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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. 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse6000000060falsefalsefalsefalsefalse2truefalsefalse3200000032falsefalsefalsefalsefalse3truefalsefalse2300000023falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of net income (loss) attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 falsefalseLess: Net income attributable to noncontrolling interests12false0apc_ConsolidatedAdjustedEBITDAXapcfalsecreditdurationOperating results analyzed as income (loss) from continuing operations before income taxes, interest expense, exploration...falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse72260000007226falsetruefalsefalsefalse2truefalsefalse60330000006033falsetruefalsefalsefalse3truefalsefalse99410000009941falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryOperating results analyzed as income (loss) from continuing operations before income taxes, interest expense, exploration expense, depreciation, depletion and amortization (DD&A) expense, impairments, and unrealized (gains) losses on derivative instruments, net less net income attributable to noncontrolling interests.No authoritative reference available.falsefalseConsolidated Adjusted EBITDAX1In the fourth quarter of 2010, the Company revised the definition of Adjusted EBITDAX to exclude the impact of unrealized (gains) losses on derivative instruments, 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