Deferred Tax Asset Valuation Allowance [Roll Forward] Deferred Tax Asset Valuation Allowance [Roll Forward] Deferred Tax Asset Valuation Allowance 7.8% Debentures due 2027 7.8% Debentures due 2027 [Member] 7.8% Debentures due 2027 Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Reclassifications to proved properties Oil and Gas, Capitalized Exploratory Well Cost, Reclassification Based on Determination of Proved Reserve Commodity Commodity Contract [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] 2030 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Assets - Amounts Subject to Right of Setoff, Cash Collateral Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Investments and long-term receivables Business Combination, Recognized Asset Acquired, Financial Asset Impairment of Investments in Nonconsolidated Entities Impairment of Investments in Nonconsolidated Entities Policy [Policy Text Block] Impairment of Investments in Nonconsolidated Entities Policy [Policy Text Block] Entity File Number Entity File Number 5.3% Notes due 2029 5.3% Notes due 2029 [Member] 5.3% Notes due 2029 Capital in Excess of Par Additional Paid-in Capital [Member] Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Tabular List, Table Tabular List [Table Text Block] Target allocations for plan assets, percentage Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Certain Noncore Assets Certain Noncore Assets [Member] Certain Noncore Assets New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Short-term investments purchased Payments to Acquire Short-Term Investments Summarized Financial Information for Equity Method Investments in Affiliated Companies Equity Method Investment Summarized Financial Information [Table Text Block] Equity Method Investment Summarized Financial Information [Table Text Block] Significant Transactions with Related Parties Schedule of Related Party Transactions [Table Text Block] Equity securities, Common/collective trusts Defined Benefit Plan Common Collective Trust Equity Securities [Member] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Axis] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Axis] Schedule of Net Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Other liabilities incurred Business Combination, Consideration Transferred, Liabilities Incurred Maximum potential amount of future payments Guarantor Obligations, Maximum Exposure, Undiscounted Marathon Oil Corporation Marathon Oil Corporation [Member] Marathon Oil Corporation Position [Axis] Position [Axis] Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Leases [Table] Leases [Table] Basis Natural Gas Power and Carbon Dioxide Emissions Basis [Member] Natural gas power and carbon dioxide emissions basis. Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Unproved properties Oil and Gas, Capitalized Cost, before Accumulated Depreciation, Depletion, Amortization, and Valuation Allowance, Unproved Property Sales and Other Operating Revenues Revenue from Contract with Customer [Text Block] Liabilities - Amounts Subject to Right of Setoff, Cash Collateral Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Disposal group including discontinued operation, net carrying value, asset Disposal Group, Including Discontinued Operation, Assets 8.2% Debentures due 2025 8.2% Notes due 2025 [Member] 8.2% Notes due 2025 Canada Revenue Agency Canada Revenue Agency [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk percentage Concentration Risk, Percentage Guarantor obligations, remaining term Guarantor Obligations, Remaining Term Guarantor Obligations, Remaining Term Pension Benefits Pension Plan [Member] Consolidation Principles and Investments Consolidation, Policy [Policy Text Block] Share-based Payment Arrangement, Option Share-Based Payment Arrangement, Option [Member] APLNG Australia Pacific LNG [Member] Joint venture with Origin Energy Limited and China Petrochemical Corporation (Sinopec) focused on producing coalbed methane (CBM) from the Bowen and Surat basins in Queensland, Australia, to supply the domestic gas market and convert the CBM into LNG for export. Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Exploratory well costs capitalized for a period of one year or less Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period of One Year or Less Fixed price Natural Gas Power and Carbon Dioxide Emissions Flat Price [Member] Natural gas power and carbon dioxide emissions flat price. Ultimate health care cost trend rate Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Total equity Beginning balance Ending balance Equity, Attributable to Parent Impairments Asset Impairment Charges Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Insider Trading Policies and Procedures [Line Items] Property Plant And Equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Commodity derivatives Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Cover [Abstract] Cover [Abstract] Measurement Input, Commodity Price Outlook Measurement Input, Commodity Price Outlook [Member] Measurement Input, Commodity Price Outlook Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Europe, Middle East and North Africa Europe, Middle East and North Africa Segment [Member] The Europe, Middle East and North Africa operating segment. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Restricted Shares and Units Aggregate Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Investments in and Advances to Affiliates Investment Owned, Fair Value Projected and Accumulated Benefit Obligations in Excess of Fair Value Defined Benefit Plan, Plan with Projected and Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Tabular disclosure of benefit obligation and plan assets of defined benefit plan with projected and accumulated benefit obligation in excess of plan assets. 8.125% Notes due 2030 8.125% Notes due 2030 [Member] 8.125% Notes due 2030 Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other assets Other assets Other Assets [Member] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Commodity derivatives - volumetric material net exposures Derivative, Nonmonetary Notional Amount, Volume Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Geographic Information Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Property Dispositions Property Disposition Policy [Policy Text Block] Property Disposition Policy [Policy Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Issuance of debt Proceeds from Issuance of Debt Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] 6.875% Debentures due 2026 6.875% Debentures due 2026 [Member] 6.875% Debentures due 2026 Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Unrecognized prior service cost (credit) Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax One year through eight years Remaining Maturities Greater than One Year Through Eight Years [Member] Financial instruments with maturities greater than one year through eight years. Restructuring reserve Beginning balance Ending balance Restructuring Reserve Letter of Credit Letter of Credit [Member] United States Income (Loss) from Continuing Operations before Income Taxes, Domestic Finance lease cost, interest on lease liabilities Finance Lease, Interest Expense Port Arthur LNG Port Arthur LNG [Member] Port Arthur LNG Document Fiscal Period Focus Document Fiscal Period Focus Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Award Type [Axis] Award Type [Axis] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Shipping and Handling Costs Shipping And Handling Costs, Fulfillment Costs [Policy Text Block] Shipping And Handling Costs, Fulfillment Costs [Policy Text Block] Proportionately Consolidated Proportionately Consolidated [Member] Schedule of Supplemental Pro Forma Financial Information Business Combination, Pro Forma Information [Table Text Block] Investment, Name [Domain] Investment, Name [Domain] Share-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent 2021-2024 Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period One [Member] Distributed under benefit plans Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Continued Development APLNG Continued Development Member [Member] Unproved properties Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Unproved Properties Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Unproved Properties Weighted-average discount rate, finance leases Finance Lease, Weighted Average Discount Rate, Percent Sinopec Sinopec [Member] Sinopec [Member] Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Total deferred tax assets net of valuation allowance Net deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Foreign currency exchange rate change Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Severance expense Severance Costs Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Business combinations Defined Benefit Plan, Plan Assets, Business Combination Total consideration Total consideration Business Combination, Consideration Transferred Unrecognized tax benefits, settlements Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Equatorial Guinea Gurantees Equatorial Guinea Gurantees [Member] Equatorial Guinea Gurantees 4.15% Notes due 2034 4.15% Notes due 2034 [Member] 4.15% Notes due 2034 Entity Emerging Growth Company Entity Emerging Growth Company Restructuring reserve Restructuring Reserve, Current Long-term debt, excluding finance lease obligations, 2028 Long-Term Debt, Maturity, Year Three China National Petroleum Corporation China National Petroleum Corporation [Member] China National Petroleum Corporation Net Carrying Amount of Investments and Long-term Receivables Carried at Cost plus Accrued Interest Debt Securities, Held-to-Maturity [Table Text Block] Weighted-average term, finance leases Finance Lease, Weighted Average Remaining Lease Term Asset retirement obligations Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Asset Retirement Obligations Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Asset Retirement Obligations Options, Outstanding, beginning balance (in shares) Options, Outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year One Less: portion representing imputed interest Finance Lease, Liability, Undiscounted Excess Amount Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Financial derivative contracts Financial Derivative Contracts [Member] Revenues from contracts outside the scope of ASC Topic 606 relate primarily to physical gas contracts at market prices which qualify as derivatives accounted for under ASC Topic 815 Derivatives and Hedging and for which we have not elected NPNS. Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract] Accretion on discounted liabilities Accretion Expense, Including Asset Retirement Obligations Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Changes in Shares of Common Stock Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Debt instrument, exchange amount Debt Instrument, Exchange Amount Debt Instrument, Exchange Amount Noncurrent assets Assets for Plan Benefits, Defined Benefit Plan Other Other Segment Expense Other Segment Expense 4.05% Revenue Refunding Bonds 4.05% Revenue Refunding Bonds [Member] 4.05% Revenue Refunding Bonds Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Carrying value of the guarantee to third-party lenders Guarantor Obligations, Current Carrying Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Change in Benefit Obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income (Loss) From Equity Method Investments Income (Loss) From Equity Method Investments [Member] Income (Loss) From Equity Method Investments Stock Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Federal Comprehensive Environmental Response Compensation and Liability Act or Similar State Laws Federal Comprehensive Environmental Response Compensation and Liability Act or Similar State Laws [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Supplemental Pro Forma (unaudited) Business Combination, Pro Forma Information [Abstract] Income tax provision (benefit) Total tax provision (benefit) Income Tax Expense (Benefit) Income Tax Expense (Benefit) Demand Deposits Demand Deposits [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Business Combination, Asset Acquisition And Dispositions [Abstract] Business Combination, Asset Acquisition And Dispositions Long-term Investments purchased Payments to Acquire Long-Term Investments Stock options exercised, cashless Stock Options Exercised, Cashless Stock Options Exercised, Cashless Indemnifications Indemnification Agreement [Member] Net change during the period Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Reclassification Adjustment, before Tax Guarantor Obligation [Table] Guarantor Obligation [Table] Other Income Other Income and Expenses [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cash received from exercise of stock options Proceeds from Stock Options Exercised Less: Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] Acquisition of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Federal taxes Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Weighted-average remaining contractual term of outstanding options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term North Field East LNG Project North Field East LNG Project [Member] North Field East LNG Project Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Stock Units, Outstanding, beginning balance (in shares) Stock Units, Outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Canada Canada Canada Operating Segment [Member] Commodity derivative liabilities Price Risk Derivative Instruments Not Designated as Hedging Instruments Liability, at Fair Value Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] ConocoPhillips Versus Petroleos de Venezuela ICISD Conoco Phillips Versus Petroleos De Venezuela [Member] Suit related to the empresa zmixta structure madated by the Venezuelan government's Nationalization Decree. Preferred stock, par value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share Other assets Business Combination, Recognized Asset Acquired, Other Asset, Current Type of Reserve [Domain] Type of Reserve [Domain] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Short-term investments sold Proceeds from Sale of Short-Term Investments PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Weighted-Average Exercise Price, Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price 2029 Finance Lease, Liability, to be Paid, Year Four Liabilities - Amounts Subject to Right of Setoff, Gross Amounts Derivative Liability, Subject to Master Netting Arrangement, before Offset Assets acquired Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Asset Acquired, Asset [Abstract] Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Measurment input Business Combination, Contingent Consideration, Liability, Measurement Input Stock Units, Not Vested at end of year (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instrument Other Than Options Non Vested Number Share based compensation arrangement by share based payment award equity instrument other than options non vested number of shares. Net unamortized premiums, discounts and debt issuance costs Debt Instrument, Unamortized Discount (Premium), Net Sales and other operating revenues Sales [Member] 7.25% Notes due 2031 7.25% Notes due 2031 [Member] 7.25% Notes due 2031 Deferred Tax Assets Components of Deferred Tax Assets [Abstract] Corporate Corporate Segment [Member] Corporate Segment Exploration expenses Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs Exploration Expense Accrued income and other taxes Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Income And Other Taxes Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Income And Other Taxes Entity Address, State or Province Entity Address, State or Province Financing cash flows from finance leases Finance Lease, Principal Payments Origin Energy Origin Energy [Member] Origin Energy [Member] Dividends declared, ordinary Dividends, Common Stock 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Total current liabilities Current liabilities Liabilities, Current Industrial Development Bonds due 2035 at 1.23% – 5.05% during 2025 and 1.78% – 4.22% during 2024 Industrial Development Bonds Due 2035 [Member] Industrial Development Bonds Due 2035 Surmont Surmont [Member] Surmont Individual: Individual [Axis] Gross properties, plants and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Company contributions in savings plan and predecessor plans except leveraged employee stock ownership plan charged to expense Defined Contribution Plan, Cost Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Right-of-use assets obtained in exchange for finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Dividends paid Payments of Ordinary Dividends, Common Stock Document Annual Report Document Annual Report Line of credit facility, outstanding Line Of Credit Facility Value Outstanding Value of credit facility outstanding as distinguished from maximum borrowing capacity. U S Private Placement Bond U S Private Placement Bond [Member] U S Private Placement bond facility - APLNG. Foreign, percent Income (loss) before income taxes, foregin, Percentage Income (loss) before income taxes, foregin, Percentage Cash and cash equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] 4.875% Notes due 2047 4.875% Notes due 2047 [Member] 4.875% Notes due 2047 Project [Domain] Project [Domain] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Ursa, Europa Fields, And Ursa Oil Pipeline Company LLC Ursa, Europa Fields, And Ursa Oil Pipeline Company LLC [Member] Ursa, Europa Fields, And Ursa Oil Pipeline Company LLC Environmental Remediation Contingency [Axis] Environmental Remediation Contingency [Axis] Entity Interactive Data Current Entity Interactive Data Current Mutual funds Mutual Fund [Member] Interest crediting rate for applicable benefits Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate Funded Status Defined Benefit Plan, Funded (Unfunded) Status of Plan Number of projects with exploratory well costs capitalized for a period greater than one year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Number of Projects Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Total Segments Total Segments [Member] Total Segments In Event of Lowered Credit Rating In event of lowered credit rating [Member] In event of lowered credit rating. 2027 Finance Lease, Liability, to be Paid, Year Two Accumulated DD&A Finance Lease, Right-of-Use Asset, Accumulated Amortization 5.3% Notes due 2053 5.300% Notes due 2053 [Member] 5.300% Notes due 2053 Short-term investments Short-term Investments Amount of investments including trading securities, held-to-maturity securities, and short-term investments classified as other and current but excluding investement in Cenovus Energy Common Shares. State and local State And Local Taxes [Abstract] 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key Other Property, Plant and Equipment, Other, Gross PEO Name PEO Name Asset retirement obligations Beginning balance Ending balance Asset Retirement Obligation Sales and other operating revenues Revenues Total revenues and other income Consolidated sales and other operating revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Curtailment loss (gain) Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Defined Benefit Plan [Table] Defined Benefit Plan [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Net sales (purchases) of investments Total sales (purchases) of investments Payments for (Proceeds from) Investments Materials and supplies Inventory, Raw Materials and Supplies, Gross Balance Sheet Location - Fair Value Amounts of Derivatives, Balance Sheet Location Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Decrease (increase) in prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets RSU Stock Settled R S U Stock Settled Share [Member] Exercise Price Award Exercise Price QatarEnergy LNG N3 QatarEnergy LNG N(3) (N3) [Member] QatarEnergy LNG N(3) (N3) Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 5.7% Notes due 2063 5.70% Notes due 2063 [Member] 5.70% Notes due 2063 Alaska Acquisition Alaska Acquisition [Member] Alaska Acquisition Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table] Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Depreciation and Amortization Depreciation, Depletion, and Amortization [Policy Text Block] Time Deposits Bank Time Deposits [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Research and Development Expenditures—expensed Research and Development Expense Accum. Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income/(Loss) AOCI Attributable to Parent [Member] 5.0% Notes due 2035 5.0% Notes due 2035 [Member] 5.0% Notes due 2035 Allowance for accounts and notes receivable Accounts Receivable, Allowance for Credit Loss, Current Within one year Remaining Maturities within One Year [Member] Financial instruments with maturities within one year. PSU Cash Settled Program P S U Cash Settled Program [Member] Recognition of termination benefits Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Credit Risk [Domain] Credit Risk [Domain] Derivative and Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Amortization of prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Other liabilities and deferred credits Other Liabilities [Member] Name of Property [Domain] Name of Property [Domain] Fair Value as of Grant Date Award Grant Date Fair Value U.S. Defined Benefit Plan, Equity Securities, US [Member] Other Financial Information Schedule of Other Nonoperating Income (Expense) [Table Text Block] Operating loss carryforwards Operating Loss Carryforwards Debentures Debentures [Member] Debentures Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount 5.95% Notes due 2046 5.95% Notes due 2046 [Member] 5.95% Notes due 2046 Spending on existing obligations Asset Retirement Obligation, Cash Paid to Settle Add: Dilutive impact of options and unvested non-participating RSU/PSUs Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Stock Units, Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Stock Units, Settled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unrecognized compensation cost from stock options Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Entity Listings [Line Items] Entity Listings [Line Items] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Aging of Suspended Well Cost Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table Text Block] Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Guarantees Guarantees [Text Block] Other income Other Income [Member] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount 2028 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Dividends declared, variable return of cash (in dollars per share) Dividends, Variable Return of Cash, Per Share Declared Dividends, Variable Return of Cash, Per Share Declared Oil and Gas Exploration and Development Oil and Gas Properties Policy [Policy Text Block] 2.20% Revenue Refunding Bonds 2.20% Revenue Refunding Bonds [Member] 2.20% Revenue Refunding Bonds Change in Benefit Obligations and Fair Value of Plan Assets Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Interest and debt expense Expensed Interest and Debt Expense Amortization of actuarial loss included in income (loss) Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Cash consideration Cash paid Payments to Acquire Businesses, Gross Non-PEO NEO Non-PEO NEO [Member] Aggregate Intrinsic Value, Outstanding, beginning balance Aggregate Intrinsic Value, Outstanding, ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Commercial paper program, amount outstanding Letters of Credit Outstanding, Amount Debt securities, available-for-sale, allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss Position [Domain] Position [Domain] Capitalized Exploratory Well Costs [Line Items] Capitalized Exploratory Well Costs [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Unrealized gain (loss) on hedging activities Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Equity Awards Adjustments Equity Awards Adjustments [Member] Other liabilities and deferred credits 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differences Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Dry hole costs and leasehold impairments Exploration Abandonment and Impairment cash payments Dry hole costs and leasehold impairments related to exploration only. 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Equity Method Investment [Table] Equity Method Investment [Table] Max potential Future Payments-Reckless Breach Max potential future payments-reckless breach [Member] Max potential future payments-reckless breach. 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Geographical [Domain] Geographical [Domain] 5.05% Notes due 2033 5.05% Notes due 2033 [Member] 5.05% Notes due 2033 Income Taxes Income Tax, Policy [Policy Text Block] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Member] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Components of Deferred Tax Assets and Liabilities [Abstract] Components of Deferred Tax Assets and Liabilities [Abstract] 5.95% Notes due 2036 5.95% Notes due 2036 [Member] 5.95% Notes due 2036 Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Total Segment Reporting, Other Segment Item, Amount 3.35% Notes due 2025 3.35% Debentures due 2025 [Member] 3.35% Debentures due 2025 VENEZUELA VENEZUELA Concentration Risk Type [Axis] Concentration Risk Type [Axis] Inventories Inventory Disclosure [Text Block] Private equity funds Private Equity Funds [Member] 6.95% Notes due 2029 6.95% Notes due 2029 [Member] 6.95% Notes due 2029 2026 Finance Lease, Liability, to be Paid, Year One Other investments Other Investments Dividends declared, ordinary (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Right-of-use assets obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Total assets acquired Business Combination, Recognized Asset Acquired, Asset Business acquisition, term Business Combination, Contingent, Consideration Arrangements, Term Business Combination, Contingent, Consideration Arrangements, Term Level 2 Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] State income taxes, net of federal Income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount 7.2% Notes due 2031 7.2% Notes due 2031 [Member] 7.2% Notes due 2031 Equity investments Carrying value of equity method investment Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Before-tax gain (loss) on disposition Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Related Party Related Party [Member] Change in Fair Value of Plan Assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Income Taxes Charged to Income (Loss) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Plan Name [Axis] Plan Name [Axis] Post Sixty Five Retiree Post Sixty Five Retiree [Member] Accrued environmental costs discounted Accrued Enviornmental Costs Discounted Document Information [Table] Document Information [Table] PEO PEO [Member] Lease Contractual Term [Domain] Lease Contractual Term [Domain] 3.8% Notes due 2052 3.8% Note due 2052 [Member] 3.8% Note due 2052 Non-Mineral Leases Leases Disclosure [Text Block] Employee Severance Employee Severance [Member] Asia Pacific Asia Pacific Asia Pacific Operating Segment [Member] Asia Pacific Operating Segment [Member] Interest income Interest income Investment Income, Interest Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Stock repurchase program, maximum amount Share Repurchase Program, Authorized Amount, Increase Share Repurchase Program, Authorized Amount, Increase U.S. UNITED STATES Working capital adjustments Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Impaired Assets to be Disposed of by Method Other than Sale [Line Items] Impaired Assets to be Disposed of by Method Other than Sale [Line Items] Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 4.7% Notes due 2030 4.7% Notes due 2030 [Member] 4.7% Notes due 2030 Retained Earnings Retained Earnings [Member] 7.375% Debentures due 2029 7.375% Debentures due 2029 [Member] 7.375% Debentures due 2029 Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Total costs and expenses Operating Expenses Including Nonoperating Income Expense And Interest And Debt Expense Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. 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Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Commodity derivatives Derivative Asset Accrued income and other taxes Taxes Payable, Current Fair Value Investments, Fair Value Disclosure 7.4% Notes due 2031 7.4% Notes due 2031 [Member] 7.4% Notes due 2031 Other, net Noninterest Income, Other Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Weighted-Average Exercise Price, Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Business acquisition, transaction-related costs Business Combination, Transaction Cost, Excluding Separately Recognized Transaction Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation Disclosure [Abstract] Business acquisition, employee severance expense Business Acquisition, Transaction Costs, Employee Severance Business Acquisition, Transaction Costs, Employee Severance Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] New obligations, including acquisitions Asset Retirement Obligation, Liabilities Incurred Schedule of Assets Acquired and Liabilities Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 5.65% Notes due 2065 5.650% Notes due 2065 [Member] 5.650% Notes due 2065 Production and Operating Expenses Operating Costs and Expenses [Member] Operating Costs and Expenses Australia Pacific APLNG Australia Pacific APLNG [Member] Australia Pacific APLNG. 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Alaska West Willow - Alaska [Member] West Willow - Alaska Settlements loss (gain) Settlements (loss) gain Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Long-term asset retirement obligations and accrued environmental costs Asset Rretirement Obligation and Accrued Environmental Costs, Noncurrent Revolving Credit Facility Revolving Credit Facility [Member] Statutory tax rate differences Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Finance leases Total lease liabilities Finance Lease, Liability Arrangement Duration Trading Arrangement Duration 5.7% Notes due 2034 5.7% Notes due 2034 [Member] 5.7% Notes due 2034 Segments [Axis] Segments [Axis] Number of vesting installments Share-Based Payment Arrangement, Number Of Vesting Installments Share-Based Payment Arrangement, Number Of Vesting Installments Business combinations Defined Benefit Plan, Benefit Obligation, Business Combination Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Share price (in dollars per share) Share Price Other Payment for (Proceeds from) Other Investing Activity Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Fair value of contingent consideration on acquisition Noncash Or Part Noncash Acquisition, Contingent Consideration Liability Noncash Or Part Noncash Acquisition, Contingent Consideration Liability Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Revenue Refunding Bonds Due 2037 Revenue Refunding Bonds Due 2037 [Member] Revenue Refunding Bonds Due 2037 Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Weighted-Average Grant Date Fair Value, Settled (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Employee Benefit Plans Retirement Benefits [Text Block] Fair Value Measurement Fair Value Disclosures [Text Block] Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Business Combination [Line Items] Business Combination [Line Items] Credit Facility [Domain] Credit Facility [Domain] Total asset retirement obligations and accrued environmental costs Asset Rretirement Obligation and Accrued Environmental Costs Repurchase of company common stock Repurchase of company common stock Treasury Stock, Value, Acquired, Cost Method United States, percent Income (loss) before income taxes, Percent of Pretax Income Accrued partner recoveries Restructuring Reserve, Accrued Partner Recoveries Restructuring Reserve, Accrued Partner Recoveries Power Power [Member] Power Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Sales and Other Operating Revenues by Product Revenue from External Customers by Products and Services [Table Text Block] Entity Voluntary Filers Entity Voluntary Filers Value attributable to Marathon Oil share-based awards Business Combination, Consideration Transferred, Equity Awards Business Combination, Consideration Transferred, Equity Awards Liabilities - Amounts Not Subject to Right of Setoff Derivative Liability, Not Subject to Master Netting Arrangement Assets - Amounts Subject to Right of Setoff, Gross Amounts Derivative Asset, Subject to Master Netting Arrangement, before Offset Proved properties Oil and Gas, Capitalized Cost, before Accumulated Depreciation, Depletion, Amortization, and Valuation Allowance, Proved Property Accounts receivables, after allowance for credit loss Accounts Receivable, after Allowance for Credit Loss Entity Registrant Name Entity Registrant Name Prior service credit (cost) arising during the period Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Municipal Bonds Municipal Bonds [Member] Certain Jurisdictions Outside Of Domestic Certain Jurisdictions Outside Of Domestic [Member] Disposal group, including discontinued operation, liabilities Disposal Group, Including Discontinued Operation, Liabilities Other Interest Expense, Other Income Taxes Information [Line Items] Income Taxes Information [Line Items] Income Taxes Information [Line Items] Foreign currency exchange rate change Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) Stock option, Exercisable at end of year (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Total assets Assets, Fair Value Disclosure Other Segment Disclosures Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Energy [Axis] Energy [Axis] Gross Finance Lease, Right-of-Use Asset, before Accumulated Amortization Number of operating segments Number of Operating Segments PL782S - Norway PL782S - Norway [Member] PL782S - Norway [Member] Right-of-Use Assets and Lease Liabilities Lease Assets And Liabilities [Table Text Block] Amount Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount [Abstract] Schedule of Debt Schedule of Debt [Table Text Block] Equity in earnings, net of tax Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Axis] Weighted-average grant date fair value, granted (in dollars per share) Weighted-Average Grant Date Fair Value, Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Interest cost Defined Benefit Plan, Interest Cost Aging of Exploratory Well Cost, Capitalized for More than One Year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Distributed under benefit plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Deferred Deferred Foreign Income Tax Expense (Benefit) Trade Receivables Accounts Receivable [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Severance Accrual Restructuring and Related Costs [Table Text Block] Other Proceeds from (Payment for) Other Financing Activity Debt Interest Expense, Debt Net change during the period Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax Liabilities Assumed Business Combination, Recognized Liability Assumed, Liability [Abstract] Number of ongoing awards Number Of Ongoing Awards Number Of Ongoing Awards Maximum number of years accrued environmental liabilities will be paid over Maximum Number of Years Accrued Environmental Liabilities will be Paid Over Name Trading Arrangement, Individual Name Phillips Petroleum Company Phillips Petroleum Company [Member] A legacy company of ConocoPhillips. Dry hole expense Oil and Gas, Result of Operation, Dry Hole Cost 7% Debentures due 2029 Seven Percent Debentures Due Twenty Twenty-nine [Member] The Section 12(b) registered security, 7% Debentures due 2029. Debt at face value Debt Instrument, Face Amount COP Pre Sixty Five Retiree COP Pre Sixty Five Retiree [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Production and operating expenses Shipping and Handling Costs Operating Costs and Expenses Value of ConocoPhilips common stock issued Business Combination, Consideration Transferred, Equity Interest Capital expenditures and investments Payment To Acquire Productive Assets And Investments Payment To Acquire Productive Assets And Investments Foreign Foreign Income Taxes [Abstract] Mutual funds Equity Funds [Member] Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Name Awards Close in Time to MNPI Disclosures, Individual Name Energy [Domain] Energy [Domain] Weighted-Average Grant Date Fair Value, Outstanding, beginning balance (in dollars per share) Weighted-Average Grant Date Fair Value, Outstanding, ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Benefit payments Payments for Restructuring Restricted cash, noncurrent Restricted Cash, Noncurrent Restructuring Type [Axis] Restructuring Type [Axis] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Trading Activity, Gains and Losses, Net [Line Items] Trading Activity, Gains and Losses, Net [Line Items] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag 5.5% Notes due 2055 5.5% Notes due 2055 [Member] 5.5% Notes due 2055 Federal Federal Income Taxes [Abstract] Treasury stock (at cost: 2025—1,028,350,186 shares; 2024—974,806,010 shares) Treasury Stock, Value Impaired Assets to be Disposed of by Method Other than Sale [Table] Impaired Assets to be Disposed of by Method Other than Sale [Table] Aggregate Intrinsic Value, Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Additions pending the determination of proved reserves Oil and Gas, Capitalized Exploratory Well Cost, Addition Pending Determination of Proved Reserve Litigation Case [Axis] Litigation Case [Axis] Foreign Tax Jurisdiction Foreign taxes Foreign Tax Jurisdiction [Member] Environmental Remediation Contingency [Domain] Environmental Remediation Contingency [Domain] Auditor Firm ID Auditor Firm ID Segments [Domain] Segments [Domain] Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Noncurrent assets Assets, Noncurrent Cash and Cash Equivalent [Table] Cash and Cash Equivalent [Table] Remaining borrowing capacity under revolving credit facility Line of Credit Facility, Remaining Borrowing Capacity Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Benefit obligation, beginning balance Benefit obligation, ending balance Defined Benefit Plan, Benefit Obligation Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Statement of Financial Position Location, Balance [Domain] Statement of Financial Position Location, Balance [Domain] Decrease (increase) in inventories Increase (Decrease) in Inventories Interest and Debt Expense Interest Expense, Operating and Nonoperating [Abstract] Net Unrealized Holding Gain/(Loss) on Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Net Income (Loss) Per Share of Common Stock Earnings Per Share, Policy [Policy Text Block] Accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accretion of discount Asset Retirement Obligation, Accretion Expense Long-term and short-term, combined amount, gross Debt, Long-Term and Short-Term, Combined Amount, Gross Debt, Long-Term and Short-Term, Combined Amount, Gross Total debt Long-Term Debt and Lease Obligation, Including Current Maturities Revenue Recognition Revenue [Policy Text Block] Liabilities - Amounts Subject to Right of Setoff, Gross Amounts Offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Total liabilities assumed Business Combination, Recognized Liability Assumed, Liability All Executive Categories All Executive Categories [Member] Accounts and Financing Receivable, after Allowance for Credit Loss, Noncurrent Accounts and Financing Receivable, after Allowance for Credit Loss, Noncurrent Components of Deferred Tax Liabilities and Assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Par value Common Stock, Value, Issued Net PPE Finance Lease, Right-of-Use Asset, after Accumulated Amortization Distributions more (less) than income from equity affiliates Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Short-term investments Short-Term Investments Operating Activities [Domain] Operating Activities [Domain] Universal Shelf Registration Notes Universal Shelf Registration Notes [Member] Universal Shelf Registration Notes Debt securities, Common/collective trusts Common Collective Trust [Member] Business Combination [Axis] Business Combination [Axis] Foreign Currency Transaction (Gains) Losses—after-tax Gain (Loss), Foreign Currency Transaction, after Tax 4.4% Notes due 2027 4.4% Notes due 2027 [Member] 4.4% Notes due 2027 6.6% Notes due 2037 6.6% Notes due 2037 [Member] 6.6% Notes due 2037 Equity interest of ConocoPhillips Ownership percentage in equity investment Equity Method Investment, Ownership Percentage New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Project [Axis] Project [Axis] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Diluted earnings per share Earnings Per Share, Diluted [Abstract] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Scenario [Axis] Scenario [Axis] Deferred income taxes Business Combination, Recognized Liability Assumed, Deferred Tax Liability Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Defined benefit plans, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Commodity derivatives Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Domestic Plan Domestic Plan [Member] Derivative Contract [Domain] Derivative Contract [Domain] Issuance of company common stock Proceeds from Issuance of Common Stock 2030 Defined Benefit Plan, Expected Future Benefit Payment, Year Five PSUs, requisite period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period All Individuals All Individuals [Member] Leases [Line Items] Leases [Line Items] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Decrease (increase) in accounts and notes receivable Increase (Decrease) in Receivables Name Forgone Recovery, Individual Name Expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 2029 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Corporate and Other Environmental Liabilities Corporate and Other Environmental Liabilities [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Asset Retirement Obligations and Accrued Environmental Costs Asset Retirement Obligations and Accrued Environmental Costs [Table Text Block] Defined Benefit Plan, Equity Securities Defined Benefit Plan, Equity Securities [Member] Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-Maturity [Table] Other Guarantees Guarantee Type, Other [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Physical contracts meeting the definition of a derivative Physical gas contracts [Member] Oil and Gas, Capitalized Exploratory Well Cost [Roll Forward] Oil and Gas, Capitalized Exploratory Well Cost [Roll Forward] Geographical [Axis] Geographical [Axis] Taxes Collected from Customers and Remitted to Governmental Authorities Taxes Other Than Income Tax [Policy Text Block] Taxes Other Than Income Tax [Policy Text Block] Increase (decrease) in taxes and other accruals Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Pro forma - total revenues and other income Business Combination, Pro Forma Information, Pro Forma Revenue Foreign currency transaction (gain) loss Loss on forward contracts Gain (Loss), Foreign Currency Transaction, before Tax 6.8% Notes due 2032 6.8% Notes due 2032 [Member] 6.8% Notes due 2032 Less: Dividends and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security US foreign tax credits expired Deferred Tax Assets, Operating Loss Carryforwards, Expired Deferred Tax Assets, Operating Loss Carryforwards, Expired Aggregate Intrinsic Value, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Percent Income Taxes Paid, Net [Abstract] Net income (loss) per share of common stock (dollars) Earnings per share: Earnings Per Share [Abstract] Restructuring Plan [Axis] Restructuring Plan [Axis] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five 2017 and Prior Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period Three [Member] Guarantor obligations, term Guarantor Obligations, Term Guarantor Obligations, Term Net actuarial gain (loss) arising during the period Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Treasury stock, shares acquired (in shares) Treasury Stock, Shares, Acquired Remaining years Finance Lease, Liability, to be Paid, after Year Five Weighted-Average Exercise Price, Outstanding, exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Award Timing Disclosures [Line Items] Changes in Asset Retirement Obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Service cost Defined Benefit Plan, Service Cost Foreign currency translation adjustment Restructuring Reserve, Foreign Currency Translation Gain (Loss) Net receivables related to security transactions Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization Equity Equity [Text Block] Deferred Deferred State and Local Income Tax Expense (Benefit) Net income (loss) Net Income (Loss) Net income (loss) Net Income (Loss) Attributable to Parent ConocoPhillips vs Petroleos De Venezuela ICC Conoco Phillips Versus Petroleos De Venezuela 2 [Member] Suit related to contracts that established the Petrozuata and Hamaca projects in Venezuela and expropriation of the projects and other matters, arbitrated with the ICC. Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Affiliated Companies Affiliated Companies [Member] Affiliated Companies [Member] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Finance Reserve Guarantee Finance Reserve Guarantee [Member] The finance reserve guarantee. Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenue from contracts outside the scope of ASC Topic 606 Revenue Not from Contract with Customer Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Audit Information [Abstract] Audit Information Repurchase of company common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Operating loss and tax credit carryforward Operating Loss And Tax Credit Carryfoward Operating Loss And Tax Credit Carryfoward Corporate and Other Corporate And Reconciling Items [Member] Corporate And Reconciling Items Customer [Axis] Customer [Axis] Retained earnings Retained Earnings (Accumulated Deficit) Name of Property [Axis] Name of Property [Axis] Compensation Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Sub-Series 2017C Sub-Series 2017C [Member] Sub-Series 2017C Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Pipeline Company Pipeline Company [Member] Pipeline Company Curtailment Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment Arithmetic Average Arithmetic Average [Member] Class of Stock [Axis] Class of Stock [Axis] Unrealized Gain/(Loss) on Hedging Activities Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other Deferred Tax Liabilities, Other Retirement Plan Type [Axis] Retirement Plan Type [Axis] Statement [Table] Statement [Table] Other expenses Other Nonoperating Income (Expense) Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Schedule of Business Combination Business Combination [Table Text Block] Long-term receivables Accounts Receivable, after Allowance for Credit Loss, Noncurrent Deferred taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income (loss) to net cash provided by operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Unrecognized tax benefit, lapse of statute Lapse of statute Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Nontaxable or nondeductible items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Revenue Benchmark Revenue Benchmark [Member] Other foreign jurisdictions Foreign Tax Jurisdiction, Other [Member] Loss and credit carryforwards Deferred Tax Assets, Other Loss Carryforwards Finance leases, noncurrent Finance Lease, Liability, Noncurrent All Adjustments to Compensation All Adjustments to Compensation [Member] Liabilities - Amounts Subject to Right of Setoff, Net Amounts Presented Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral Amendment Flag Amendment Flag Tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit 7.0% Debentures due 2029 7% Debentures due 2029 [Member] 7% Debentures due 2029 Share based compensation plan, number of shares authorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Other Benefits Other Postretirement Benefits Plan [Member] Fair Values of Pension Plan Assets Schedule of Allocation of Plan Assets [Table Text Block] Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Asset retirement obligations and accrued environmental costs Asset Retirement Obligations and Accrued Environmental Cost Non Current Non current portion of the carrying amount of a liability for an asset retirement obligation, as well as the carrying value of an obligation (known or estimated) arising from requirements to perform activities to remediate one of more sites, payable after twelve months or beyond the next operating cycle if longer. Weighted-average discount rate, operating leases Operating Lease, Weighted Average Discount Rate, Percent Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Unrecognized tax benefits, income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Basic (in shares) Average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Commodity derivatives Assets - Gross Amounts Recognized Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Segment Reporting [Abstract] Segment Reporting [Abstract] Norwegian Warka PL1009 Norwegian Warka PL1009 [Member] Norwegian Warka PL1009 Debt Disclosure [Abstract] Debt Disclosure [Abstract] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Long-term debt Long-Term Debt and Lease Obligation [Member] Extractive Industries [Abstract] Extractive Industries [Abstract] Scenario [Domain] Scenario [Domain] Costs and expenses Costs and Expenses [Abstract] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Outer Continental Shelf Lease Outer Continental Shelf Lease [Member] Offsetting Derivative Liabilities [Abstract] Offsetting Derivative Liabilities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Prudhoe Bay Prudhoe Bay [Member] Prudhoe Bay 2031–2035 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Kuparuk River Unit Kuparuk River Unit [Member] Kuparuk River Unit Shipping and Handling Costs Shipping and Handling [Member] Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Use of Estimates Use of Estimates, Policy [Policy Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Current liabilities Liability, Defined Benefit Plan, Current Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Twenty Fourteen Omnibus Stock and Performance Incentive Plan Of Conoco Phillips Twenty Fourteen Omnibus Stock And Performance Incentive Plan Of Conoco Phillips [Member] 2.375% Revenue Refunding Bonds 2.375% Revenue Refunding Bonds [Member] 2.375% Revenue Refunding Bonds Proceeds from sale of business Proceeds from Sales of Business, Affiliate and Productive Assets Assets - Amounts Subject to Right of Setoff, Gross Amounts Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Foreign currency translation adjustments, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Purchased commodities Related Party Transaction, Purchases from Related Party Total liabilities Liabilities Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] 2030 Finance Lease, Liability, to be Paid, Year Five Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Additions based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Proceeds from sales and redemptions of investments in debt securities classified as available for sale Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Debt repurchase, premiums paid Debt Instrument, Debt Repurchase, Premiums Paid Debt Instrument, Debt Repurchase, Premiums Paid Expected future employer contributions, next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Other liabilities and deferred credits Other Liabilities and Deferred Credits [Member] Long-term debt Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Asset-backed Securities Asset-Backed Securities [Member] Consolidation Items [Axis] Consolidation Items [Axis] Certain Lower 48 Offshore Interests Certain Lower 48 Offshore Interests [Member] Certain Lower 48 Offshore Interests Other Information Other Lease Information [Table Text Block] 91 to 180 days Remaining Maturities 91 To 180 Days [Member] Maturities between 91 and 180 days. Expected expenditures for acquired environmental obligations, weighted-average discount factor rate Accrual for Environmental Loss Contingencies, Discount Rate Business acquisition, entity shares issued per acquiree share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Restricted Stock Unit Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Deferred Tax Liabilities Components of Deferred Tax Liabilities [Abstract] Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Investments in debt securities Debt Securities, Available-for-Sale PSUs, authorization period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Authorization Period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Authorization Period Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Total recognized Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Corporate Bonds Corporate Debt Securities [Member] Crude oil and products Energy Related Inventory, Crude Oil, Products and Merchandise Collateral was posted for derivative instruments in a liability position Collateral Already Posted, Aggregate Fair Value