Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Debt Long-Term Debt, Unclassified [Abstract] Weighted-average common shares outstanding Denominator for Diluted EPS Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Schedule of Other Noncurrent Assets Schedule of Other Assets, Noncurrent [Table Text Block] Other revenues and income Other Revenue And Income Other Revenue And Income Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Net Fair Value Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Netting Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Total derivatives Derivative Assets (Liabilities), at Fair Value, Net Net loss (gain) from natural gas purchase derivatives Net loss (gain) from natural gas purchase derivatives Derivative, Gain (Loss) On Natural Gas Purchase Derivatives Derivative, Gain (Loss) On Natural Gas Purchase Derivatives Contributions to the Carbon TerraVault JV Noncash Investing Activities, Capital Call Related To Equity Method Investment Noncash Investing Activities, Capital Call Related To Equity Method Investment Adjustment to Compensation, Amount Adjustment to Compensation Amount Offshore platforms with decommissioning obligations defaulted period since interest sold (in years) Off shore Platforms With Decommissioning Obligations Defaulted Period Since Interest Sold Off shore Platforms With Decommissioning Obligations Defaulted Period Since Interest Sold Stock-based compensation Business Combination, Consideration Transferred, Share-Based Payment Arrangement Business Combination, Consideration Transferred, Share-Based Payment Arrangement Purchased Puts - Crude Oil 2H 2027 Purchased Puts - Crude Oil 2H 2027 [Member] Purchased Puts - Crude Oil 2H 2027 Segment Reporting [Abstract] Common stock (200,000,000 shares authorized at $0.01 par value) (110,930,138 and 110,645,691 shares issued; 88,819,893 and 88,754,165 shares outstanding at June 30, 2026 and December 31, 2025) Common Stock, Value, Issued Non-cash (gain) loss from natural gas purchase derivatives Unrealized Gain (Loss) On Natural Gas Purchase Derivatives, Portion Attributable To Parent Unrealized Gain (Loss) On Natural Gas Purchase Derivatives, Portion Attributable To Parent Shares cancelled for taxes Payment, Tax Withholding, Share-Based Payment Arrangement Compensation-related liabilities Employee-related Liabilities, Current Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Other Other Assets, Miscellaneous, Noncurrent PENSION AND POSTRETIREMENT BENEFIT PLANS Retirement Benefits [Text Block] Transaction and integration costs Business Combination, 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Provisional Information, Initial Accounting Incomplete, Adjustment, Fair Value Of Derivative Contracts EPS Earnings Per Shares Basic and Diluted [Abstract] Earnings Per Shares Basic and Diluted Oxy Occidental Petroleum Corporation [Member] Occidental Petroleum Corporation Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Property, plant and equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Consolidated Entities [Domain] Consolidated Entities [Domain] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] NONCURRENT LIABILITIES Liabilities, Noncurrent [Abstract] 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of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Recently Issued but not Adopted Accounting and Disclosure Changes New Accounting Pronouncements, Policy [Policy Text Block] Swaps - Crude Oil 2H 2027 Swaps - Crude Oil 2H 2027 [Member] Swaps - Crude Oil 2H 2027 Effective income tax rate reconciliation, annual, percent Effective Income Tax Rate Reconciliation, Annual, Percent Effective Income Tax Rate Reconciliation, Annual, Percent Related Party, Type [Axis] Related and Nonrelated Parties [Axis] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Business Combination, Goodwill, Reportable Segment Assignment [Line Items] Business Combination, Goodwill, Reportable Segment Assignment [Line Items] Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Repayments of Revolving Credit Facility Repayments of Lines of Credit Less: Segment Reporting, Reconciliation [Abstract] Period Two Debt Instrument, Redemption, Period Two [Member] 2026 Senior Notes 2026 Senior Notes [Member] 2026 Senior Notes Document Period End Date Document Period End Date Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Signal Hill offshore platform expense accrual Accrual For Platform Expense Accrual For Platform Expense Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Initial investment amount Debt Instrument, Face Amount STOCKHOLDERS' EQUITY Equity [Text Block] Security Exchange Name Security Exchange Name Schedule of Reconciliation of Revenue from Segments to Consolidated Segment Reporting, Reconciliation of Revenue by Segment to Consolidated [Table Text Block] Treasury stock (22,110,245 shares held 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End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Adjustments, Net Assets Acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Denominator for Basic EPS Weighted Average Number of Shares Outstanding, Basic [Abstract] Business Combination, Recognized Asset Acquired and Liability Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Company Selected Measure Name Company Selected Measure Name Carbon Management Carbon Management Carbon Management Segment [Member] Carbon Management Segment Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Principal amount Long-Term Debt, Gross Energy operating costs Oil And Gas, Production Cost, Energy Operating Costs Oil And Gas, Production Cost, Energy Operating Costs Credit Facility [Domain] Credit Facility [Domain] CASH FLOW FROM OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable from affiliate Receivable from affiliate Other Receivables, Net, Current Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted-average shares, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Funded pension Defined Benefit Plan, Funded Pension, Noncurrent Defined Benefit Plan, Funded Pension, Noncurrent Disaggregation of revenue Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Other Current Assets, Net Schedule of Other Current Assets [Table Text Block] Net Assets Acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Barrels per day (in barrels) Derivative, Nonmonetary Notional Amount, Volume Underlying Security Market Price Change Underlying Security Market Price Change, Percent Sold Calls - Crude Oil Q3 2026 Sold Calls - Crude Oil Q3 2026 [Member] Sold Calls - Crude Oil Q3 2026 Proceeds from Revolving Credit Facility Proceeds from Lines of Credit Total property, plant and equipment, net Total property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Swaps - Crude Oil Q4 2026 Swaps - Crude Oil Q4 2026 [Member] Swaps - Crude Oil Q4 2026 California Geologic Energy Management Division California Geologic Energy Management Division [Member] California Geologic Energy Management Division Changes in accrued capital investments Increase Decrease In Capital Investment Accrual Represents the information pertaining to changes in capital investment accruals Period Six Debt Instrument, Redemption, Period Six [Member] Debt Instrument, Redemption, Period Six Gross Amounts at Fair Value Derivative Liability, Subject to Master Netting Arrangement, before Offset Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization NWPL Rockies - Natural Gas Q4 2026 NWPL Rockies - Natural Gas Q4 2026 [Member] NWPL Rockies - Natural Gas Q4 2026 Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Severance and termination costs Severance Costs Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Fair value of commodity derivative contracts Derivative Asset, Noncurrent Sold Calls - Crude Oil Q4 2026 Sold Calls - Crude Oil Q4 2026 [Member] Sold Calls - Crude Oil Q4 2026 Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis spread on variable rate, incremental reduction Debt Instrument, Basis Spread On Variable Rate, Incremental Reduction Debt Instrument, Basis Spread On Variable Rate, Incremental Reduction Litigation Status [Domain] Litigation Status [Domain] Asset retirement obligation, liabilities incurred Asset Retirement Obligation, Liabilities Incurred Restricted/Performance stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Total Reportable Segments Reportable Segment [Member] Reportable 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Instrument, Name [Domain] Debt Instrument, Name [Domain] NWPL Rockies - Natural Gas Q3 2026 NWPL Rockies - Natural Gas Q3 2026 [Member] NWPL Rockies - Natural Gas Q3 2026 SEGMENT INFORMATION Segment Reporting [Text Block] Minimum Minimum [Member] Common stock dividends Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Schedule of Disaggregated Revenue Disaggregation of Revenue [Table Text Block] Basis spread on variable rate, reduction Debt Instrument, Basis Spread On Variable Rate, Reduction Debt Instrument, Basis Spread On Variable Rate, Reduction Asset retirement obligations Business Combination, Recognized Liability Assumed, Noncurrent Liabilities, Asset Retirement Obligations Business Combination, Recognized Liability Assumed, Noncurrent Liabilities, Asset Retirement Obligations Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] NWPL Rockies - Natural Gas 2028 NWPL Rockies - Natural Gas 2028 [Member] NWPL Rockies - Natural Gas 2028 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] Withholding tax on the Stock Repurchase Noncash Financing Activities, Withholding Tax On Stock Repurchase Noncash Financing Activities, Withholding Tax On Stock Repurchase Purchased Puts - Crude Oil Q2 2027 Purchased Puts - Crude Oil Q2 2027 [Member] Purchased Puts - Crude Oil Q2 2027 Settlement of Berry debt Business Combination, Consideration Transferred, Liabilities Incurred Business Combination [Line Items] Business Combination [Line Items] Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Issuance of common stock Proceeds from Issuance of Common Stock Swaps - Crude Oil 2028 Swaps - Crude Oil 2028 [Member] Swaps - Crude Oil 2028 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Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Write off of deferred debt issuance cost Deferred Debt Issuance Cost, Writeoff Other noncurrent assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Postretirement plan Assets for Plan Benefits, Defined Benefit Plan Fair Value of Derivatives Offsetting Assets [Line Items] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Adjustments, Cash Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash And Cash Equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Period Adjustments, Cash Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Interest income Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Deferred income tax (benefit) provision Deferred income tax (benefit) provision Deferred Income Tax Expense (Benefit) General and administrative expenses Selling, General and Administrative Expense Sold Calls - Crude Oil 2H 2027 Sold Calls - Crude Oil 2H 2027 [Member] Sold Calls - Crude Oil 2H 2027 Repayments of debt Repayments of Debt Fair value of derivative contracts Business Combination, Recognized Liability Assumed, Noncurrent Liabilities, Fair Value Of Derivative Contracts Business Combination, Recognized Liability Assumed, Noncurrent Liabilities, Fair Value Of Derivative Contracts Allowances of credit losses Allowance For Credit Loss, Due From Joint Ventures Allowance For Credit Loss, Due From Joint Ventures Average Price Paid per Share (in dollar per share) Shares Acquired, Average Cost Per Share, Excluding Excise Tax Adjustment Shares Acquired, 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financing costs - Revolving Credit Facility Debt Issuance Costs, Noncurrent, Net Net periodic benefit costs: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Purchased Puts - Crude Oil 2027 Purchased Puts - Crude Oil Q1 2027 [Member] Purchased Puts - Crude Oil Q1 2027 Additional paid-in capital Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Equity [Abstract] Equity [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] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments for legal settlements Payments for Legal Settlements Adjustment to the preliminary purchase price allocation Equity Method Investment, Preliminary Purchase Price Allocation, Measurement Period Adjustment Equity Method Investment, Preliminary Purchase Price Allocation, Measurement Period Adjustment Other Stockholders' Equity, Other Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Investment, Name [Axis] Investment, Name [Axis] OPERATING EXPENSES Operating Expenses [Abstract] DEFERRED TAX ASSETS Deferred tax asset Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Diluted (in dollars per share) Business Combination, Pro Forma Information, Pro Forma Earnings Per Share, Diluted Contingent liability Equity Method Investments, Contingent Liabilities, Noncurrent Equity Method Investments, Contingent Liabilities, Noncurrent Interest rate added to variable rate basis Debt Instrument, Basis Spread on Variable Rate Other current assets Business Combination, Recognized Asset Acquired, Other Asset, Current CONDENSED CONSOLIDATING FINANCIAL INFORMATION Condensed Financial Statements [Text Block] City Area Code City Area Code Variable Rate [Domain] Variable Rate [Domain] Settlements and premiums due on commodity derivative contracts Settlements And Premiums Due On Derivative Contracts, Current Settlements And Premiums Due On Derivative Contracts, Current Period One Debt Instrument, Redemption, Period One [Member] Number of offshore platforms with decommissioning obligations defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] PROPERTY, PLANT AND EQUIPMENT Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization All Individuals All Individuals [Member] SUBSEQUENT EVENTS Subsequent Events [Text Block] Emission reduction credits Emission Reduction Credits, Noncurrent Emission Reduction Credits, Noncurrent Total Dividend Payments of Dividends Postretirement and pension benefit plans Liability, Defined Benefit Pension Plan, Noncurrent Name Forgone Recovery, Individual Name Other Other Accrued Liabilities, Noncurrent Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Dividend equivalents for stock-based compensation awards Dividends Equivalents For Stock-Based Compensation Awards Dividends Equivalents For Stock-Based Compensation Awards Fair value of share consideration Business Combination, Consideration Transferred, Equity Interest Statement [Line Items] Statement [Line Items] TOTAL ASSETS Assets Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] MMBtu per day (in millions of BTU) Derivative, Nonmonetary Notional Amount, Energy Measure Entity [Domain] Entity [Domain] NWPL Rockies - Natural Gas Q2 2027 NWPL Rockies - Natural 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Debt issuance costs Payments of Debt Issuance Costs Oil Oil and Condensate [Member] Diluted (in dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount SoCal Border - Natural Gas Q3 2026 SoCal Border - Natural Gas Q3 2026 [Member] SoCal Border - Natural Gas Q3 2026 Net changes in operating assets and liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital Shares cancelled for taxes Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Adjustments, Accrued liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Liabilities Schedule of Merger Consideration and Preliminary Purchase Price Allocation Business Combination [Table Text Block] EPS Business Acquisition, Pro Forma Earnings Per Share [Abstract] Business Acquisition, Pro Forma Earnings Per Share Ownership [Domain] Ownership [Domain] Basic (in dollars per share) Business Combination, Pro Forma Information, Pro Forma Earnings Per Share, Basic Schedule of Business Acquisition, Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Midway Sunset Cogeneration Company Midway Sunset Cogeneration Company [Member] Midway Sunset Cogeneration Company Total Assets Acquired Business Combination, Recognized Asset Acquired, Asset Compensation-related liabilities Deferred Compensation Liability, Classified, Noncurrent CASH FLOW FROM FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Oil, natural gas and natural gas liquids sales Oil, natural gas and natural gas liquids sales Revenue from Contract with Customer, Excluding Assessed Tax Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Period Three Debt Instrument, Redemption, Period Three [Member] Interest cost on projected benefit obligation Defined Benefit Plan, Interest Cost Non-energy operating costs Oil and Gas, Production Cost, Non-Energy Operating Costs Oil and Gas, Production Cost, Non-Energy Operating Costs Schedule of Equity Method Investment Unconsolidated Subsidiary Equity Method Investments [Table Text Block] Brookfield BGTF Sierra Aggregator LLC [Member] BGTF Sierra Aggregator LLC Net Fair Value Derivative Asset Remaining repurchase amount Debt Instrument, Remaining Repurchase Amount Debt Instrument, Remaining Repurchase Amount Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Gross Amounts at Fair Value Estimate of Fair Value Measurement [Member] Issuance of common stock Stock Issued During Period, Value, New Issues Prepaid expenses Prepaid Expense, Current Redemption of Senior Notes Early Repayment of Senior Debt Adjustments, Total Liabilities Assumed Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liability Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liability Common stock issued in connection with acquisition (in shares) Shares of common stock (in shares) Stock Issued During Period, Shares, Acquisitions Other, net Payment for (Proceeds from) Other Investing Activity Sold Calls - Crude Oil 2027 Sold Calls - Crude Oil Q1 2027 [Member] Sold Calls - Crude Oil Q1 2027 Issuance of shares for stock-based compensation awards Stock Issued Segment Reporting [Table] Segment Reporting [Table] Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Other current assets, net Other current assets, net Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Amounts due to (from) affiliates Other Liabilities (Other Assets) Other Liabilities (Other Assets) Net (gain) loss from commodity derivatives Derivative, Gain (Loss) on Derivative, Net Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] OPERATING INCOME (LOSS) Segment profit or (loss) Operating Income (Loss) Period Four Debt Instrument, Redemption, Period Four [Member] Schedule of Dividends Declared Dividends Declared [Table Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Proceeds from issuance of debt Proceeds from Issuance of Debt Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Combined Restricted Subsidiaries Combined Restricted Subsidiaries, Consolidating [Member] Combined Restricted Subsidiaries, Consolidating BUSINESS COMBINATIONS Business Combination [Text Block] Released funds exceeding percentage Business Combination, Restricted Cash, Cumulative Abandonment And Habitat Restoration Expenditures, Percentage Business Combination, Restricted Cash, Cumulative Abandonment And Habitat Restoration Expenditures, Percentage California resources corporation California Resources Corporation [Member] California Resources Corporation 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] Rate per share (in dollars per share) Dividends declared, common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service cost - benefits earned during the period Defined Benefit Plan, Service Cost SUPPLEMENTAL ACCOUNT BALANCES Supplemental Information [Text Block] Supplemental Information Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock, issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] INVESTMENT IN UNCONSOLIDATED SUBSIDIARIES AND RELATED PARTY TRANSACTIONS Equity Method Investments and Joint Ventures Disclosure [Text Block] Finished goods Inventory, Finished Goods, Gross Net settlements and premiums Gain (Loss) on Sale of Commodity Contracts Treasury stock (in shares) Treasury Stock, Common, Shares Asset retirement obligations Asset retirement obligations Asset Retirement Obligations, Noncurrent OTHER INFORMATION SUPPLEMENTAL INFORMATION [Abstract] Supplemental Information Corporate/Eliminations/Other Corporate and Other Corporate And Eliminations [Member] Corporate And Eliminations All other Other Cost and Expense, Operating Equity Components [Axis] Equity Components [Axis] Debt instrument, repurchase amount Debt Instrument, Repurchase Amount Related Party Related Party [Member] Products and Services [Domain] Product and Service [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Adjustments, Fair value of derivative contracts Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Fair Value Of Derivative Contracts Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Fair Value Of Derivative Contracts Entity Interactive Data Current Entity Interactive Data Current Materials and supplies Other Inventory, Supplies, Gross Variable Rate [Axis] Variable Rate [Axis] Deferred tax liabilities Deferred tax liability Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] SoCal Border - Natural Gas Q2 2027 SoCal Border - Natural Gas Q2 2027 [Member] SoCal Border - Natural Gas Q2 2027 Entity Small Business Entity Small Business Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent NWPL Rockies - Natural Gas 2H 2027 NWPL Rockies - Natural Gas 2H 2027 [Member] NWPL Rockies - Natural Gas 2H 2027 Contribution from noncontrolling interest Equity Method Investment, Initial Investment Contribution, Amount Equity Method Investment, Initial Investment Contribution, Amount Termination Date Trading Arrangement Termination Date 2034 Senior Notes 2034 Senior Notes [Member] 2034 Senior Notes Electricity revenue Sale Of Electricity [Member] This member represents electricity sales. Decrease in inventories Adjustments, Inventories Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory Subsequent Events [Abstract] Subsequent Events [Abstract] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] OTHER NONCURRENT ASSETS Other noncurrent assets Other assets Other Assets, Noncurrent Document Type Document Type Repurchase face amount Debt Instrument, Repurchased Face Amount Fair value of commodity derivative contracts Derivative Asset, Current Loss on early extinguishment of debt Net loss on early extinguishment of debt Loss on early extinguishment of debt Gain (Loss) on Extinguishment of Debt Accrued liabilities Accrued liabilities Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Redemption price Debt Instrument, Redemption Price, Percentage 2029 Senior Notes 2029 Senior Notes 2029 Senior Notes [Member] 2029 Senior Notes Common stock issued in connection with merger (in shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number Of Shares, Conversion Ratio Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number Of Shares, Conversion Ratio Natural gas liquids Propane [Member] Other Other Assets, Miscellaneous, Current Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase program, remaining authorized, amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Net amounts due from joint interest partners Accounts Receivable, After Allowance For Credit Loss, Due From Joint Venture, Current Accounts Receivable, After Allowance For Credit Loss, Due From Joint Venture, Current Local Phone Number Local Phone Number Sold Calls - Crude Oil 2028 Sold Calls - Crude Oil 2028 [Member] Sold Calls - Crude Oil 2028 Postretirement Benefit Other Postretirement Benefits Plan [Member] Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Acquisitions Payments to Acquire Other Productive Assets Adjustments, Other long-term liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Liability, Noncurrent Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Liability, Noncurrent INCOME (LOSS) BEFORE INCOME TAXES Income (loss) before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Schedule of Other Long-term Liabilities Other Noncurrent Liabilities [Table Text Block] Total operating revenues Total operating revenues Segment operating revenues Revenues Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Adjustments, Total Assets Acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Asset Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Asset Equity loss from unconsolidated subsidiaries Equity loss from unconsolidated subsidiaries Net (loss) income Income (Loss) from Equity Method Investments Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Net settlements from commodity derivatives Payments (Proceeds) On Derivative Settlements The net payments (proceeds) on derivative settlements, which increase (reduce) net income and are thus added (deducted) when calculating cash provided by or used in operating activities. Deferred tax asset Business Combination, Recognized Asset Acquired, Deferred Tax Asset Executive Category: Executive Category [Axis] SoCal Border - Natural Gas 2028 SoCal Border - Natural Gas 2028 [Member] SoCal Border - Natural Gas 2028 Purchased Puts - Crude Oil Q3 2026 Purchased Puts - Crude Oil Q3 2026 [Member] Purchased Puts - Crude Oil Q3 2026 Aera Energy, LLC Aera Energy, LLC [Member] Aera Energy, LLC Other Commitments [Table] Other Commitments [Table] Inventory Inventory Inventory, Net All Award Types Award Type [Domain] Performance stock units Shares issuable upon settlement of PSUs Performance Stock Units [Member] Performance Stock Units Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Adjustments, Other current assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Asset, Current Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Asset, Current Total Number of Shares Purchased (in shares) Treasury Stock, Shares, Acquired Debt instrument, redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed PEO Name PEO Name Restricted cash Restricted Cash Income taxes paid Income Tax Paid, before Refund Received Other segment expenses Segment Reporting, Other Segment Item, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Fixed rate debt Long-Term Debt, Percentage Bearing Fixed Interest, Amount Legal Entity [Axis] Legal Entity [Axis] Assets Acquired Business Combination, Recognized Asset Acquired, Asset [Abstract] Other Commitments [Line Items] Other Commitments [Line Items] Repurchases of common stock Total Value of Shares Purchased Treasury Stock, Value, Acquired, Cost Method Purchased Puts - Crude Oil 2028 Purchased Puts - Crude Oil 2028 [Member] Purchased Puts - Crude Oil 2028 Cash and cash equivalents—beginning of period Cash and cash equivalents—end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [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] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Interest in joint venture Equity Method Investment, Ownership Percentage Other long-term liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Cost incurred, abandonment cost Oil and Gas, Cost Incurred, Asset Retirement Obligation Decommissioning liability, current Decommissioning Liability, Current Decommissioning Liability, Current Investment, Name [Domain] Investment, Name [Domain] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Schedule of Fair Value of Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Swaps - Crude Oil Q3 2026 Swaps - Crude Oil Q3 2026 [Member] Swaps - Crude Oil Q3 2026 Advanced payments Contract with Customer, Liability, Current Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt, net Long-term debt, net Long-term debt Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trade receivables Accounts Receivable, after Allowance for Credit Loss, Current Schedule of Shares Repurchased Class of Treasury Stock [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) ABR Applicable Margin ABR Applicable Margin [Member] ABR Applicable Margin Commodity Contracts Commodity Contract [Member] Product and Service [Axis] Product and Service [Axis] 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Benefit Pension Plan [Member] Common Stock Common stock Common Stock [Member] Offshore platforms with decommissioning obligations defaulted percentage Offshore Platforms With Decommissioning Obligations Defaulted, Ownership Percent Offshore Platforms With Decommissioning Obligations Defaulted, Ownership Percent Fair Value Measurement [Domain] Fair Value Measurement [Domain] Litigation and settlement related expenses Litigation Settlement, Fee Expense Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] Cover [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity Fair value of derivative contracts Fair value of derivative contracts Derivative Liability, Noncurrent Employee Stock Option Share-Based Payment Arrangement, Option [Member] Equity method investments, distributed to satisfy future capital calls Equity Method Investments, Amounts That May Be Distributed To Satisfy Future Capital Calls Equity Method Investments, Amounts That May Be Distributed To Satisfy Future Capital Calls Asset retirement obligations - current portion Asset Retirement Obligation, Current Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Proceeds from Senior Notes, net Proceeds from Issuance of Senior Long-Term Debt Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Gas processing costs Oil and Gas, Production Cost, Gas Processing Costs Oil and Gas, Production Cost, Gas Processing Costs Tabular List, Table Tabular List [Table Text Block] Amortization of prior service cost credit included in net periodic benefit cost, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Interest and debt expense, net Interest And Debt Expense, Net Interest And Debt Expense, Net Revenue from marketing of purchased commodities Costs related to marketing of purchased commodities Marketing of Purchased Commodities [Member] Marketing of Purchased Commodities Other non-operating income, net Other non-operating income Other Nonoperating Income (Expense) DEBT Long-Term Debt [Text Block] Income tax receivable Income Taxes Receivable, Current Other operating expenses, net Other operating expenses, net Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name STOCKHOLDERS' EQUITY Equity, Including Portion Attributable to Noncontrolling Interest [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] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized 2035 Senior Notes 2035 Senior Notes [Member] 2035 Senior Notes Operating costs Oil and Gas, Production Cost, Period Cost Preferred stock (20,000,000 shares authorized at $0.01 par value) no shares outstanding at June 30, 2026 and December 31, 2025 Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Oil and Natural Gas Oil and Natural Gas Oil And Natural Gas Segment [Member] Oil And Natural Gas Segment Hedging Designation [Axis] Hedging Designation [Axis] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Exploration expense Exploration Expense Natural gas Natural Gas, Production [Member] Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Payable to affiliate Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Other non-cash charges to income, net Other Noncash Income (Expense) Debt instrument Debt Instrument [Line Items] Carbon TerraVault JV Carbon TerraVault Joint Venture [Member] Carbon TerraVault Joint Venture Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Settlements Gain (Loss) on Sale of Derivatives Total consideration Total consideration Business Combination, Consideration Transferred Retirement Plan Type [Domain] Retirement Plan Type [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Swaps - Crude Oil Q2 2027 Swaps - Crude Oil Q2 2027 [Member] Swaps - Crude Oil Q2 2027 Other revenue Revenue Not from Contract with Customer Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Business acquisition, percentage of ownership after transaction Business Acquisition, Percentage Of Ownership After Transaction Business Acquisition, Percentage Of Ownership After Transaction Number of oil and gas wells abandoned Number Of Oil And Gas Wells Abandoned Number Of Oil And Gas Wells Abandoned Adjustments, Accounts payable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable, Current Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable, Current Supplemental disclosure of non-cash investing and financing activities Supplemental Disclosure of Non-cash Investing and Financing Activities [Abstract] Supplemental Disclosure of Non-cash Investing and Financing Activities Net gain (loss) from commodity sales derivatives Net gain (loss) from commodity sales derivatives Gain (Loss) on Derivative Instruments, Net, Pretax Company Selected Measure Amount Company Selected Measure Amount Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Depreciation, depletion and amortization Depreciation, depletion and amortization Depreciation, Depletion and Amortization SOFR Secured Overnight Financing Rate (SOFR) [Member] Swaps - Crude Oil 2027 Swaps - Crude Oil Q1 2027 [Member] Swaps - Crude Oil Q1 2027 Entity Address, Address Line Two Entity Address, Address Line Two Common stock per share fair value (in dollars per share) Business Combination, Price Per Share CURRENT ASSETS Assets, Current [Abstract] Net Fair Value Derivative Liability SoCal Border - Natural Gas 2H 2027 SoCal Border - Natural Gas 2H 2027 [Member] SoCal Border - Natural Gas 2H 2027 Total operating revenue Business Combination, Pro Forma Information, Pro Forma Revenue Non-PEO NEO Non-PEO NEO [Member] Senior Notes (Unsecured) Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax benefit (provision) Income tax (benefit) provision Income Tax Expense (Benefit) Contributions (distributions) Payments To Acquire (Proceeds From) Equity Method Investments Payments To Acquire (Proceeds From) Equity Method Investments Potential common shares, if dilutive: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] SoCal Border - Natural Gas Q4 2026 SoCal Border - Natural Gas Q4 2026 [Member] SoCal Border - Natural Gas Q4 2026 Costs of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Other revenue Product and Service, Other [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accretion expense Accretion Expense Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Adjustments, Accounts receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Receivable, Current Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Receivable, Current NET INCOME (LOSS) Net income (loss) Net income (loss) Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Berry merger Berry Merger [Member] Berry Merger Statement [Table] Statement [Table] Adjustments, Asset retirement obligations Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Asset Retirement Obligations Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Asset Retirement Obligations Restatement Determination Date: Restatement Determination Date [Axis] Unamortized premium Debt Instrument, Unamortized Premium Liabilities Assumed Business Combination, Recognized Liability Assumed, Liability [Abstract] Derivatives Derivative Instruments and Hedging Activities Disclosures [Line Items] Gross Amounts at Fair Value Derivative Asset, Subject to Master Netting Arrangement, before Offset Increase in property, plant and equipment, net Adjustments, Property, plant and equipment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment REVENUES Revenues [Abstract] Pending receivable Loss Contingency, Damages Sought, Value Weighted-average price per barrel (in dollars per barrel) Underlying, Derivative Volume Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]