Other revenues and income Other Revenue And Income Other Revenue And Income Statistical Measurement [Domain] Statistical Measurement [Domain] Other current assets, net Other Current Assets [Member] Property, plant and equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment 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 Commodity Contracts Commodity Contract [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Net loss (gain) on natural gas purchase derivatives Net loss (gain) on natural gas purchase derivatives Derivative, Gain (Loss) On Natural Gas Purchase Derivatives Derivative, Gain (Loss) On Natural Gas Purchase Derivatives Award Timing Predetermined Award Timing Predetermined [Flag] 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 Interest paid, net of amounts capitalized Interest Incurred But Not Yet Paid, Excluding Capitalized Interest, Operating And Investing Activities Interest Incurred But Not Yet Paid, Excluding Capitalized Interest, Operating And Investing Activities Offshore platforms with decommissioning obligations defaulted period since interest sold Off shore Platforms With Decommissioning Obligations Defaulted Period Since Interest Sold Off shore Platforms With Decommissioning Obligations Defaulted Period Since Interest Sold Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Other noncurrent assets Other Noncurrent Assets [Member] Debt amendment costs Payments of Financing Costs Loss from investment in unconsolidated subsidiaries (Loss) income from investment in unconsolidated subsidiary Loss from investment in unconsolidated subsidiaries Income (Loss) from Equity Method Investments Non-cash gain on 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 Tabular List, Table Tabular List [Table Text Block] Schedule of Other Long-term Liabilities Other Noncurrent Liabilities [Table Text Block] Schedule of Dividends Declared Dividends Declared [Table Text Block] Unallocated amounts Income (Loss) From Unallocated Amounts Income (Loss) From Unallocated Amounts SOFR Secured Overnight Financing Rate (SOFR) [Member] Reimbursement for abandonment work Equity Method Investment, Reimbursement Amount Equity Method Investment, Reimbursement Amount Settlement of Aera debt Business Combination, Consideration Transferred, Liabilities Incurred IKAV IKAV [Member] IKAV Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Pension and other postretirement benefits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets, Pension And Other Postretirement Benefit Obligations Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets, Pension And Other Postretirement Benefit Obligations Other Other Assets, Miscellaneous, Current EPS Earnings Per Shares Basic and Diluted [Abstract] Earnings Per Shares Basic and Diluted Oxy Occidental Petroleum Corporation [Member] Occidental Petroleum Corporation Stock, Class of Stock [Table] Stock, Class of Stock [Table] Materials and supplies Other Inventory, Supplies, Gross Area of real estate property Area of Real Estate Property Current income tax provision Current Income Tax Expense (Benefit) Other Other Assets, Miscellaneous, Noncurrent Adjustment to Compensation, Amount Adjustment to Compensation Amount Pension Benefit Pension Plan [Member] Unamortized debt discount and issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Proceeds from asset divestitures Proceeds from Sale of Productive Assets Income taxes paid Income Taxes Paid Antidilutive Securities [Axis] Antidilutive Securities [Axis] Contributions Payments to Acquire Equity Method Investments Cash dividend Dividends, Common Stock, Cash Asset impairment Asset impairments Asset Impairment Charges Total stockholders' equity Beginning balance Ending balance Total equity Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Common stock, authorized shares (in shares) Common Stock, Shares Authorized Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Hedging Designation [Domain] Hedging Designation [Domain] Business Combination, Goodwill, Reportable Segment Assignment [Line Items] Business Combination, Goodwill, Reportable Segment Assignment [Line Items] CURRENT ASSETS Assets, Current [Abstract] TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity 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 connection with acquisition (in shares) Stock Issued During Period, Shares, Acquisitions Measurement period adjustments, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accretion Expense And Depreciation, Depletion And Amortization Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accretion Expense And Depreciation, Depletion And Amortization Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Debt Long-Term Debt, Unclassified [Abstract] Management Services Agreement Management Services Agreement [Member] Management Services Agreement Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt instrument Debt Instrument [Line Items] Treasury Stock Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Borrowing base Line Of Credit Facility, Borrowing Base Line Of Credit Facility, Borrowing Base Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Investments in consolidated subsidiaries Investments In Consolidated Affiliates Subsidiaries Associates And Joint Ventures Investments In Consolidated Affiliates Subsidiaries Associates And Joint Ventures Operating costs: Oil And Gas, Production Cost, Operating Costs [Abstract] Oil And Gas, Production Cost, Operating Costs AERA MERGER Business Combination [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Barrels per day (in barrels) Derivative, Nonmonetary Notional Amount, Volume INCOME (LOSS) BEFORE INCOME TAXES Income (loss) before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Dividend equivalents on equity-settled awards Dividend equivalents on equity-settled awards Payments On Share-Based Payment Arrangement, Cash Used To Settle Award Payments On Share-Based Payment Arrangement, Cash Used To Settle Award Equity Method Investments [Roll Forward] Equity Method Investments [Roll Forward] Equity Method Investments Debt instrument, redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Other long-term liabilities Other long-term liabilities Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Taxes other than on income Accrual for Taxes Other than Income Taxes, Current Other profit or loss Income (Loss) From Marketing Of Purchased Commodities And Sale Of Electricity Income (Loss) From Marketing Of Purchased Commodities And Sale Of Electricity Natural gas liquids Propane [Member] Equity method investment, difference between carrying amount and underlying equity Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Electricity generation expenses Electricity Generation Expenses [Member] Electricity Generation Expenses Current portion of long-term debt Less: Current maturities Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount Pension benefit plans contributed Defined Benefit Plan, Plan Assets, Contributions by Employer Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Measurement period adjustments, accounts receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets, Receivables Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets, Receivables Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Other Current Assets, Net Schedule of Other Current Assets [Table Text Block] Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Letters of Credit Letter of Credit [Member] Operating lease liability Operating Lease, Liability, Current Effective income tax rate reconciliation, annual, percent Effective Income Tax Rate Reconciliation, Annual, Percent Effective Income Tax Rate Reconciliation, Annual, Percent Class of Stock [Line Items] Class of Stock [Line Items] Deferred tax liabilities Deferred tax liability Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus Sold Calls - Crude Oil 2027 Sold Calls - Crude Oil 2027 [Member] Sold Calls - Crude Oil 2027 2026 Senior Notes 2026 Senior Notes [Member] 2026 Senior Notes Award Timing Method Award Timing Method [Text Block] Award Type Award Type [Axis] Parent Parent Company [Member] Total debt, net Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Schedule of Business Acquisition, Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] TOTAL ASSETS Assets Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Sold Calls - Crude Oil Q1 2026 Sold Calls - Crude Oil Q1 2026 [Member] Sold Calls - Crude Oil Q1 2026 Transportation costs Transportation Costs [Member] Transportation Costs Entity Address, City or Town Entity Address, City or Town CASH FLOW FROM OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Swaps - Crude Oil Q3 2025 Swaps - Crude Oil Q3 2025 [Member] Swaps - Crude Oil Q3 2025 Other segment expenses Segment Reporting, Other Segment Item, Amount Purchased Puts - Crude Oil Q3 2025 Purchased Puts - Crude Oil Q3 2025 [Member] Purchased Puts - Crude Oil Q3 2025 Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted stock units Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total purchase consideration Business Combination, Consideration Transferred NWPL Rockies - Natural Gas Q4 2025 NWPL Rockies - Natural Gas Q4 2025 [Member] NWPL Rockies - Natural Gas Q4 2025 Pension and other postretirement benefits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Noncurrent Liabilities, Pension And Other Postretirement Benefits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Noncurrent Liabilities, Pension And Other Postretirement Benefits Entity Emerging Growth Company Entity Emerging Growth Company Warrants Warrant [Member] Rate per share (in dollars per share) Dividends declared, common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair value of derivative contracts Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Noncurrent Liabilities, Fair Value Of Derivative Contracts Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Noncurrent Liabilities, Fair Value Of Derivative Contracts Total Assets Acquired Business Combination, Recognized Asset Acquired, Asset 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] Net (gain) loss from commodity derivatives Derivative, Gain (Loss) on Derivative, Net INVESTMENT IN UNCONSOLIDATED SUBSIDIARY Beginning balance Ending balance Investment in unconsolidated subsidiaries Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Related Party Related Party [Member] Common stock, outstanding shares (in shares) Common Stock, Shares, Outstanding Carbon Management Carbon Management Carbon Management Segment [Member] Carbon Management Segment PEO PEO [Member] Schedule of Disaggregated Revenue Disaggregation of Revenue [Table Text Block] Postretirement plan Assets for Plan Benefits, Defined Benefit Plan Proceeds from 2029 Senior Notes, net Proceeds from Issuance of Senior Long-Term Debt 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] Energy operating costs Oil And Gas, Production Cost, Energy Operating Costs Oil And Gas, Production Cost, Energy Operating Costs Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings Retained Earnings [Member] NWPL Rockies - Natural Gas 2H 2026 NWPL Rockies - Natural Gas 2H 2026 [Member] NWPL Rockies - Natural Gas 2H 2026 Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date 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 Income Statement [Abstract] Income Statement [Abstract] Funded pension Defined Benefit Plan, Funded Pension, Noncurrent Defined Benefit Plan, Funded Pension, Noncurrent Net Fair Value Derivative Asset Income tax (provision) benefit Income tax provision (benefit) Income tax provision (benefit) Income Tax Expense (Benefit) Interest rate added to variable rate basis Debt Instrument, Basis Spread on Variable Rate Withholding tax on IKAV stock repurchase (Note 10 Stockholders' Equity) Taxes Payable, Current Fair value of commodity derivative contracts Derivative Liability, Noncurrent Operating Segments Excluding Intersegment Elimination Operating Segments Excluding Intersegment Elimination [Member] Operating Segments Excluding Intersegment Elimination Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Credit Spread Adjustment Credit Spread Adjustment [Member] Credit Spread Adjustment Products and Services [Domain] Product and Service [Domain] 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 Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Business Combination [Table] Business Combination [Table] Other operating expenses Decommissioning Liability, Noncurrent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Acquisitions Payments to Acquire Other Productive Assets Actuarial gain associated with pension and postretirement plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Business Combination, Recognized Asset Acquired and Liability Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] DIVESTITURES AND ASSETS HELD FOR SALE Acquisitions And Divestitures [Text Block] Acquisitions And Divestitures Text Block Accrued liabilities Accrued liabilities Accrued Liabilities, Current Purchased Puts - Crude Oil Q1 2026 Purchased Puts - Crude Oil Q1 2026 [Member] Purchased Puts - Crude Oil Q1 2026 Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] NWPL Rockies - Natural Gas Q3 2025 NWPL Rockies - Natural Gas Q3 2025 [Member] NWPL Rockies - Natural Gas Q3 2025 CASH FLOW FROM INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Total Reportable Segments Reportable Segment [Member] Reportable Segment Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Subsequent Event Subsequent Event [Member] Other current assets Business Combination, Recognized Asset Acquired, Other Asset, Current Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Non-cash commodity derivative gain (loss) Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Parent Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Parent Swaps - Crude Oil 2027 Swaps - Crude Oil 2027 [Member] Swaps - Crude Oil 2027 Gross Amounts at Fair Value Derivative Liability, Subject to Master Netting Arrangement, before Offset Purchased Puts - Crude Oil Q2 2026 Purchased Puts - Crude Oil Q2 2026 [Member] Purchased Puts - Crude Oil Q2 2026 Assets Acquired Business Combination, Recognized Asset Acquired, Asset [Abstract] Denominator for Basic EPS Weighted Average Number of Shares Outstanding, Basic [Abstract] Equity Components [Axis] Equity Components [Axis] Postretirement and pension benefit plans Liability, Defined Benefit Pension Plan, Noncurrent Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Accretion expense Accretion Expense Number of reportable segments Number of Reportable Segments Inventories Business Combination, Recognized Asset Acquired, Inventory, Current Accounts receivable Business Combination, Recognized Asset Acquired, Receivable, Current Sold Calls - Crude Oil Q3 2025 Sold Calls - Crude Oil Q3 2025 [Member] Sold Calls - Crude Oil Q3 2025 Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] NWPL Rockies - Natural Gas 2028 NWPL Rockies - Natural Gas 2028 [Member] NWPL Rockies - Natural Gas 2028 Withholding tax on the Stock Repurchase Noncash Financing Activities, Withholding Tax On Stock Repurchase Noncash Financing Activities, Withholding Tax On Stock Repurchase Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Total current liabilities Liabilities, Current Swaps - Crude Oil 2028 Swaps - Crude Oil 2028 [Member] Swaps - Crude Oil 2028 Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Restricted cash Restricted Cash PROPERTY, PLANT AND EQUIPMENT Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Numerator for Basic and Diluted EPS Earnings Per Share Reconciliation [Abstract] Capital investments Capital Investments Capital Investments Measurement period adjustments, cash Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash And Equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Period Adjustments, Cash Common stock dividends Payments of Ordinary Dividends, Common Stock Other current assets, net Other current assets, net Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Measurement period adjustments, property, plant and equipment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Entity [Domain] Entity [Domain] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Fair value of commodity derivative contracts Derivative Asset, Noncurrent Interest paid, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Shares cancelled for taxes APIC, Share-Based Payment Arrangement, Shares Cancelled For Taxes APIC, Share-Based Payment Arrangement, Shares Cancelled For Taxes Sold Calls - Crude Oil Q4 2025 Sold Calls - Crude Oil Q4 2025 [Member] Sold Calls - Crude Oil Q4 2025 Net Fair Value Reported Value Measurement [Member] NWPL Rockies - Natural Gas Q1 2026 NWPL Rockies - Natural Gas Q1 2026 [Member] NWPL Rockies - Natural Gas Q1 2026 Taxes other than on income Taxes, Miscellaneous Equity [Abstract] Equity [Abstract] Combined Unrestricted Subsidiaries Combined Unrestricted Subsidiaries, Consolidating [Member] Combined Unrestricted Subsidiaries, Consolidating Less: Segment Reconciliation [Abstract] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] San Joaquin Energy Company San Joaquin Energy Company [Member] San Joaquin Energy Company Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Settlements Gain (Loss) on Sale of Derivatives Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Other Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] CONDENSED CONSOLIDATING FINANCIAL INFORMATION Condensed Financial Statements [Text Block] Ownership [Domain] Ownership [Domain] Schedule of Components of Net Periodic Benefit Costs Schedule of Net Benefit Costs [Table Text Block] Other long-term liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Measurement period adjustments, other noncurrent assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets General and administrative expenses Selling, General and Administrative Expense DEFERRED INCOME TAXES Deferred tax asset Deferred Income Tax Assets, Net NWPL Rockies - Natural Gas Q2 2026 NWPL Rockies - Natural Gas Q2 2026 [Member] NWPL Rockies - Natural Gas Q2 2026 Depreciation, depletion and amortization Depreciation, depletion and amortization Depreciation, Depletion and Amortization ScheduleOfCondensedFinancialStatements [Table] Condensed Financial Statements [Table] OTHER NONCURRENT ASSETS Other noncurrent assets Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement PEO Name PEO Name Total operating revenues Segment operating revenues Total operating revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Finished goods Inventory, Finished Goods, Gross Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount NWPL Rockies - Natural Gas 2027 NWPL Rockies - Natural Gas 2027 [Member] NWPL Rockies - Natural Gas 2027 Revolving Credit Facility Revolving Credit Facility Revolving Credit Facility [Member] Write off of deferred debt issuance cost Deferred Debt Issuance Cost, Writeoff Excise tax on share repurchases Noncash Financing Activities, Excise Tax On Share Repurchases To Be Paid Noncash Financing Activities, Excise Tax On Share Repurchases To Be Paid Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Advanced payments Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Schedule of Fair Value of Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Local Phone Number Local Phone Number MMBtu per day (in millions of BTU) Derivative, Nonmonetary Notional Amount, Energy Measure Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] 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, net Payment for (Proceeds from) Other Investing Activity Subsequent Event Type [Axis] Subsequent Event Type [Axis] Premiums due on commodity derivative contracts Premiums Due On Derivative Contracts, Current Premiums Due On Derivative Contracts, Current Cash Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Long-term debt, net Long-term debt Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Net periodic benefit costs: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Operating costs Oil and Gas, Production Cost, Period Cost PENSION AND POSTRETIREMENT BENEFIT PLANS Retirement Benefits [Text Block] Business Combination [Line Items] Business Combination [Line Items] Loss on early extinguishment of debt Net loss on early extinguishment of debt Gain (Loss) on Extinguishment of Debt Contingent liability (Note 3 Investments and Related Party Transactions) Equity Method Investments, Contingent Liabilities, Noncurrent Equity Method Investments, Contingent Liabilities, Noncurrent Credit Facility [Domain] Credit Facility [Domain] Fair value of derivative contracts Derivative Liability, 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] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Repurchases of common stock Total Value of Shares Purchased Treasury Stock, Value, Acquired, Cost Method 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] Investment, Name [Axis] Investment, Name [Axis] Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Liabilities Debt instrument, interest rate, stated percentage Interest rate Debt Instrument, Interest Rate, Stated Percentage Operating lease liability Operating Lease, Liability, Noncurrent Emission reduction credits Emission Reduction Credits, Noncurrent Emission Reduction Credits, Noncurrent Existing CRC Stockholders Existing CRC Stockholders [Member] Existing CRC Stockholders Issuance of shares for stock-based compensation awards Stock Issued Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership [Axis] Ownership [Axis] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Amortization of prior service cost credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Gross Amounts at Fair Value Derivative Asset, Subject to Master Netting Arrangement, before Offset Acquisitions And Divestitures [Abstract] Acquisitions And Divestitures Abstract Fair Value as of Grant Date Award Grant Date Fair Value Entity Bankruptcy Proceedings, Reporting Current Entity Bankruptcy Proceedings, Reporting Current Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Compensation-related liabilities Deferred Compensation Liability, Classified, Noncurrent Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Warrants/Restricted/Performance stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Total costs and other Costs and Expenses Document Quarterly Report Document Quarterly Report Schedule of Reconciliation of Capital Investments from Segments to Consolidated Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Fair Value of Long-Term Debt Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Interest cost on projected benefit obligation Defined Benefit Plan, Interest Cost Related Party, Type [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Sold Calls - Crude Oil 2H 2026 Sold Calls - Crude Oil 2H 2026 [Member] Sold Calls - Crude Oil 2H 2026 Reconciliation (Income)/Expense Corporate and Other Corporate And Reconciling Items [Member] Corporate And Reconciling Items Noncurrent liabilities Other Noncurrent Liabilities [Member] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Restatement Determination 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