Entity Listings [Table] Entity Listings [Table] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Statistical Measurement [Domain] Statistical Measurement [Domain] Schedule of Debt Securities Carried at Fair Value Debt Securities, Available-for-Sale [Table Text Block] Schedule of Net Exposures from Outstanding Commodity Derivative Contracts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Commodity Contract Commodity Contract [Member] Crude oil Crude Oil [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Int'l. Foreign Plan [Member] Assets - cash collateral Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Restricted cash, current Restricted Cash, Current Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Capital in Excess of Par Additional Paid-in Capital [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Interest Rate Swap Interest Rate Swap [Member] Equity in earnings of affiliates Equity in earnings of affiliates Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Basic earnings per share Earnings Per Share, Basic [Abstract] Credit Risk [Axis] Credit Risk [Axis] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Short-term investments purchased Payments to Acquire Short-Term Investments Schedule of Significant Transactions with Related Parties Schedule of Related Party Transactions [Table Text Block] Increase (decrease) in accounts payable Increase (Decrease) in Accounts Payable Schedule of Net Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Maximum potential future payments Guarantor Obligations, Maximum Exposure, Undiscounted Position [Axis] Position [Axis] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Basic (in dollars per share) Net Income (Loss) Per Share of Common Stock, Basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Natural Gas and Power, 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] Commercial paper Commercial Paper [Member] Additional collateral, aggregate fair value Additional Collateral, Aggregate Fair Value NFE4 QatarEnergy LNG NFE(4) [Member] QatarEnergy LNG NFE(4) Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Liabilities - cash collateral Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Measurement Input Type [Domain] Measurement Input Type [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Guarantor obligations, remaining term Guarantor Obligations, Remaining Term Guarantor Obligations, Remaining Term Pension Benefits Pension Plan [Member] Business acquisition, cost per every dollar exceeding threshold Business Acquisition, Contingent Consideration, Cost Per Every Dollar Exceeding Threshold Business Acquisition, Contingent Consideration, Cost Per Every Dollar Exceeding Threshold Employee Stock Option Share-Based Payment Arrangement, Option [Member] U.S. government agency obligations US Government Corporations and Agencies Securities [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Proceeds from asset dispositions Proceeds from Sale of Productive Assets Qatar Energy Qatar Energy [Member] Qatar Energy Excise tax on share repurchases Share Repurchase Program, Excise Tax In event of downgrade below investment grade In event of downgrade below investment grade [Member] Natural Gas and Power, Fixed Price Natural Gas Power and Carbon Dioxide Emissions Flat Price [Member] Natural gas power and carbon dioxide emissions flat price. Litigation settlement, amount awarded from other party Litigation Settlement, Amount Awarded from Other Party 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] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Operating Segments And Corporate Nonsegment Operating Segments And Corporate Non Segment [Member] Operating Segments And Corporate Non Segment Financial Assets [Abstract] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Total liabilities and equity Liabilities and Equity Commodity derivatives Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Defined Benefit Plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Investments and long-term receivables, remaining maturity Investments And Long-Term Receivables, Remaining Maturity Investments And Long-Term Receivables, Remaining Maturity Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] 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] Offsetting Derivative Assets [Abstract] Offsetting Derivative Assets [Abstract] Maximum Maximum [Member] Cash and cash equivalents, carried at cost plus accrued interest Cash and Cash Equivalents, carried at cost plus accrued interest Amount of investment in debt security, classified as cash and cash equivalents, measured at cost plus accrued interest, excluding those carried at fair value. Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Guarantees [Abstract] Guarantees [Abstract] EMENA 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] Treasury Stock Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Equity investments Investment Owned, Fair Value 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 [Member] Liabilities Liabilities [Abstract] 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 Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Operating Segments Operating Segments [Member] Schedule of 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 Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Investments and long-term receivables Remaining Maturities Greater than One Year Through Eight Years [Member] Financial instruments with maturities greater than one year through eight years. Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Severance accrual, beginning balance Severance accrual, ending balance Restructuring Reserve Schedule of Commodity Derivative Balances Subject to Right of Setoff Offsetting Assets and Liabilities [Table Text Block] Tabular disclosure of derivative assets and liabilities that are subject to offsetting, including master netting arrangements. PALNG Port Arthur LNG [Member] Port Arthur LNG Deferred income taxes Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus Working capital changes associated with investing activities Increase decrease in capital accrual Increase or decrease in capital accrual. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Debentures Unsecured Debt [Member] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Award Type Award Type [Axis] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Total debt, excluding finance leases Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Accounts and notes receivable, net Accounts and notes receivable Accounts and Financing Receivable, after Allowance for Credit Loss Total assets Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Entity Address, City or Town Entity Address, City or Town Cash Flows From Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Total Segment Reporting, Other Segment Item, Amount Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Venezuela VENEZUELA 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 Inventories Inventory Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Equatorial Guinea Gurantees Equatorial Guinea Gurantees [Member] Equatorial Guinea Gurantees Entity Emerging Growth Company Entity Emerging Growth Company Severance accrual, current Restructuring Reserve, Current Dividends declared, ordinary (in dollars per share) Common Stock, Dividends, Per Share, Declared China National Petroleum Corporation China National Petroleum Corporation [Member] China National Petroleum Corporation Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Net Carrying Amount of Held to Maturity Investments Debt Securities, Held-to-Maturity [Table Text Block] Income Statement Related Party Transaction [Abstract] Related party transaction. Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] 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] Business combination, contingent, consideration arrangements, term Business Combination, Contingent, Consideration Arrangements, Term Business Combination, Contingent, Consideration Arrangements, Term Level 2 Fair Value, Inputs, Level 2 [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] 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] Related Party Related Party [Member] PEO PEO [Member] 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. Accretion on discounted liabilities Accretion Expense, Including Asset Retirement Obligations Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] AP Asia Pacific Operating Segment [Member] Interest income Investment Income, Interest Proceeds from legal settlements Proceeds From Legal Settlements, To Date Proceeds From Legal Settlements, To Date Valuation allowance, decrease Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Other Other Segment Expense Other Segment Expense 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] 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] Guarantor obligations, current carrying value Guarantor Obligations, Current Carrying Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current 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. Includes selling, general and administrative expense, before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement as well as Interest and debt related expenses associated with nonoperating financing activities of the entity. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date 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 Income tax provision (benefit) Income tax provision (benefit) Income Tax Expense (Benefit) Accrued income and other taxes Taxes Payable, Current Fair Value Investments, Fair Value Disclosure Demand deposits Demand Deposits [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Long-term investments purchased Payments to Acquire Long-Term Investments 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 Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Indemnification Agreement Indemnification Agreement [Member] Short-term investments, carried at cost plus accrued interest Short-term investments, carried at cost plus accrued interest The amount of short-term investments carried at cost plus accrued interest. Schedule of Guarantor Obligations [Table] Guarantor Obligation [Table] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 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] APLNG Australia Pacific APLNG [Member] Australia Pacific APLNG. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Canada Canada Operating Segment [Member] Commodity derivative liabilities Price Risk Derivative Instruments Not Designated as Hedging Instruments Liability, at Fair Value Related Party Transactions [Abstract] Related Party Transactions [Abstract] 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. Recognized net actuarial loss (gain) Defined Benefit Plan, Amortization of Gain (Loss) Natural gas Natural Gas [Member] Type of Reserve [Domain] Type of Reserve [Domain] Purchased commodities Cost of Sales [Member] 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] Prepaid expenses and other current assets Prepaid Expenses and Other Current Assets [Member] Liabilities - gross amounts recognized Derivative Liability, Subject to Master Netting Arrangement, before Offset Crude oil Crude oil product line [Member] Crude oil product line. Equity Components [Axis] Equity Components [Axis] International Non-US [Member] Petroleum Reserves [Axis] Petroleum Reserves [Axis] Cleanup Remediation Activities Cleanup Remediation Activities [Member] Environmental assessment and remeciation activities. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Litigation settlement amount awarded from other party revised Litigation Settlement Amount Awarded From Other Party Revised Revised amount awarded from other party in judgment or settlement of litigation. Measurement input Business Combination, Contingent Consideration, Liability, Measurement Input Sales and other operating revenues Sales [Member] Corporate Corporate Segment [Member] Corporate Segment Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Exploration expenses Exploration Expense Amortized Cost Basis Debt Securities, Available-for-Sale, Amortized Cost Other Performance Measure, Amount Other Performance Measure, Amount Short-term debt Debt, Current Entity Address, State or Province Entity Address, State or Province Dividends declared, ordinary Dividends, Common Stock Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Surmont Surmont [Member] Surmont Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Financial Liabilities [Abstract] Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Accounting Changes and Error Corrections [Abstract] Dividends paid Payments of Ordinary Dividends, Common Stock Total revenues and other income Operating revenues and other income Revenues And Other Income Revenues And Other Income Capital in excess of par Additional Paid in Capital, Common Stock Line of credit facility value outstanding Line Of Credit Facility Value Outstanding Value of credit facility outstanding as distinguished from maximum borrowing capacity. Entity [Domain] Entity [Domain] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Long-term investments sold Proceeds from Sale of Long-Term Investments Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Environmental Remediation Contingency [Axis] Environmental Remediation Contingency [Axis] Entity Interactive Data Current Entity Interactive Data Current Reported Value Measurement Carrying Amount Reported Value Measurement [Member] Taxes other than income taxes Taxes, Miscellaneous Receivables and Contract Liabilities Revenue from Contract with Customer [Policy Text Block] Performance obligations secured by letters of credit Purchase Obligation Segment Disclosures and Related Information Segment Reporting Disclosure [Text Block] Mitsui & Co., Ltd Mitsui & Co., Ltd [Member] Mitsui & Co., Ltd Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Segments Total Total Segments [Member] Total Segments Variable Rate Debt Bonds Variable rate debt bonds [Member] Industrial and marine variable rate bonds. Schedule of Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Contingent consideration Business Combination, Contingent Consideration, Liability Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Selling, general and administrative expenses Production and operating expenses and selling, general and administrative expenses Selling, General and Administrative Expense Schedule of Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation, depletion and amortization Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key Settlements Pension settlement expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Sales and other operating revenues Consolidated sales and other operating revenues 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] 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 Schedule of Changes in Equity Schedule of Stockholders Equity [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Net sales (purchases) of investments Net sales (purchases) of investments Payments for (Proceeds from) Investments Materials and supplies Inventory, Raw Materials and Supplies, Gross Segments [Axis] Segments [Axis] Schedule of Balance Sheet Location and Fair Value Amounts of Derivatives 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 Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Payment for (Proceeds from) Other Investing Activity Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Sales and Other Operating Revenues Revenue [Text Block] Revenue Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Net Sales (Purchases) of Investments Payments for (Proceeds from) Short-Term Investments [Abstract] Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Employee Benefit Plans Retirement Benefits [Text Block] Fair Value Measurement Fair Value Disclosures [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 Repurchase of company common stock Treasury Stock, Value, Acquired, Cost Method Partner recoveries Restructuring Reserve, Accrued Partner Recoveries Restructuring Reserve, Accrued Partner Recoveries Accum. Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Power Power [Member] Power Accounts receivable, after allowance for credit loss, current Accounts Receivable, Allowance for Credit Loss, Current Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Within one year Remaining Maturities within One Year [Member] Financial instruments with maturities within one year. Revenue from External Customers by Products and Services Revenue from External Customers by Products and Services [Table Text Block] Credit Risk [Domain] Credit Risk [Domain] Derivative and Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Amortization of prior service cost (credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Liabilities - amounts without right of setoff Derivative Liability, Not Subject to Master Netting Arrangement Assets - gross amounts Derivative Asset, Subject to Master Netting Arrangement, before Offset Other liabilities and deferred credits Other Liabilities [Member] Fair Value as of Grant Date Award Grant Date Fair Value Accounts receivable, after allowance for credit loss Accounts Receivable, after Allowance for Credit Loss Entity Registrant Name Entity Registrant Name 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) Contingent consideration, outcome, high Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Undiscounted Amount, High Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Undiscounted Amount, High Add: Dilutive impact of options and unvested non-participating RSU/PSUs Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Entity Listings [Line Items] Entity Listings [Line Items] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Total assets Assets, Fair Value Disclosure Segment, Reconciliation of Other Items from Segments to Consolidated Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Schedule of 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] Energy [Axis] Energy [Axis] Number of operating segments Number of Operating Segments 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] Interest cost Defined Benefit Plan, Interest Cost Related Party, Type [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Interest and debt expense Interest and Debt Expense Restatement Determination Date: Restatement Determination Date [Axis] Distributed under benefit plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Qatar Qatar Liquified Gas Company [Member] Qatar Liquified Gas Company Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Summary of Severance Accruals Restructuring and Related Costs [Table Text Block] Position [Domain] Position [Domain] Other Proceeds from (Payment for) Other Financing Activity Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Number Of ongoing awards Number Of Ongoing Awards Number Of Ongoing Awards Name Trading Arrangement, Individual Name All Award Types Award Type [Domain] Unrealized gain (loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Equity Awards Adjustments Equity Awards Adjustments [Member] Phillips Petroleum Company Phillips Petroleum Company [Member] A legacy company of ConocoPhillips. Other liabilities and deferred credits Deferred Credits and Other Liabilities Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] 7% Debentures due 2029 Seven Percent Debentures Due Twenty Twenty-nine [Member] The Section 12(b) registered security, 7% Debentures due 2029. Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Debt at face value Debt Instrument, Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Production and operating expenses Operating Costs and Expenses Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Capital expenditures and investments Payment To Acquire Productive Assets And Investments Payment To Acquire Productive Assets And Investments MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Assets - net amounts presented Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral Name Awards Close in Time to MNPI Disclosures, Individual Name Energy [Domain] Energy [Domain] Benefit payments Payments for Restructuring Restricted cash, noncurrent Restricted Cash, Noncurrent Dry hole costs and leasehold impairments Exploration Abandonment and Impairment cash payments Dry hole costs and leasehold impairments related to exploration only. 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] Revenues and other income Revenues [Abstract] Trading Activities, Gain and Losses, by Type, by Income Statement Location [Table] Trading Activity, Gain (Loss) [Table] Foreign government obligations Foreign Government Debt [Member] Treasury stock (at cost: 2026—1,037,579,503 shares; 2025—1,028,350,186 shares) Treasury Stock, Value Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt Long-Term Debt and Lease Obligation Other Guarantees Other Guarantees [Member] Other guarantees. Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Financial Instruments [Domain] Financial Instruments [Domain] Litigation Case [Axis] Litigation Case [Axis] Environmental Remediation Contingency [Domain] Environmental Remediation Contingency [Domain] Other Other [Member] Other products not separately disclosed by the entity. Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Postemployment Benefits [Abstract] Balance Sheet Location [Domain] Statement of Financial Position Location, Balance [Domain] Decrease (increase) in inventories Increase (Decrease) in Inventories Inventories Total inventories Inventory, Net Minimum Minimum [Member] Unrealized Holding Gain/(Loss) on Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Sale of interest, duration Sale of interest, duration The duration from whence interests were sold. Company Selected Measure Name Company Selected Measure Name U.S. government obligations US Government Debt Securities [Member] Total environmental accrual included in balance sheet Accrual for Environmental Loss Contingencies Fair Value Measurement [Domain] Fair Value Measurement [Domain] Total debt Long-Term Debt and Lease Obligation, Including Current Maturities Liabilities - gross amounts offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts payable Accounts Payable, Current Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income (loss) available to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted All Executive Categories All Executive Categories [Member] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Par value Common Stock, Value, Issued 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 Short-Term Investments Contingencies, Commitments, and Accrued Environmental Costs Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Weighted-average diluted shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Natural gas Natural Gas Product Line [Member] Natural Gas Product Line. 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Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Physical contracts meeting the definition of a derivative Physical gas contracts [Member] Other comprehensive income (loss), net of tax Other comprehensive income (loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Geographical [Axis] Geographical [Axis] L48 Lower 48 Lower 48 [Member] Lower forty eight. Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] 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] 1 to 90 days Remaining Maturities 1 to 90 Days [Member] Maturities between one and ninety days. Level 1 Fair Value, Inputs, Level 1 [Member] Foreign currency transaction (gain) loss Gain (Loss), Foreign Currency Transaction, before Tax Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) Net Income (Loss) Per Share of Common Stock, Diluted (in dollars per share) Earnings Per Share, Diluted 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] Title of 12(b) Security Title of 12(b) Security Cash payments Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Percentage of term loans converted from floating to fixed Percentage of Debt Hedged by Interest Rate Derivatives Net income (loss) per share of common stock (dollars) Earnings per share: Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Basis of Presentation Business Description and Basis of Presentation [Text Block] Investments and Long-Term Receivables Equity Method Investments and Joint Ventures Disclosure [Text Block] Guarantor obligations, remaining term Guarantee Obligations, Remaining Term Guarantee Obligations, Remaining Term Other Stockholders' Equity, Other Environmental loss contingencies, term Environmental Loss Contingencies, Term Environmental Loss Contingencies, Term Guarantor obligations, term Guarantor Obligations, Term Guarantor Obligations, Term Income taxes Income Taxes Paid, Net Award Timing Disclosures [Line Items] Natural gas liquids Natural Gas Liquids (NGL) [Member] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Service cost Defined Benefit Plan, Service Cost NFE4 and NFS3 QatarEnergy LNG NFE() and QatarEnergy LNG NFS(3) [Member] QatarEnergy LNG NFE() and QatarEnergy LNG NFS(3) Employee benefit obligations Employee-related Liabilities, Current Foreign currency translation adjustment Restructuring Reserve, Foreign Currency Translation Gain (Loss) Unrealized holding gain (loss) on securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Net properties, plants and equipment (net of accumulated DD&A of $93,460 and $90,396, respectively) Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Changes in Equity Equity [Text Block] 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. Intersegment eliminations Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Finance Reserve Guarantee Finance Reserve Guarantee [Member] The finance reserve guarantee. 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 Accruals Restructuring Charges Other accruals Other Accruals [Member] Other accruals. Repurchase of company common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Business acquisition, maximum payment Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Gain (loss) from commodity derivatives Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Entity Current Reporting Status Entity Current Reporting Status Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Ownership percentage Investment, Ownership Percentage Investment, Ownership Percentage Joint Venture Obligation Guarantee Joint Venture Obligation Guarantee [Member] Joint Venture Obligation Guarantee Retained earnings Retained Earnings (Accumulated Deficit) Liabilities - gross amounts recognized Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement Gain (loss) on dispositions (Gain) loss on dispositions Gain (Loss) on Disposition of Property Plant Equipment Liabilities - net amounts Derivative Liability, Subject to Master Netting Arrangement, after Offset Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Repayment of debt Repayments of Debt Other income Other Operating Income (Expense), Net Arithmetic Average Arithmetic Average [Member] N3 QatarEnergy LNG N(3) [Member] QatarEnergy LNG N(3) Class of Stock [Axis] Class of Stock [Axis] Current Fiscal Year End Date Current Fiscal Year End Date 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] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Other expenses Other Nonoperating Income (Expense) 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] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash Cash [Member] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Alaska Alaska Segment [Member] The Alaska business operating segment of the entity. Assets - amounts without right of setoff Derivative Asset, Not Subject to Master Netting Arrangement Business acquisition, threshold (dollars per barrel) Business Acquisition, Contingent Consideration, Threshold Average Business Acquisition, Contingent Consideration, Threshold Average Schedule of Fair Value Hierarchy for Gross Financial Assets and Liabilities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Investments and long-term receivables Investments and long-term receivables Long-Term Investments and Receivables, Net Weighted-average common shares outstanding (in thousands) Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Liabilities - net amounts presented Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral Amendment Flag Amendment Flag Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-Maturity Securities [Line Items] Other Benefits Other Postretirement Benefits Plan [Member] Number of affiliates Number Of Affiliates Number Of Affiliates Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Total Significant Segment Expenses Significant Segment Expenses 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. Measure: Measure [Axis] Other comprehensive income (loss), net of tax: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Basic (in shares) Weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Purchased commodities Purchased commodities Cost of Product and Service Sold 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] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Assets - net amounts Derivative Asset, Subject to Master Netting Arrangement, after Offset Entity Tax Identification Number Entity Tax Identification Number Costs and expenses Costs and Expenses [Abstract] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] 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 Short Short [Member] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Schedule of Income Statement Location and Gain (Loss) Amounts of Derivatives Derivatives Not Designated as Hedging Instruments [Table Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Assets - gross amounts offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] NFS3 QatarEnergy LNG NFS(3) [Member] QatarEnergy LNG NFS(3) Security Exchange Name Security Exchange Name Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Total liabilities Liabilities Net pension liability increase Increase (Decrease) in Obligation, Pension Benefits Balance Sheet Balance Sheet Related Party [Abstract] Balance Sheet Related Party Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] 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 Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other accruals Other Liabilities, Current Employee benefit obligations Liability, Defined Benefit Plan, Noncurrent Statement [Line Items] Statement [Line Items] Asset-backed securities Asset-Backed Securities [Member] Consolidation Items [Axis] Consolidation Items [Axis] Retired debt Extinguishment of Debt, Amount Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] 91 to 180 days Remaining Maturities 91 To 180 Days [Member] Maturities between 91 and 180 days. Common Stock Par Value Common Stock [Member] Investments in debt securities Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate bonds Corporate Debt Securities [Member] Crude oil and products Energy Related Inventory, Crude Oil, Products and Merchandise Payment Guarantee Payment Guarantee [Member] Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Collateral already posted, aggregate fair value Collateral Already Posted, Aggregate Fair Value