Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
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Natural gas and oil properties: | |||||
Properties subject to depletion | [1] | $ 10,019,744 | $ 9,624,725 | ||
Unproved properties | [1] | 946,416 | 943,246 | ||
Total | [1] | 10,966,160 | 10,567,971 | ||
Accumulated depletion and depreciation | [1] | (2,725,802) | (2,590,398) | ||
Natural gas and oil properties, successful efforts method, net | [1] | $ 8,240,358 | $ 7,977,573 | ||
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accumulated depreciation, depletion and amortization of oil and gas property carried under the successful effort method. Oil and gas property include, but not limited to, the entity's wells and related equipment and facilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Oil and Gas properties, gross, carried under the successful effort method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Oil and gas properties net of accumulated depreciation, depletion, amortization, impairment, and abandonment, carried under the successful effort method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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