Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | |||||||||||||
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Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Net Operating Revenues | ||||||||||||||
| Crude Oil and Condensate | $ 4,317,341 | $ 4,934,562 | $ 9,742,480 | |||||||||||
| Natural Gas Liquids | 437,250 | 407,658 | 934,051 | |||||||||||
| Natural Gas | 742,152 | 1,061,038 | 1,916,386 | |||||||||||
| Gains (Losses) on Mark-to-Market Commodity Derivative Contracts | (99,608) | 61,924 | 834,273 | |||||||||||
| Gathering, Processing and Marketing | 1,966,259 | 2,253,135 | 4,046,316 | |||||||||||
| Gains (Losses) on Asset Dispositions, Net | 205,835 | (8,798) | 507,590 | |||||||||||
| Other, Net | 81,403 | 47,909 | 54,244 | |||||||||||
| Total | 7,650,632 | [1] | 8,757,428 | [2] | 18,035,340 | [3] | ||||||||
| Operating Expenses | ||||||||||||||
| Lease and Well | 927,452 | 1,182,282 | 1,416,413 | |||||||||||
| Transportation Costs | 764,106 | 849,319 | 972,176 | |||||||||||
| Gathering and Processing Costs | 122,901 | 146,156 | 145,800 | |||||||||||
| Exploration Costs | 124,953 | 149,494 | 184,388 | |||||||||||
| Dry Hole Costs | [4] | 10,657 | 14,746 | 48,490 | ||||||||||
| Impairments | 620,267 | 6,613,546 | 743,575 | |||||||||||
| Marketing Costs | 2,007,635 | 2,385,982 | 4,126,060 | |||||||||||
| Depreciation, Depletion and Amortization | 3,553,417 | 3,313,644 | 3,997,041 | |||||||||||
| General and Administrative | 394,815 | 366,594 | 402,010 | |||||||||||
| Taxes Other Than Income | 349,710 | 421,744 | 757,564 | |||||||||||
| Total | 8,875,913 | 15,443,507 | 12,793,517 | |||||||||||
| Operating Income (Loss) | (1,225,281) | (6,686,079) | 5,241,823 | |||||||||||
| Other (Expense) Income, Net | (50,543) | 1,916 | (45,050) | |||||||||||
| Income (Loss) Before Interest Expense and Income Taxes | (1,275,824) | (6,684,163) | 5,196,773 | |||||||||||
| Interest Expense | ||||||||||||||
| Incurred | 313,341 | 279,234 | 258,628 | |||||||||||
| Capitalized | (31,660) | (41,841) | (57,170) | |||||||||||
| Net Interest Expense | 281,681 | 237,393 | 201,458 | |||||||||||
| Income (Loss) Before Income Taxes | (1,557,505) | (6,921,556) | 4,995,315 | |||||||||||
| Income Tax (Benefit) Provision | (460,819) | (2,397,041) | 2,079,828 | |||||||||||
| Net Income (Loss) | $ (1,096,686) | $ (4,524,515) | $ 2,915,487 | |||||||||||
| Net Income (Loss) Per Share | ||||||||||||||
| Basic (in dollars per share) | $ (1.98) | $ (8.29) | $ 5.36 | |||||||||||
| Diluted (in dollars per share) | (1.98) | (8.29) | 5.32 | |||||||||||
| Dividends Declared per Common Share | $ 0.670 | $ 0.670 | $ 0.585 | |||||||||||
| Average Number of Common Shares [Abstract] | ||||||||||||||
| Basic (in shares) | 553,384 | 545,697 | 543,443 | |||||||||||
| Diluted (in shares) | 553,384 | 545,697 | 548,539 | |||||||||||
| Statement Of Comprehensive Income [Abstract] | ||||||||||||||
| Net Income (Loss) | $ (1,096,686) | $ (4,524,515) | $ 2,915,487 | |||||||||||
| Other Comprehensive Income (Loss) | ||||||||||||||
| Foreign Currency Translation Adjustments | 12,097 | (11,517) | (437,728) | |||||||||||
| Other, Net of Tax | 2,231 | 1,235 | (1,162) | |||||||||||
| Other Comprehensive Income (Loss) | 14,328 | (10,282) | (438,890) | |||||||||||
| Comprehensive Income (Loss) | $ (1,082,358) | $ (4,534,797) | $ 2,476,597 | |||||||||||
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- References No definition available.
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- Definition Operating and maintenance expenses and administrative expenses associated with operating gathering and processing assets. No definition available.
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- Definition Revenues related to sales of third-party natural gas, crude oil and condensate and natural gas liquids, and gathering fees associated with gathering third-party natural gas. No definition available.
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- Definition Sum of operating profit and nonoperating income (expense) before income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. No definition available.
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- Definition Income Before Interest Expense and Income Taxes. No definition available.
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- Definition Costs to operate and maintain natural gas and crude oil wells, cost of workovers and lease and well administrative expenses. No definition available.
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- Definition Costs of purchasing third-party natural gas and crude oil and the related transportation costs. No definition available.
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- Definition Revenue from the sale of natural gas liquids. No definition available.
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- Definition The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. No definition available.
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- Definition Other Comprehensive Income including defined benefit plans adjustments before tax portion attributable to parent and the income tax related to defined benefit pension and postretirement plans. No definition available.
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- Definition The total amount of net operating revenues, not previously categorized. No definition available.
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- Definition Comprehensive Income (Loss) No definition available.
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- Definition Taxes other than income taxes, if not included elsewhere, could include, property tax or other selling and distribution-related taxes. No definition available.
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- Definition Costs associated with the delivery of hydrocarbon products from the lease to a downstream point of sale. No definition available.
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of gain (loss) on sale or disposal of assets utilized in financial service operations. No definition available.
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of interest capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Revenue from natural gas production during the reporting period. Natural gas consists largely of the hydrocarbon methane, and is found in underground formations either by itself or with crude oil. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Revenue from sale of residue oil and condensate, which normally exists in the reservoir as gas but condenses out as a liquid during production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Dry hole costs from oil and gas producing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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