Supplemental Information on Oil and Gas Exploration and Production Activities (Unaudited) - Capitalized Costs Related to Oil and Gas Producing Activities (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Extractive Industries [Abstract] | ||
| Proved properties | $ 9,359,866 | $ 8,909,069 |
| Unproved properties | 1,457,043 | 1,686,666 |
| Capitalized costs, gross | 10,816,909 | 10,595,735 |
| Accumulated depreciation, depletion, amortization and impairment | (8,778,759) | (7,191,957) |
| Net capitalized costs | $ 2,038,150 | $ 3,403,778 |
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- References No definition available.
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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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- 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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