Liabilities settled Asset Retirement Obligation, Liabilities Settled Borrowings on revolving credit facility Proceeds from Long-Term Lines of Credit Adjustments to reconcile net income to net cash provided by continuing operations activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] October 1, 2025 October 1, 2025 [Member] October 1, 2025 Additions to property, plant, equipment Segment, Expenditure, Addition to Long-Lived Assets Remaining available to repurchase Share Repurchase Program, Remaining Authorized, Amount (Increase) decrease in prepaid expenses Increase (Decrease) in Prepaid Expense Receivables from contracts with customers Contract with Customer, Asset, after Allowance for Credit Loss, Current Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Other exploratory costs, including undeveloped lease amortization and delay lease rentals Oil and Gas, Result of Operation, Expense, Other Cover [Abstract] Cover [Abstract] Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Exploration expenses, including undeveloped lease amortization Total exploration expenses Exploration Expense Trading Symbol Trading Symbol Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revisions of previous estimates Asset Retirement Obligation, Revision of Estimate Comprehensive income including noncontrolling interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest All Trading Arrangements All Trading Arrangements [Member] Long-term debt, including finance lease obligation Long-Term Debt and Lease Obligation Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Non-NEOs Non-NEOs [Member] Related income tax benefit recognized in income Share-Based Payment Arrangement, Expense, Tax Benefit Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Gain on sale of assets and other operating income Gain Loss on Sale of Assets and Other Income Gain Loss on Sale of Assets and Other Income Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Net cash income taxes (refunded) paid Income Taxes Paid, Net Cash dividends paid Dividends, Cash Vietnam VIET NAM Schedule of Share-Based Plans, Amounts Recognized in the Financial Statements Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Distributions to noncontrolling interest owners Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Pay vs Performance Disclosure [Line Items] Supplementary disclosures: Segment Reporting Information, Additional Information [Abstract] February 4, 2025 February 4, 2025 [Member] February 4, 2025 Line of Credit Facility [Table] Line of Credit Facility [Table] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount (Increase) decrease in accounts receivable Increase (Decrease) in Accounts Receivable Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Restricted stock awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Schedule of Fair Value of Derivative Instruments Not Designated as Hedging Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Award Timing Disclosures [Line Items] Loss on derivative instruments Derivative, Gain (Loss) on Derivative, Net Other Performance Measure, Amount Other Performance Measure, Amount Mark-to-market loss on derivative instruments Unrealized Gain (Loss) on Commodity Contracts Beginning of year (in shares) End of year (in shares) Common Stock, Shares, Outstanding Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Plan Name [Domain] Plan Name [Domain] Dilutive stock options and restricted stock units (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Service cost Defined Benefit Plan, Service Cost Deferred charges and other assets Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number Dry holes and previously suspended exploration costs Oil and Gas, Result of Operation, Dry Hole Cost Treasury shares purchased (in shares) Treasury Stock, Shares, Acquired Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Capitalized exploratory well costs charged to expense Capitalized exploratory well costs charged to expense Oil and Gas, Capitalized Exploratory Well Cost, Charged to Expense Retirement Plan Type [Axis] Retirement Plan Type [Axis] Operating Segments Operating Segments [Member] Contracts to sell natural gas at CAD fixed pricing CAD Fixed Price [Member] Alberta AECO Fixed Price [Member] Treasury Stock Treasury Stock, Common [Member] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] July 1, 2025 July 1, 2025 [Member] July 1, 2025 Schedule of Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other operating expenses Other Cost and Expense, Operating Asset retirement obligations Non-current portion of liability Asset Retirement Obligations, Noncurrent Plan Name [Axis] Plan Name [Axis] Accretion of asset retirement obligations Accretion of asset retirement obligations Accretion Asset Retirement Obligation, Accretion Expense Prepaid expenses Prepaid Expense, Current Equity Components [Axis] Equity Components [Axis] Award Timing Method Award Timing Method [Text Block] Total net periodic benefit expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Three years or more Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period Four [Member] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Asset retirement costs capitalized Noncash Asset Retirement Obligation Noncash additions to property, plant and equipment for asset retirement costs capitalized. Measurement Frequency [Axis] Measurement Frequency [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Insider Trading Policies and Procedures [Line Items] Total costs and expenses Costs and Expenses Adjustment to Compensation, Amount Adjustment to Compensation Amount Compensation Amount Outstanding Recovery Compensation Amount NET INCOME (LOSS) PER COMMON SHARE – DILUTED Earnings Per Share, Diluted [Abstract] 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] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Geographical [Axis] Geographical [Axis] Movement in Property, Plant and Equipment [Roll Forward] Movement in Property, Plant and Equipment [Roll Forward] Tabular List, Table Tabular List [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Award Date [Axis] Award Date [Axis] 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] Lease operating expenses Total lease operating expenses Operating Lease, Expense Exploratory well costs capitalized more than one year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year Schedule of Current Long-Term Contracts Outstanding Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Asset Acquisition [Axis] Asset Acquisition [Axis] Schedule of Volumes Per Day Associated with Outstanding Natural Gas Derivative Contracts and the Weighted Average Prices for these Contracts Schedule of Price Risk Derivatives [Table Text Block] Credit Facility [Domain] Credit Facility [Domain] Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Severance and ad valorem taxes Severance and ad valorem taxes Production Tax Expense Current assets Assets, Current [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] Withholding tax on stock-based incentive awards Payment, Tax Withholding, Share-Based Payment Arrangement Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Share repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Net natural gas revenue Natural Gas [Member] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Schedule of Fair Value Measurements, Nonrecurring Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of Net Changes in Capitalized Exploratory Well Costs Oil and Gas, Capitalized Exploratory Well Cost, Roll Forward [Table Text Block] Repurchase of common stock, gross Treasury Stock, Value, Acquired, Cost Method, Net Treasury Stock, Value, Acquired, Cost Method, Net Product and Service [Domain] Product and Service [Domain] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Amortization of undeveloped leases Amortization Of Undeveloped Lease Amortization Of Undeveloped Lease COMPREHENSIVE INCOME ATTRIBUTABLE TO MURPHY Comprehensive Income (Loss), Net of Tax, Attributable to Parent Pension Benefits Pension Plan [Member] Income taxes payable Accrued Income Taxes, Current Security Exchange Name Security Exchange Name Award Type [Axis] Award Type [Axis] 2021 NED Plan 2021 Non Employee Director Plan [Member] 2021 Non Employee Director Plan NET INCOME (LOSS) PER COMMON SHARE – BASIC Earnings Per Share, Basic [Abstract] Property additions and dry hole costs Payments to Acquire Other Productive Assets Property, plant and equipment, at cost less accumulated depreciation, depletion and amortization of $14,007,994 in 2025 and $13,811,539 in 2024 Property, Plant and Equipment, Net Total liabilities Liabilities Noncontrolling interest Equity, Attributable to Noncontrolling Interest Cash dividends per common share (in USD per share) Common Stock, Dividends, Per Share, Cash Paid Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revolving Credit Facility Revolving Credit Facility [Member] Expiration Date Trading Arrangement Expiration Date Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash provided by continuing operations activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Operating lease liabilities Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Common stock, shares issued (in shares) Common Stock, Shares, Issued Common Stock, Shares, Issued Increase (decrease) in income taxes payable Increase (Decrease) in Income Taxes Payable Entity [Domain] Entity [Domain] BW Pioneer Floating Production Storage And Offloading Vessel (FPSO) BW Pioneer Floating Production Storage And Offloading Vessel (FPSO) [Member] BW Pioneer Floating Production Storage And Offloading Vessel (FPSO) Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Credit facility maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Liabilities incurred Asset Retirement Obligation, Liabilities Incurred Derivative liability Derivative Liability Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net natural gas liquids revenue Natural Gas Liquids (NGL) [Member] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Common stock, authorized shares (in shares) Common Stock, Shares Authorized Diluted (in shares) Diluted method (in shares) Weighted Average Number of Shares Outstanding, Diluted Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Accounts payable Accounts Payable [Member] Murphy Shareholders' Equity Equity, Attributable to Parent Recognized actuarial loss (gain) Defined Benefit Plan, Amortization of Gain (Loss) United States Offshore United States Offshore [Member] United States Offshore [Member] Hedging Designation [Domain] Hedging Designation [Domain] Interest expense, net Interest (expense), net of capitalization Interest Expense, Nonoperating Deferred income tax expense Deferred Income Tax Expense (Benefit) Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Selling and general expenses Selling, General and Administrative Expense Geological and geophysical Oil and Gas, Result of Operation, Exploration Cost, Adjustments Oil and Gas, Result of Operation, Exploration Cost, Adjustments February 1,2025 April 1,2025 [Member] April 1,2025 Fair Value Fair Value, Recurring Fair Value, Recurring [Member] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Q4 2026 End Date Quarter 4 2026 [Member] End Date Quarter 4 2026 [Member] Maximum number of shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Document Fiscal Period Focus Document Fiscal Period Focus All Executive Categories All Executive Categories [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] ASSETS Assets [Abstract] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Retirement Plan Type [Domain] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Document Type Document Type Derivative Contract [Domain] Derivative Contract [Domain] Restricted stock transactions and other Stock Issued During Period, Value, Restricted Stock Award, Gross (Loss) on derivative instruments Gain (Loss) on Derivative Instruments, Net, Pretax Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Schedule of Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Q4 2027 End Date Quarter 4 2027 [Member] End Date Quarter 4 2027 Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Murphy Shareholders’ Equity Parent [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Accounts payable Accounts Payable, Current Retirement and postretirement benefit plans, net of income taxes Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Revenues and other income Revenues [Abstract] Current Fiscal Year End Date Current Fiscal Year End Date Impairment of assets Impairment of assets Total Pretax Impairment Impairment, Oil and Gas, Property with Unproved and Proved Reserves PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Distributions to noncontrolling interest Payments to Noncontrolling Interests Income from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Award Type [Domain] Award Type [Domain] Name Outstanding Recovery, Individual Name Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] United States United States Segment [Member] United States Segment Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Expected benefit plan contributions to be made during the year Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year Non-PEO NEO Non-PEO NEO [Member] Nonqualified employee savings plan Nonqualified Employee Savings Plans [Member] Nonqualified Employee Savings Plans [Member] Threshold for disclosure of monetary sanctions related to aware of legal environmental proceedings Threshold For Disclosure Of Monetary Sanctions, Not Aware Of Environmental Legal Proceedings Threshold For Disclosure Of Monetary Sanctions, Not Aware Of Environmental Legal Proceedings Repair and maintenance Utilities Operating Expense, Maintenance Capital in Excess of Par Value Additional Paid-in Capital [Member] Award Timing Predetermined Award Timing Predetermined [Flag] No. of Wells (in wells) Oil and Gas, Exploratory Well Drilled, Net Productive, Number Cash dividends paid Payments of Ordinary Dividends, Common Stock Employee and Retiree Benefit Plans Retirement Benefits [Text Block] Accounting Principles Adopted and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Commodity Swaps Commodity Swaps [Member] Commodity Swaps Amortization of prior service cost (credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net income (in USD per share) Earnings Per Share, Diluted Q4 2025 End Date, Quarter 4, 2025 [Member] End Date, Quarter 4, 2025 Schedule of Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share Schedule of Weighted Average Number of Shares [Table Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Current income tax expense Current Income Tax Expense (Benefit) Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] CANADA CANADA Retirement Benefits [Abstract] Retirement Benefits [Abstract] Cumulative preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Schedule of Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Acquisition of oil and natural gas properties Payments to Acquire Oil and Gas Property Net income including noncontrolling interest Net income including noncontrolling interest Net income including noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Retirement and Postretirement Benefit Plan Adjustments Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Two to three years Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period Three [Member] Income tax expense Income Tax Expense (Benefit) Interest cost Defined Benefit Plan, Interest Cost Other income (loss) Nonoperating Income (Expense) [Abstract] Corporate, Other, and Discontinued Operations Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Performance-based RSUs (TSR) Total Shareholder Return Performance Based Restricted Stock Units [Member] Total Shareholder Return Performance Based Restricted Stock Units Zero to one year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period One [Member] Total income tax expense Income Tax Expense (Benefit), Adjustment Income Tax Expense (Benefit), Adjustment Total revenue from sales to customers Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Schedule of Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Total other loss Nonoperating Income (Expense) Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Brunei BRUNEI DARUSSALAM Number of derivative instruments held (in derivatives) Derivative, Number of Instruments Held Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Net cash required by investing activities Net Cash Provided by (Used in) Investing Activities Operating income from continuing operations Operating Income (Loss) AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] United States - Onshore United States Onshore [Member] United States Onshore [Member] Total liabilities and equity Liabilities and Equity Triggering Event [Axis] Triggering Event [Axis] Triggering Event Other operating activities, net Other Operating Activities, Cash Flow Statement Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Selling and general expenses Selling, General and Administrative Expense, Including Discontinues Operations Selling, General and Administrative Expense, Including Discontinues Operations Capital in excess of par value Additional Paid in Capital Hedging Designation [Axis] Hedging Designation [Axis] Financial Instruments and Risk Management Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Loss from discontinued operations, net of income taxes Loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Legal Entity [Axis] Legal Entity [Axis] Current maturities of long-term debt, finance lease Long-Term Debt and Lease Obligation, Current Gulf Of America Gulf Of America [Member] Gulf Of America Underlying Security Market Price Change Underlying Security Market Price Change, Percent Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Environmental Remediation Obligations [Abstract] Environmental Remediation Obligations [Abstract] Individual: Individual [Axis] Commodity derivative contracts Commodity swaps Commodity Contract [Member] Awarded restricted stock, net of forfeitures Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Current asset retirement obligations Current portion of liability Asset Retirement Obligation, Current Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Deferred Loss on Interest Rate Derivative Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Inventories Inventory, Net Additions pending the determination of proved reserves Oil and Gas, Capitalized Exploratory Well Cost, Addition Pending Determination of Proved Reserve Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Product and Service [Axis] Product and Service [Axis] Entity Address, State or Province Entity Address, State or Province Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Statement [Line Items] Statement [Line Items] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Canada - Offshore Canada Offshore [Member] Canada Offshore [Member] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Triggering Event [Domain] Triggering Event [Domain] Triggering Event [Domain] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Interest paid, amount capitalized Interest Paid, Capitalized, Investing Activities Schedule of Components of Net Periodic Benefit Expense Schedule of Net Benefit Costs [Table Text Block] Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit), Adjustment Deferred Income Tax Expense (Benefit), Adjustment Restatement Determination Date Restatement Determination Date Fair Value Estimate of Fair Value Measurement [Member] Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Daily production (in barrels per day) Oil and Gas Delivery Commitments and Contracts, Daily Production Changes due to translation of foreign currencies Asset Retirement Obligation, Foreign Currency Translation Gain (Loss) Operating lease assets Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Number of revenue streams (in revenue streams) Number of Revenue Streams Number of Revenue Streams Segments [Axis] Segments [Axis] 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] Schedule of Awards Granted Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Derivative Instrument [Axis] Derivative Instrument [Axis] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Exercise Price Award Exercise Price Estimated defined contribution provision Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment Nonqualified employee savings plan Obligations, Fair Value Disclosure Other Financial Information Additional Financial Information Disclosure [Text Block] Net Income (Loss) Per Common Share Earnings Per Share [Text Block] Arrangement Duration Trading Arrangement Duration Schedule of Reconciliation of Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligations Schedule of Asset Retirement Obligations [Table Text Block] Costs and expenses Costs and Expenses [Abstract] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Equity Equity, Attributable to Parent [Abstract] Fair value per share at grant date (in USD 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 Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] All Individuals All Individuals [Member] Schedule of Aging of Capitalized Exploratory Well Costs Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table Text Block] Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share PEO PEO [Member] February 5, 2025 February 5, 2025 [Member] February 5, 2025 Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Well costs incurred and expensed Well Costs Incurred And Expensed Well Costs Incurred And Expensed Contract with Customer, Duration [Domain] Contract with Customer, Duration [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Current and long-term debt Debt Instrument, Fair Value Disclosure Name Trading Arrangement, Individual Name Other income Other Nonoperating Income (Expense) Other Postretirement Benefits Other Postretirement Benefits Plan [Member] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Projects with Exploratory Well Costs Capitalized for More than One Year [Table] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table] Treasury stock Treasury Stock, Common, Value Threshold of executive compensation not eligible for U.S. income tax deduction Tax Cuts and Jobs Act of 2017, Threshold of Deductible Compensation For Executive Officers Tax Cuts and Jobs Act of 2017, Threshold of Deductible Compensation For Executive Officers Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] 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] Common Stock Issued and Outstanding Common Stock Disclosure [Text Block] Common Stock Disclosure. Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Aging of Capitalized Exploratory Well Costs, Period Range [Domain] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Domain] Local Phone Number Local Phone Number Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Deferred income taxes Deferred Income Tax Liabilities, Net Components of other comprehensive income (loss): Component of Operating Income [Abstract] Workovers Utilities Operating Expense, Operations Treasury shares purchased (in shares) Stock Repurchased During Period, Shares Net (increase) decrease in operating working capital, excluding cash and cash equivalents: Increase (Decrease) in Operating Capital [Abstract] One to two years Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period Two [Member] PEO Total Compensation Amount PEO Total Compensation Amount Derivative liability Derivative Liability, Subject to Master Netting Arrangement, before Offset Debt Disclosure [Abstract] Debt Disclosure [Abstract] Sales of purchased natural gas Sales of purchased natural gas Oil and Gas, Purchased [Member] Common Stock Common Stock [Member] Measure: Measure [Axis] Asset Class [Domain] Asset Class [Domain] Cumulative preferred stock, authorized shares (in shares) Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Q4 2028 End Date Quarter 4 2028 [Member] End Date Quarter 4 2028 Entity Emerging Growth Company Entity Emerging Growth Company Liabilities Liabilities, Fair Value Disclosure Net crude oil and condensate revenue Oil [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Environmental and Other Contingencies Environmental Loss Contingency Disclosure [Text Block] Entity Central Index Key Entity Central Index Key Other segment items Segment Reporting, Other Segment Item, Amount Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Foreign Currency Translation Gains (Losses) Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Revenue from production Revenue from production Oil and Gas, Exploration and Production [Member] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Reclassifications before taxes, included in net periodic benefit expense Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Time-based RSUs (Cash-Settled) Cash Settled Restricted Stock Units [Member] Cash Settled Restricted Stock Units [Member] Increase (decrease) in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Cumulative preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Financial Instrument [Axis] Financial Instrument [Axis] Lease operating expenses and taxes other than income Utilities Operating Expense, Taxes Business Segments Segment Reporting Disclosure [Text Block] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Reclassifications to income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax New Accounting Principles and Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Measurement Basis [Axis] Measurement Basis [Axis] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Title Trading Arrangement, Individual Title Unsecured Debt Unsecured Debt [Member] Statement [Table] Statement [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Line Items] Remaining performance obligation Revenue, Remaining Performance Obligation, Quantity Per Day Revenue, Remaining Performance Obligation, Quantity Per Day Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Consolidation Items [Domain] Consolidation Items [Domain] City Area Code City Area Code Current liabilities Liabilities, Current [Abstract] Interest paid, net of amounts capitalized of $1.1 million in 2025 and $3.9 million in 2024 Interest Paid, Excluding Capitalized Interest, Operating Activities Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Initial payments to acquire productive assets Payments to Acquire Productive Assets Level 1 Fair Value, Inputs, Level 1 [Member] Net gain (loss) from foreign currency translation Foreign currency translation, net of income taxes Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Interest Income Other Nonoperating Income (Expense), Adjustment Other Nonoperating Income (Expense), Adjustment Non-cash investing activities: Noncash Investing and Financing Items [Abstract] Unsuccessful exploration well costs and previously suspended exploration costs Unsuccessful Exploration Well Costs And Previously Suspended Exploration Costs (Credit) Unsuccessful Exploration Well Costs And Previously Suspended Exploration Costs (Credit) Average common shares outstanding Average Common Shares Outstanding [Abstract] Average Common Shares Outstanding Repurchase of common stock Payments for Repurchase of Common Stock Net (increase) in non-cash working capital Net (increase) in non-cash working capital Increase (Decrease) in Operating Capital Contributions to benefit plans Defined Benefit Plan, Plan Assets, Contributions by Employer Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Operations And Maintenance Services, Term Of Contract Operations And Maintenance Services, Term Of Contract Operations And Maintenance Services, Term Of Contract Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Income Taxes Income Tax Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Equity [Abstract] Other taxes payable Accrual for Taxes Other than Income Taxes, Current Retained earnings Retained Earnings (Accumulated Deficit) (Increase) decrease in inventories Increase (Decrease) in Inventories Repayment of revolving credit facility Repayments of Long-Term Lines of Credit Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Net cash provided (required) by financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Schedule of Noncash Operating Working Capital (Increase) Decrease Cash Flow, Operating Capital [Table Text Block] Interest rate Line of Credit Facility, Interest Rate During Period Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Credit Facility [Axis] Credit Facility [Axis] Amendment Flag Amendment Flag Carrying Amount Reported Value Measurement [Member] Entity Registrant Name Entity Registrant Name Other Financial Information [Abstract] Other Financial Information [Abstract] Other Financial Information [Abstract] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation, depletion and amortization Depreciation, depletion and amortization Depreciation, Depletion and Amortization Fair Value as of Grant Date Award Grant Date Fair Value Before reclassifications to income Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Level 2 Fair Value, Inputs, Level 2 [Member] Financing Arrangements and Debt Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Geographical [Domain] Geographical [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Other Locations Other Than Us Ca And My [Member] Locations Other Than US CA And MY [Member] Other Other Countries Segment [Member] Other Countries Segment Asset Retirement Obligation Disclosure [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date: Restatement Determination Date [Axis] Performance-based RSUs (ROACE) Return On Average Capital Employed Performance Based Restricted Stock Units [Member] Return On Average Capital Employed Performance Based Restricted Stock Units Title of 12(b) Security Title of 12(b) Security Common Stock, par $1.00, authorized 450,000,000 shares, issued 195,100,628 shares in 2025 and 195,100,628 shares in 2024 Common Stock, Value, Issued Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Balance at beginning of year Balance at end of period Balance at end of period Asset Retirement Obligation Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value 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] Reclassifications, income tax expense Reclassification from AOCI, Current Period, Tax Gain on sales of assets and other operating income Gain (Loss) on Sale of Assets, Derivatives and Other Income Gain (Loss) on Sale of Assets, Derivatives and Other Income Schedule of Activity in Number of Shares of Common Stock Issued and Outstanding Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Financing Activities Net Cash Provided by (Used in) Financing Activities [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] Cumulative Preferred Stock, par $100, authorized 400,000 shares, none issued Preferred Stock, Value, Issued 2020 Long-Term Plan Long Term Incentive Plan Twenty Twenty [Member] 2020 Long-Term Plan [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Net income (in USD per share) Earnings Per Share, Basic Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Finance lease obligation payments Finance Lease, Principal Payments Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net Oil Pay, Feet Net Oil Pay, Feet Per Reservoir Net Oil Pay, Feet Per Reservoir Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current 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] Canada - Onshore Canada Onshore [Member] Canada Onshore [Member] Total assets Total assets at quarter-end Assets Costs of purchased natural gas Costs of purchased natural gas Cost of Goods and Services Sold Average forward price (in dollars per barrel) Derivative, Swap Type, Average Fixed Price Amount outstanding Long-Term Line of Credit Number of geographic segments (in segments) Number of Geographic Segments Number of Geographic Segments Grants in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Deferred credits and other liabilities Other Liabilities, Noncurrent Aging of Capitalized Exploratory Well Costs [Axis] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Schedule of Effective Income Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Termination Date Trading Arrangement Termination Date 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] Total revenues and other income Revenues Incentive Plans Share-Based Payment Arrangement [Text Block] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Consideration transferred Asset Acquisition, Consideration Transferred Entity Address, City or Town Entity Address, City or Town Number of offsetting positions (in offsetting positions) Number Of Offsetting Positions Number Of Offsetting Positions Compensation charged against income before tax benefit Share-Based Payment Arrangement, Expense NET INCOME ATTRIBUTABLE TO MURPHY Net income attributable to Murphy and noncontrolling interest Net Income (Loss) Attributable to Parent Other operating expense Other Operating Income (Expense), Net Trading Arrangement: Trading Arrangement [Axis] Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] 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] (Increase) decrease in capital expenditure accrual Increase (Decrease) In Capital Expenditure Accrual Increase (Decrease) In Capital Expenditure Accrual Entity File Number Entity File Number Well costs Beginning balance Ending balance Amount Oil and Gas, Capitalized Exploratory Well Cost Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Noncontrolling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Repurchase of common stock Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Number of foreign currency derivatives (in contracts) Number of Foreign Currency Derivatives Held Fair Value Assets, Fair Value Disclosure Other accrued liabilities Other Accrued Liabilities, Current Name Forgone Recovery, Individual Name Award Date [Domain] Award Date [Domain] Document Period End Date Document Period End Date Canada Canada Segment [Member] Canada Segment Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] March 31, 2025 March 31, 2025 [Member] March 31, 2025 Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Asset Class [Axis] Asset Class [Axis] Insider Trading Arrangements [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Adjustment to Compensation: Adjustment to Compensation [Axis] Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Depreciation, depletion and amortization Depreciation, Depletion and Amortization, Adjustment Depreciation, Depletion and Amortization, Adjustment Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Transportation, gathering and processing Transportation, gathering and processing Transportation, Gathering and Processing Costs Transportation, Gathering and Processing Costs Retirement and postretirement benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Contracts to sell natural gas at USD index pricing Usd Index Pricing [Member] USD Index Pricing [Member] Long-term non-cash compensation Employee Benefit and Share-Based Payment Arrangement, Noncash Asset Acquisition [Domain] Asset Acquisition [Domain] Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments Carrying Value And Fair Value Of Financial Instruments Disclosure [Table Text Block] Carrying Value and Fair Value of Financial Instruments Disclosure. Basic (in shares) Basic method (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Total equity Balance at beginning of period Balance at end of period Equity, Including Portion Attributable to Noncontrolling Interest RSUs Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Net Book Value Prior to Impairment Oil and Gas Property, Net, Prior to Impairment Oil and Gas Property, Net, Prior to Impairment Name Awards Close in Time to MNPI Disclosures, Individual Name Contract with Customer, Duration [Axis] Contract with Customer, Duration [Axis] Time-based RSUs (Stock-Settled) Time Based Restricted Stock Units [Member] Time-Based Restricted Stock Units [Member] Entity Filer Category Entity Filer Category Letter of Credit Letter of Credit [Member] Company Selected Measure Name Company Selected Measure Name