Supplemental Information on Oil and Gas Producing Activities (Unaudited) (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Capitalized Costs Relating to Oil and Gas Producing Activities | |||
| Proved properties | $ 11,859,817 | $ 12,705,672 | |
| Unproved properties | 1,368,854 | 1,767,600 | |
| Total | 13,228,671 | 14,473,272 | |
| Accumulated depletion and depreciation | (3,284,330) | (3,615,680) | |
| Net capitalized costs | 9,944,341 | 10,857,592 | |
| Costs Incurred in Certain Oil and Gas Activities | |||
| Proved property | $ 175,650 | ||
| Unproved property | 88,682 | 172,387 | 204,272 |
| Development costs | 1,104,336 | 1,164,800 | 897,287 |
| Exploration costs | 149,782 | 323,773 | 384,698 |
| Total costs incurred | 1,342,800 | 1,660,960 | 1,661,907 |
| Results of Operations for Oil and Gas Producing Activities | |||
| Revenues | 3,643,873 | 3,652,894 | 2,747,920 |
| Operating expenses: | |||
| Production expenses | 2,417,509 | 1,601,985 | 1,279,217 |
| Exploration expenses | 884 | 4,958 | 8,538 |
| Depletion and depreciation | 884,350 | 832,326 | 694,332 |
| Impairment of unproved properties | 1,300,444 | 549,437 | 159,598 |
| Results of operations before income tax expense (benefit) | (959,314) | 664,188 | 606,235 |
| Income tax expense | 224,511 | (156,350) | (228,096) |
| Results of operations | $ (734,803) | $ 507,838 | $ 378,139 |
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- Definition Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Net amount of capitalized costs relating to oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Cost incurred, including capitalized costs and costs charged to expense, in acquisition of oil and gas properties. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Depreciation, depletion and amortization, and valuation provisions (impairments) related to oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Exploration costs from oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Costs related to the impairment of oil and gas properties. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Income before income taxes for oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Income tax expense for oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The results of operations for oil and gas producing activities, excluding corporate overhead and interest costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Production (lifting) costs from oil and gas producing activities, including but not limited to lease operating expense, production and ad valorem taxes, and transportation expense. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total revenues from oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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