Accounting Policies [Abstract] Schedule of Non-cash Impairments of Proved and Unproved Property and Equipment Schedule of Non-cash Impairments of Proved and Unproved Property and Equipment [Table Text Block] Schedule of Non-cash Impairments of Proved and Unproved Property and Equipment [Table Text Block] Equity [Abstract] Options and restricted stock, anti-dilutive Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Dividends, Common stock Payments of Ordinary Dividends, Common Stock Common stock share purchase, shares Stock Repurchase Program, Number of Shares Authorized to be Repurchased Common stock share repurchase, shares Treasury Stock, Shares, Acquired Common stock share repurchase, per share Treasury Stock Acquired, Average Cost Per Share Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset retirement obligation at the beginning of period Asset Retirement Obligation Liabilities incurred Asset Retirement Obligation, Liabilities Incurred Liabilities acquired Asset Retirement Obligation, Liabilities Acquired Asset Retirement Obligation, Liabilities Acquired Liabilities divested Asset Retirement Obligation Liabilities Divested Asset Retirement Obligation Liabilities Divested Liabilities settled Asset Retirement Obligation, Liabilities Settled Accretion expense Accretion Expense, Including Asset Retirement Obligations Revisions in estimated liabilities Asset Retirement Obligation, Revision of Estimate Asset retirement obligation at the end of period Less current portion Asset Retirement Obligation, Current Asset retirement obligation, long-term Asset Retirement Obligations, Noncurrent Business Combinations [Abstract] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Wheatstone LNG [Member] Wheatstone Lng [Member] Wheatstone Lng [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Yara Pilbara Holdings Pty Limited [Member] Yara Pilbara Holdings Pty Limited [Member] Yara Pilbara Holdings Pty Limited [Member] Kitimat LNG [Member] Kitimat Lng [Member] Kitimat LNG. Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Upstream Assets [Member] Upstream Assets [Member] Upstream Assets [Member] LNG Assets [Member] Lng Assets [Member] Lng Assets [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Canada [Member] CANADA Australia [Member] AUSTRALIA Impaired Assets to be Disposed of by Method Other than Sale by Type [Axis] Impaired Assets to be Disposed of by Method Other than Sale by Type [Axis] Impaired Assets to be Disposed of by Method Other than Sale, Asset Name [Domain] Impaired Assets to be Disposed of by Method Other than Sale, Asset Name [Domain] Woodside Sale [Member] Woodside Sale [Member] Woodside Sale [Member] Consortium Sale [Member] Consortium Sale [Member] Consortium Sale [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Oil and gas property and equipment [Member] Oil and Gas Properties [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Percentage of ownership Equity Method Investment, Ownership Percentage Proceeds from Sale of Equity Method Investments Proceeds from Sale of Equity Method Investments Impairment of equity method investment Equity Method Investment, Other than Temporary Impairment Proceeds from sale of Kitimat LNG project Proceeds from Divestiture of Interest in Joint Venture Impairments Asset Impairment Charges Proceeds from divestitures Proceeds from Divestiture of Businesses Gain (loss) on disposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Leasehold and property acquisitions Payments to Acquire Oil and Gas Property Transaction, reorganization, and separation Restructuring Charges Segment Reporting [Abstract] Business Segment Information Segment Reporting Disclosure [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Oil and Gas Property Industry Specific Policies, Oil and Gas [Policy Text Block] New Pronouncements Issued But Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Document And Entity Information [Abstract] Document and Entity Information. Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Accounting Changes and Error Corrections [Abstract] Schedule of Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Statement [Table] Statement [Table] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Domain] Adjustments for Change in Accounting Principle [Domain] Change from Full Cost Method to Successful Efforts Method [Member] Change from Full Cost Method to Successful Efforts Method [Member] Change from Full Cost Method to Successful Efforts Method [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Under Full Cost [Member] Scenario, Previously Reported [Member] Changes [Member] Restatement Adjustment [Member] Statement [Line Items] Statement [Line Items] Net loss including noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Gain on divestitures Gain (Loss) on Disposition of Business Exploratory dry hole expense and unproved leasehold impairments Results of Operations, Dry Hole Costs Depreciation, depletion, and amortization Depreciation, Depletion and Amortization Deferred income tax benefit Deferred Income Tax Expense (Benefit) Other Operating Activities, Cash Flow Statement Other Operating Activities, Cash Flow Statement NET CASH PROVIDED BY CONTINUING OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities, Continuing Operations NET CASH PROVIDED BY DISCONTINUED OPERATIONS Cash Provided by (Used in) Operating Activities, Discontinued Operations NET CASH PROVIDED BY OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities Additions to oil and gas property Payments to Explore and Develop Oil and Gas Properties Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations NET CASH PROVIDED BY DISCONTINUED OPERATIONS Cash Provided by (Used in) Investing Activities, Discontinued Operations NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS AT END OF PERIOD Income Statement [Abstract] Petroleum Reserves [Axis] Petroleum Reserves [Axis] Type of Reserve [Domain] Type of Reserve [Domain] Oil [Member] Oil [Member] Gas [Member] Natural Gas [Member] Natural gas liquids [Member] Natural Gas Liquids [Member] Other assets [Member] Property, Plant and Equipment, Other Types [Member] REVENUES AND OTHER: Revenues [Abstract] Oil and gas production revenues Oil and Gas Revenue [Abstract] Oil and Gas Production Revenues Exploration and Production Revenue Other Other Sales Revenue Losses Net Other sales revenue losses net. Gain (loss) on divestitures Total revenues and other Oil and Gas Revenue OPERATING EXPENSES: Operating Expenses [Abstract] Lease operating expenses Oil and Gas Property, Lease Operating Expense Gathering and transportation Gas Gathering, Transportation, Marketing and Processing Costs Taxes other than income Taxes, Other Exploration Exploration Expense General and administrative General and Administrative Expense Depreciation, depletion, and amortization: Depreciation, Depletion and Amortization [Abstract] Depreciation, depletion and amortization Asset retirement obligation accretion Asset Retirement Obligation, Accretion Expense Transaction, reorganization, and separation Financing costs, net Amortization of Debt Issuance Costs Total operating expenses Costs and Expenses LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Current income tax provision (benefit) Current Income Tax Expense (Benefit) Deferred income tax provision (benefit) NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest NET LOSS INCLUDING NONCONTROLLING INTEREST Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest NET LOSS ATTRIBUTABLE TO COMMON STOCK Net Income (Loss) Available to Common Stockholders, Basic NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net loss from continuing operations attributable to common shareholders Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Net loss from discontinued operations NET LOSS PER COMMON SHARE: Earnings Per Share, Basic [Abstract] Basic net loss from continuing operations per share Income (Loss) from Continuing Operations, Per Basic Share Basic net loss from discontinued operations per share Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Basic net loss per share Earnings Per Share, Basic DILUTED NET LOSS PER COMMON SHARE: Earnings Per Share, Diluted [Abstract] Diluted net loss from continuing operations per share Income (Loss) from Continuing Operations, Per Diluted Share Diluted net loss from discontinued operations per share Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Diluted net loss per share Earnings Per Share, Diluted WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted DIVIDENDS DECLARED PER COMMON SHARE Common Stock, Dividends, Per Share, Declared Acquisitions and Divestitures Business Combination Disclosure [Text Block] Financial Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Guarantees [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Apache Corporation [Member] Parent Company [Member] Apache Finance Canada [Member] Guarantor Subsidiaries [Member] All Other Subsidiaries of Apache Corporation [Member] All Other Subsidiaries [Member] All other subsidiaries. Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reclassifications & Eliminations [Member] Consolidation, Eliminations [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Equity in net income (loss) of affiliates Income (Loss) from Equity Method Investments Gain on divestitures, net Total operating expenses Provision (benefit) for income taxes Income Tax Expense (Benefit) Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter of Credit [Member] Letter of Credit [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Commercial Paper [Member] Commercial Paper [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Credit facility maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Debt instrument term Debt Instrument, Term Credit facility maturity date Line of Credit Facility, Expiration Date Debt instrument, face amount Debt Instrument, Face Amount Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Debt issuance costs Unamortized Debt Issuance Expense Long-term debt Long-term Debt Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Property and equipment - cost Property, Plant and Equipment, Gross Less: Accumulated depreciation, depletion, and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Oil and Gas Property, Full Cost Method, Net Total Assets Assets Other current liabilities Other Liabilities, Current Income taxes Deferred Tax Liabilities, Net, Noncurrent Paid-in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest TOTAL EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Divestiture [Member] Divestiture [Member] Divestiture [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Summary of Sales and Other Operating Revenue and Loss from Discontinued Operation Related to Disposition Revenue And Net Loss On Disposition Table [Table Text Block] Revenue And Net Loss On Disposition Table [Text Block] Schedule Of Significant Accounting Policies [Table] Schedule Of Significant Accounting Policies [Table] Schedule Of Significant Accounting Policies [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] US and Canada [Member] US and Canada [Member] US and Canada [Member] Oil and Gas Properties, Proved [Member] Oil and Gas Properties, Proved [Member] Oil and Gas Properties, Proved [Member] Oil and Gas Properties, Unproved [Member] Oil and Gas Properties, Unproved [Member] Oil and Gas Properties, Unproved [Member] Gas Gathering, Transmission, and Processing Assets [Member] Gas Gathering, Transmission, and Processing Assets [Member] Gas Gathering, Transmission, and Processing Assets [Member] Schedule Of Significant Accounting Policies [Line Items] Schedule Of Significant Accounting Policies [Line Items] Schedule Of Significant Accounting Policies [Line Items] Asset impairment charges and unproved oil and gas leasehold impairments Asset Impairment Charges and Unproved Oil and Gas Leasehold Impairments Asset Impairment Charges and Unproved Oil and Gas Leasehold Impairments Asset impairments Impairment of Oil and Gas Properties Property, plant and equipment, fair value Property, Plant, and Equipment, Fair Value Disclosure U.K. Petroleum Revenue Tax rate UK Petroleum Revenue Tax Rate UK Petroleum Revenue Tax Rate Impairment charge of PRT benefits, before tax Impairment Charge of Petroleum Revenue Tax Benefits, Before Tax Impairment Charge of Petroleum Revenue Tax Benefits, Before Tax Impairment charge of PRT benefits, net of tax Impairment Charge of Petroleum Revenue Tax Benefits, Net of Tax Impairment Charge of Petroleum Revenue Tax Benefits, Net of Tax Remaining recoverable PRT benefits Remaining Recoverable Petroleum Revenue Tax Benefits Remaining Recoverable Petroleum Revenue Tax Benefits Oil and gas property, fair value disclosure Oil and Gas Property, Fair Value Disclosure Oil and Gas Property, Fair Value Disclosure Impairment of goodwill Goodwill, Impairment Loss Impairment of inventory Inventory Write-down Capital Stock Stockholders' Equity Note Disclosure [Text Block] Extractive Industries [Abstract] Capitalized Exploratory Well Costs Suspended Well Costs Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Common stock, dividends, per share Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Commercial Paper and Committed Bank Facilities [Member] Commercial Paper and Committed Bank Facilities [Member] Commercial Paper and Committed Bank Facilities [Member] Notes and Debentures [Member] Notes And Debentures [Member] Notes and debentures. Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Reported Value Measurement [Member] Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Carrying Amount Debt, Long-term and Short-term, Combined Amount Fair Value Debt Instrument, Fair Value Disclosure Interest expense Interest Expense, Debt Amortization of deferred loan costs Amortization of Deferred Charges Capitalized interest Interest Costs Capitalized Adjustment Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Interest income Investment Income, Interest Financing costs, net Payables and Accruals [Abstract] Accrued operating expenses Accrued Operating Expenses Accrued operating expenses. Accrued exploration and development Accrued Exploration And Development Accrued exploration and development. Accrued compensation and benefits Employee-related Liabilities, Current Accrued interest Interest Payable, Current Accrued income taxes Accrued Income Taxes, Current Current debt Other Long-term Debt, Current Current asset retirement obligation Other Other Sundry Liabilities, Current Total other current liabilities Statement of Financial Position [Abstract] Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares Debt and Financing Costs Debt Disclosure [Text Block] Number of reporting segments Number of Reportable Segments Asset Retirement Obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Asset Retirement Obligation Asset Retirement Obligation Disclosure [Text Block] Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Other Other Noncash Income (Expense) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Inventories Increase (Decrease) in Inventories Drilling advances Increase (Decrease) in Customer Advances Deferred charges and other Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses Increase (Decrease) in Accrued Liabilities Deferred credits and noncurrent liabilities Deferred Credits and Noncurrent Liabilities Deferred credits and noncurrent liabilities. CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Leasehold and property acquisitions Additions to gas gathering, transmission, and processing facilities Additions To Gas Gathering Transmission And Processing Facilities Additions to gas gathering, transmission and processing facilities. Proceeds from sale of other oil and gas properties Proceeds from Sale of Oil and Gas Property and Equipment Other, net Payments for (Proceeds from) Other Investing Activities NET CASH USED IN CONTINUING INVESTING ACTIVITIES CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Commercial paper and bank credit facilities, net Proceeds From Repayments Of Commercial Paper And Bank Credit Facilities Proceeds from repayments of commercial paper and bank credit facilities. Payment of fixed-rate debt Repayments of Unsecured Debt Distributions to noncontrolling interest Payment Of Distributions To Noncontrolling Interests Payment of distributions to noncontrolling interests. Dividends paid Payments of Dividends Other Proceeds from (Payments for) Other Financing Activities NET CASH USED IN FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities SUPPLEMENTARY CASH FLOW DATA: Supplemental Cash Flow Information [Abstract] Interest paid, net of capitalized interest Interest Paid, Net Income taxes paid, net of refunds Income Taxes Paid, Net Previously Reported [Member] Effect of change in accounting principle [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Paid-In Capital [Member] Additional Paid-in Capital [Member] Retained Earnings (Accumulated Deficit) [Member] Retained Earnings [Member] Treasury Stock [Member] Treasury Stock [Member] Accumulated Other Comprehensive Loss [Member] AOCI Attributable to Parent [Member] Apache Shareholders' Equity [Member] Parent [Member] Non Controlling Interest [Member] Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Effect of change in accounting principle New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets Net income (loss) Distributions to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Common dividends Dividends, Common Stock, Cash Other Other Interest and Dividend Income Ending Balance CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES CASH PROVIDED BY DISCONTINUED OPERATIONS CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES Investment in subsidiaries, net Proceeds From Payments To Acquire Interest In Subsidiaries And Affiliate Proceeds from payments to acquire interest in subsidiaries and affiliate. Other Proceeds from Sale of Other Oil and Gas Properties, and Payments for (Proceeds from) Other Investing Activities Proceeds from Sale of Other Oil and Gas Properties, and Payments for (Proceeds from) Other Investing Activities Intercompany borrowings Proceeds from (Repayments of) Related Party Debt Common stock activity, net Payments for Repurchase of Common Stock NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities, Continuing Operations NET CASH USED IN DISCONTINUED OPERATIONS Cash Provided by (Used in) Financing Activities, Discontinued Operations Supplemental Condensed Consolidating Statement of Operations Condensed Income Statement [Table Text Block] Supplemental Condensed Consolidating Statement of Cash Flows Condensed Cash Flow Statement [Table Text Block] Supplemental Condensed Consolidating Balance Sheet Condensed Balance Sheet [Table Text Block] Other Current Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Natural Gas [Member] Natural Gas Liquids [Member] Oil and gas property and equipment, Recurring [Member] Oil And Gas Property And Equipment Recurring [Member] Oil And Gas Property And Equipment Recurring [Member] Oil and gas property and equipment, Additional [Member] Oil And Gas Property And Equipment Additional [Member] Oil And Gas Property And Equipment Additional [Member] NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Her Majesty's Revenue and Customs (HMRC) [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Deferred foreign tax benefit Deferred Foreign Income Tax Expense (Benefit) ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Receivables, net of allowance Receivables, Net, Current Inventories Inventory, Net Drilling advances Drilling Advances Drilling advances. Prepaid assets and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current PROPERTY AND EQUIPMENT: Property, Plant and Equipment, Net [Abstract] Oil and gas, on the basis of successful efforts accounting: Oil and Gas Property, Full Cost Method, Net [Abstract] Proved properties Capitalized Costs, Proved Properties Unproved properties and properties under development, not being amortized Capitalized Costs, Unproved Properties Gathering, transmission and processing facilities Gas Gathering Transmission And Processing Facilities Non Current Gas gathering transmission and processing facilities non current. Other Property, Plant and Equipment, Other, Gross Property and equipment, gross OTHER ASSETS: Other Assets, Noncurrent [Abstract] Deferred charges and other Deferred Costs and Other Assets Total assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Other current liabilities (Note 5) Total current liabilities Liabilities, Current LONG-TERM DEBT Long-term Debt, Excluding Current Maturities DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES: Liabilities, Noncurrent [Abstract] Asset retirement obligation Other Other Liabilities, Noncurrent Total deferred credits and other noncurrent liabilities Liabilities, Other than Long-term Debt, Noncurrent COMMITMENTS AND CONTINGENCIES (Note 9) Commitments and Contingencies EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.625 par, 860,000,000 shares authorized, 412,602,756 and 411,218,105 shares issued, respectively Common Stock, Value, Issued Treasury stock, at cost, 33,173,422 and 33,183,930 shares, respectively Treasury Stock, Value APACHE SHAREHOLDERS’ EQUITY Stockholders' Equity Attributable to Parent TOTAL LIABILITIES AND EQUITY Liabilities and Equity Change in Accounting Principle New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Revenues and other from discontinued operations Disposal Group, Including Discontinued Operation, Revenue Impairments Income from divested Australian operations Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax benefit (expense) Discontinued Operation, Tax Effect of Discontinued Operation Loss from Australian discontinued operations, net of tax Notes Due 2029 [Member] Notes Due Two Thousand And Twenty Nine [Member] Notes due 2029. Publicly traded notes Notes Payable, Noncurrent Publicly-traded notes maturity date Debt Instrument Maturity Year Debt Instrument Maturity Year Equity ownership percentage Capitalized exploratory well costs Capitalized Exploratory Well Costs Capitalized exploratory well costs that have been capitalized for period greater than one year Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year Increase of capitalized exploratory well costs that have been capitalized for a period greater than one year Increase (Decrease) of Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year Increase (Decrease) of Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year Supplemental Guarantor Information Guarantees [Text Block] Commitment And Contingencies [Table] Commitment And Contingencies [Table] Commitment And Contingencies [Table] Australian Operations [Member] Australian Operations [Member] Australian Operations [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Apollo Exploration Lawsuit [Member] Apollo Exploration Lawsuit [Member] Apollo Exploration Lawsuit [Member] Environmental Matters [Member] Environmental Issue [Member] Australian Operations Divestiture Dispute [Member] Australian Operations Divestiture Dispute [Member] Australian Operations Divestiture Dispute [Member] Commitment And Contingencies [Line Items] Commitment And Contingencies [Line Items] Commitment And Contingencies [Line Items] Accrued liability for legal contingencies Loss Contingency Accrual Plaintiffs alleged damages Loss Contingency, Damages Sought, Value Undiscounted reserve for environmental remediation Accrual for Environmental Loss Contingencies, Gross Fine paid Loss Contingency, Damages Paid, Value Placeholder notice of claim period Placeholder Notice of Claim Period Placeholder Notice of Claim Period Divestiture of business, tax and other issues contingency amount Loss Contingency, Estimate of Possible Loss Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Operating Segments [Member] Operating Segments [Member] Other International [Member] Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] U.S. [Member] UNITED STATES Egypt [Member] EGYPT North Sea [Member] North Sea [Member] North Sea. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Operating Income (Loss) Operating Income (Loss) Other Income (Expense): Nonoperating Income (Expense) [Abstract] Other Other Nonoperating Income (Expense) General and administrative Transaction, reorganization, and separation Financing costs, net Detail of Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Deferred tax asset Deferred Tax Assets, Net of Valuation Allowance, Current Intercompany receivable Due from Related Parties, Current PROPERTY AND EQUIPMENT, NET Intercompany receivable Due from Related Parties Equity in affiliates Advances to Affiliate Intercompany payable Due to Related Parties, Current Intercompany payable Due to Related Parties, Noncurrent APACHE SHAREHOLDERS’ EQUITY Reconciliation of the components of basic and diluted net loss per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary of Carrying Amounts and Estimated Fair Values Fair Value, by Balance Sheet Grouping [Table Text Block] Components of Financing Costs, Net Financing Costs Net Table [Table Text Block] Financing costs net. Basic: Loss from continuing operations Income Loss From Continuing Operations Basic Income Loss From Continuing Operations Basic Loss from discontinued operations Income Loss From Discontinued Operations Basic Income Loss From Discontinued Operations Basic Loss from continuing operations, shares Weighted Average Number Of Shares From Continuing Operations Basic Weighted average number of shares from continuing operations basic. Loss from discontinued operations, shares Weighted Average Number Of Shares From Discontinued Operations Basic Weighted average number of shares from discontinued operations basic. Loss attributable to common stock, shares Basic loss from continuing operations, per share Basic loss from discontinued operations, per share Diluted: Loss from continuing operations Income Loss From Continuing Operations Diluted Income Loss From Continuing Operations Diluted Loss from discontinued operations Income Loss From Discontinued Operations Diluted Income Loss From Discontinued Operations Diluted Loss attributable to common stock Net Income (Loss) Available to Common Stockholders, Diluted Loss from continuing operations, shares Weighted Average Number Of Shares From Continuing Operations Diluted Weighted average number of shares from continuing operations diluted. Loss from discontinued operations, shares Weighted Average Number Of Shares From Discontinued Operations Diluted Weighted average number of shares from discontinued operations diluted. Loss attributable to common stock, shares Diluted loss from continuing operations, per share Diluted loss from discontinued operations, per share