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benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Level 1 Fair Value, Inputs, Level 1 [Member] Amount outstanding Long-Term Line of Credit Operations and maintenance services, term of contract Operations And Maintenance Services, Term Of Contract Operations And Maintenance Services, Term Of Contract Nonqualified employee savings plan Obligations, Fair Value Disclosure Net income (in USD per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] 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] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Expected benefit plan contributions to be made during the year Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year Revenue from production Revenue from Contract with Customer, Excluding Assessed Tax And Discontinued Operations Revenue from Contract with Customer, Excluding Assessed Tax And Discontinued Operations Treasury stock, shares (in shares) Treasury Stock, Common, Shares Earnings Per Share [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Total other income (loss) Nonoperating Income (Expense) Income (loss) from discontinued operations, net of income taxes (Income) loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest (Increase) decrease in prepaid expenses Increase (Decrease) in Prepaid Expense Two to three years Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging, Period Three [Member] Eagle Ford Shale Eagle Ford Shale [Member] Eagle Ford Shale Other Financial Information [Abstract] Other Financial Information [Abstract] Other Financial Information [Abstract] Estimated defined contribution provision Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment Treasury shares purchased (in shares) Treasury Stock, Shares, Acquired Net cash income taxes (refunded) paid Income Taxes Paid, Net Environmental and Other Contingencies Environmental Loss Contingency Disclosure [Text Block] Award Timing Disclosures [Line Items] Net natural gas liquids revenue Natural Gas Liquids (NGL) [Member] 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 Service cost Defined Benefit Plan, Service Cost Number of foreign currency derivatives (in contracts) Number of Foreign Currency Derivatives Held 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] Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Before reclassifications to income Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 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 Distributions to noncontrolling interest owners Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders NET INCOME ATTRIBUTABLE TO MURPHY Net income attributable to Murphy and noncontrolling interest Net Income (Loss) Attributable to Parent Gain on derivative instruments Gain (Loss) on Derivative Instruments, Net, Pretax Impairment of assets Impairment of assets Total Pretax Impairment Impairment, Oil and Gas, Property with Unproved and Proved Reserves Expiration Date Trading Arrangement Expiration Date Other accrued liabilities Other Accrued Liabilities, Current Schedule of Effective Income Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Property, plant and equipment, at cost less accumulated depreciation, depletion and amortization of $14,436,980 in 2025 and $13,811,539 in 2024 Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Cumulative preferred stock, authorized shares (in shares) Preferred Stock, Shares Authorized 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 Repurchase of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] (Increase) decrease in accounts receivable Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status 2020 Long-Term Plan Long Term Incentive Plan Twenty Twenty [Member] 2020 Long-Term Plan [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating income from continuing operations Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Share-Based Plans, Amounts Recognized in the Financial Statements Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Dry holes and previously suspended exploration costs Oil and Gas, Result of Operation, Dry Hole Cost Adjustment Oil and Gas, Result of Operation, Dry Hole Cost Adjustment 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] Asset retirement obligations Non-current portion of liability Asset Retirement Obligations, Noncurrent Long Term Incentive Plan Twenty Twenty Five Long Term Incentive Plan Twenty Twenty Five [Member] Long Term Incentive Plan Twenty Twenty Five Other operating expense (income) Other Operating Income (Expense), Net Net oil pay, feet Net Oil Pay, Feet Per Reservoir Net Oil Pay, Feet Per Reservoir Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Canada - Onshore Canada Onshore [Member] Canada Onshore [Member] Severance and ad valorem taxes Severance and ad valorem taxes Production Tax Expense 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] Number of geographic segments (in segments) Number Of Geographic Segments Number Of Geographic Segments Retirement Plan Type [Axis] Retirement Plan Type [Axis] Other income (loss) Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Derivative liability Derivative Liability Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Deferred income tax expense Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by continuing operations activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] June 30, 2025 June 30, 2025 [Member] June 30, 2025 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] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Related income tax benefit recognized in income Share-Based Payment Arrangement, Expense, Tax Benefit Maximum number of shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Other Postretirement Benefits Other Postretirement Benefits Plan [Member] Number of offsetting positions (in offsetting positions) Number Of Offsetting Positions Number Of Offsetting Positions Treasury stock Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Repair and maintenance Utilities Operating Expense, Maintenance Net cash required by 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] Measure: Measure [Axis] Daily production (in barrels per day) Oil and Gas, Delivery Commitment, Daily Production Awarded restricted stock, net of forfeitures Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Basic (in shares) Basic method (in shares) Weighted Average Number of Shares Outstanding, Basic Remaining available to repurchase Share Repurchase Program, Remaining Authorized, Amount Costs of purchased natural gas Costs of purchased natural gas Cost of Product and Service Sold (Increase) decrease in capital expenditure accrual Increase (Decrease) In Capital Expenditure Accrual Increase (Decrease) In Capital Expenditure Accrual Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Lease operating expenses Total lease operating expenses Operating Lease, Expense 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 Other income (loss) Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Costs and expenses Costs and Expenses [Abstract] Reclassifications, income tax expense Reclassification from AOCI, Current Period, Tax 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] Canada Canada Segment [Member] Canada Segment Supplementary disclosures: Segment Reporting Information, Additional Information [Abstract] Cash dividends paid Dividends, Cash March 31, 2025 March 31, 2025 [Member] March 31, 2025 Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share 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] Common stock, shares issued (in shares) Common Stock, Shares, Issued Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Schedule of Noncash Operating Working Capital (Increase) Decrease Cash Flow, Operating Capital [Table Text Block] Retirement and postretirement benefit plans, net of income taxes Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Interest expense, net Interest expense, net of capitalization Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Increase (decrease) in income taxes payable Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Exploratory well costs capitalized more than one year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year 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 Insider Trading Arrangements [Line Items] Depreciation, depletion and amortization Depreciation, Depletion and Amortization, Adjustment Depreciation, Depletion and Amortization, Adjustment Corporate, Other, and Discontinued Operations Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Total liabilities Liabilities Transportation, gathering and processing Transportation, gathering and processing Transportation, Gathering and Processing Costs Transportation, Gathering and Processing Costs Credit facility maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Capitalized exploratory well costs charged to expense Capitalized exploratory well costs charged to expense Oil and Gas, Capitalized Exploratory Well Cost, Charged to Expense Contracts to sell natural gas at USD index pricing Usd Index Pricing [Member] USD Index Pricing [Member] Treasury shares purchased (in shares) Stock Repurchased During Period, Shares Prepaid expenses Prepaid Expense, Current Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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. Asset Class [Domain] Asset Class [Domain] Interest rate Line of Credit Facility, Interest Rate During Period Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Net Book Value Prior to Impairment Oil and Gas Property, Net, Prior to Impairment Oil and Gas Property, Net, Prior to Impairment Cash and cash equivalents Cash and Cash Equivalent Time-based RSUs (Stock-Settled) Time Based Restricted Stock Units [Member] Time-Based Restricted Stock Units [Member] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive restricted stock units (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment