ||||
| Other | [1],[2] | 25 | 448 | 4,257 | ||||
| Total | [1],[2] | 75,071 | 59,192 | 312,722 | ||||
| Exploration Costs | [1],[2] | 6,316 | 7,670 | 19,769 | ||||
| Dry Hole Costs | [1],[2] | 128 | 8,155 | 23,082 | ||||
| Transportation Costs | [1],[2] | 9,134 | 9,601 | 14,037 | ||||
| Production Costs | [1],[2] | 63,073 | 66,080 | 171,652 | ||||
| Impairments | [1],[2] | 1,197 | 210,638 | 411,783 | ||||
| Depreciation, Depletion and Amortization | [1],[2] | 42,052 | 18,469 | 122,157 | ||||
| Income (Loss) Before Income Taxes | [1],[2] | (46,829) | (261,421) | (449,758) | ||||
| Income Tax Provision (Benefit) | [1],[2] | (1,562) | (2,111) | 23,602 | ||||
| Results of Operations | [1],[2] | $ (45,267) | $ (259,310) | $ (473,360) | ||||
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