Supplemental Cash Flow Information Supplemental Cash Flow Information [Abstract] Customer [Domain] Customer [Domain] Actuarial loss Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Trading period excluded Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate, Trading Period Excluded Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate, Trading Period Excluded Letters of Credit Letter of Credit [Member] Reorganization, Chapter 11 [Domain] Reorganization, Chapter 11 [Domain] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Environmental and other abandonment obligations Accrued Environmental Loss Contingencies, Noncurrent Carryforward for business interest expense Deferred Tax Assets, Tax Credit Carryforwards, General Business Value funds Value Funds [Member] Represents those funds to focus on safety rather than growth, and often choose investments providing dividends as well as capital appreciation. Two California Refineries, Each Two California Refineries, Each [Member] Two California Refineries, Each Preferred stock, outstanding shares (in shares) Preferred Stock, Shares Outstanding Net Fair Value Derivative Liability Cash dividends ($0.17 per share) Dividends, Common Stock, Cash Reorganization, Chapter 11 [Line Items] Reorganization, Chapter 11 [Line Items] Security Exchange Name Security Exchange Name Oil Oil and Condensate [Member] Cancelled or Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Numerator for Basic and Diluted EPS Earnings Per Share Reconciliation [Abstract] Weighted-average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Gas plant and power plant assets Gas Plant And Power Plant Assets [Member] Assets used in gas plant and power plant. Successor common stock issued for the junior debtor-in-possession exit fee pursuant to the Plan Successor Common Stock Issued Junior Debtor-In-Possession Exit Fee Successor Common Stock Issued Junior Debtor-In-Possession Exit Fee Accrued liabilities Liability, Defined Benefit Plan, Current Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Modification of noncontrolling interest Adjustments To Additional Paid In Capital, Modification Of Noncontrolling Interest Adjustments To Additional Paid In Capital, Modification Of Noncontrolling Interest Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Derivative Instruments Derivatives, Policy [Policy Text Block] Contributions from noncontrolling interest holders Proceeds from Noncontrolling Interests Number of shares available for future issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Increase (decrease) in cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect 2023 Long-Term Debt, Maturity, Year Two Gain on asset divestitures Gain on asset divestitures Gain on asset divestitures Gain (Loss) on Disposition of Assets Charged (Credited) to Costs and Expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Senior DIP And Junior DIP Credit Agreements Senior DIP And Junior DIP Credit Agreements [Member] Senior DIP And Junior DIP Credit Agreements Subsequent Event Type [Domain] Subsequent Event Type [Domain] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Principal maturities of long-term debt Maturities of Long-term Debt [Abstract] Asset Retirement Obligation [Abstract] Asset Retirement Obligation [Abstract] Lease liability Lease, Liability, Noncurrent Lease, Liability, Noncurrent Debt Securities Defined Benefit Plan, Debt Security [Member] Gross (decreases) increases – tax positions in prior year Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Proceeds from Senior Notes Proceeds from Issuance of Senior Long-term Debt Deferred tax assets, net Deferred Tax Assets, Net Total antidilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Schedule of inventories Schedule of Inventory, Current [Table Text Block] Subsequent Events [Abstract] Subsequent Events [Abstract] J V Partner J V Partner [Member] J V Partner Member Rights Offering Rights Offering [Member] Rights Offering Member Deferred Tax Assets, Net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Business Acquisition [Axis] Business Acquisition [Axis] Schedule of asset impairments Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] Award Type [Domain] Award Type [Domain] Local Phone Number Local Phone Number Typical term of payment following invoicing Term of Payment after Invoicing for Contracts with Customers Term of payment following invoicing for contracts with customers, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Other Unrecovered Capital Costs Unrecovered Capital Costs Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] 7.125% Unsecured Debt Notes 7.125% Unsecured Debt Notes Due 2026 [Member] 7.125% Unsecured Debt Notes Due 2026 Interest rate floor Debt Instrument, Variable Rate, Floor Debt Instrument, Variable Rate, Floor Preferred stock (20 million shares authorized at $0.01 par value); no shares outstanding at December 31, 2021 or 2020 Preferred stock Preferred Stock, Value, Issued Distributions to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 2014 Revolving Credit Facility 2014 Revolving Credit Facility [Member] 2014 Revolving Credit Facility Member Total derivatives Derivative Assets (Liabilities), at Fair Value, Net Accumulated (Deficit) Earnings Retained Earnings [Member] Backstop Commitment Agreement Backstop Commitment Agreement [Member] Backstop Commitment Agreement Member Redeemable noncontrolling interest, equity, preferred, redemption value Redeemable Noncontrolling Interest, Equity, Preferred, Redemption Value Net Periodic Benefit Cost Assumptions Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Percentage of payouts target awards Percent Of Target Award That Would Settle Fully Stock Percent of the target award that would settle, once certified, fully in stock, including awards that were originally designated to settle in cash but were modified to settle in stocks. Percentage of common interest held by CRC Noncontrolling Interest, Ownership Percentage by Parent Debtor-in-possession financing costs Payments For Debtor-In-Possession Financing Costs Payments For Debtor-In-Possession Financing Costs Utility Plant [Domain] Utility Plant [Domain] Unamortized deferred gain and issuance costs, net Debtor Reorganization Items, Gain (Loss) on Settlement of Other Claims, Net Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Dry hole expenses Results of Operations, Dry Hole Costs Twelve Months Beginning February 1, 2024 After the Second Anniversary Date, Before Third Anniversary Date Debt Instrument, Redemption, Period Four [Member] Deferred Tax Assets, postretirement benefit accruals Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Property, Plant and Equipment [Line Items] Property, Plant and Equipment Property, Plant and Equipment [Line Items] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Fair value of asset retirement obligations Reorganization, Fair Value Of Asset Retirement Obligations Reorganization, Fair Value Of Asset Retirement Obligations Forecast period (in years) Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Forecast Period Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Forecast Period Financing cash flows Finance Lease, Principal Payments Stock-Based Incentive Plans Compensation Related Costs, Policy [Policy Text Block] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Schedule of financial performance covenants Debt Instrument, Financial Performance Covenants [Table Text Block] The tabular disclosure of debt instruments financial performance covenants. REVENUE Revenue from Contract with Customer [Text Block] Sublease income Sublease Income Unvested, beginning of year (in shares) Unvested, end of year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2022 Long-Term Debt, Maturity, Year One Transportation costs Transportation Costs [Member] Transportation Costs Class C common interest Common Class C [Member] Deferred Tax Asset, business interest expense carryforward Deferred Tax Asset, Interest Carryforward Fair Value Measurement [Domain] Fair Value Measurement [Domain] SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Capitalized exploratory well costs for the years ended December 31: Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward] New common stock issued (in shares) Plan Of Reorganization Common Stock Shares New Issues Plan Of Reorganization Common Stock Shares New Issues Audit Information [Abstract] Audit Information [Abstract] Other non-cash charges to income, net Other Noncash Income (Expense) Gross Amounts at Fair Value Derivative Asset, Fair Value, Gross Asset Expected cash consideration Disposal Group, Maximum Cash Consideration Disposal Group, Maximum Cash Consideration Deferred Tax Liabilities, property, plant and equipment differences Deferred Tax Liabilities, Property, Plant and Equipment Trade receivables Receivables, Net, Current Fair Value of Derivatives Offsetting Assets [Line Items] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Prior to February 1, 2023 After 90 Days, Before First Anniversary Date Debt Instrument, Redemption, Period Two [Member] Entity Voluntary Filers Entity Voluntary Filers Proceeds from debt Proceeds from Issuance of Secured Debt Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Plan Name [Axis] Plan Name [Axis] Cash used temporarily Reorganization, Cash Used Temporarily As Collateral Reorganization, Cash Used Temporarily As Collateral Fixed income Fixed Income Funds [Member] Long-term debt, net Long-term Debt OTHER LONG-TERM LIABILITIES Liabilities, Other than Long-term Debt, Noncurrent Interest rate to be in place to receive payment Derivative, Cap Interest Rate Assets Held for Sale Discontinued Operations, Policy [Policy Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] CASH FLOW FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Income Taxes Income Tax Disclosure [Abstract] Entity Small Business Entity Small Business Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Gross increases – tax positions in current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Benefit from plan amendment Plan amendment Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment Additional paid-in capital Additional Paid in Capital Derivative, period Derivative, Terms, Period Derivative, Terms, Period Organization Changes Organization Changes [Member] Organization Changes Common stock price per share (in dollars per share) Plan Of Reorganization Common Stock Price Per Share Plan Of Reorganization Common Stock Price Per Share SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Offsetting Assets [Table] Offsetting Assets [Table] Fair value of derivative contracts Derivative Liability, Current Entity Interactive Data Current Entity Interactive Data Current Thereafter Long-Term Debt, Maturity, after Year Five Payments to settle award Share-based Payment Arrangement, Cash Used to Settle Award Stock repurchase program, increase in authorized amount Stock Repurchase Program Increase In Authorized Amount Stock Repurchase Program Increase In Authorized Amount Fifth Year Debt Instrument, Redemption, Period Six [Member] Debt Instrument, Redemption, Period Six Deferred tax valuation allowance Deferred Tax Valuation Allowance [Member] Deferred Tax Valuation Allowance Member Legal, professional and other, net Legal, professional and other, net Payment of legal, professional and other fees Debtor Reorganization Items, Legal and Advisory Professional Fees Sales of purchased natural gas Marketing And Trading [Member] Marketing And Trading Settlement costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Proceeds from Second Lien Term Loan Proceeds from Issuance of Medium-term Notes Balance Sheet Location [Domain] Balance Sheet Location [Domain] Unrecognized tax benefits – beginning balance Unrecognized tax benefits – ending balance Unrecognized Tax Benefits Number of new directors Plan Of Reorganization, Number Of New Directors Plan Of Reorganization, Number Of New Directors Deferred Tax Assets, subtotal Deferred Tax Assets, Gross Income Tax Authority [Domain] Income Tax Authority [Domain] Union employees Union Employees [Member] Union employees member Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Modification of noncontrolling interest Noncontrolling Interest In Net Income Loss Of Return Noncontrolling Interest In Net Income Loss Of Return Fair value of derivative contracts Derivative Asset, Current Entity Address, State or Province Entity Address, State or Province Beginning balance Ending balance Capitalized Exploratory Well Costs Contribution from noncontrolling interest holder, net Noncontrolling Interest, Increase from Sale of Parent Equity Interest Line of credit facility, increase in current borrowing capacity Line of Credit Facility, Increase In Current Borrowing Capacity Line of Credit Facility, Increase In Current Borrowing Capacity LEASES Lessee, Finance Leases [Text Block] DEFERRED TAX ASSET Deferred Income Tax Assets, Net CURRENT LIABILITIES Liabilities, Current [Abstract] Mezzanine equity Net (loss) income attributable to noncontrolling interests Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Redeemable Reconciliation of enterprise value Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock [Table Text Block] Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock Table Text Block Equity Securities Equity Securities [Member] 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Present value of purchase obligations Contractual Obligation Derivative Instrument [Axis] Derivative Instrument [Axis] Schedule of fresh-start adjustments Reorganization, Chapter 11 [Table Text Block] MEZZANINE EQUITY Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Present value of lease liabilities Operating Lease, Liability Beginning balance Ending balance Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Carrying Amount Document Transition Report Document Transition Report Proceeds from Subscription Rights and Backstop Commitment, net Debtor Reorganization Items Net Proceeds from Subscription Rights and Backstop Commitment, Net Debtor Reorganization Items Net Proceeds from Subscription Rights and Backstop Commitment, Net Calls Call Option [Member] Common stock (200 million shares authorized at $0.01 par value); (83,389,210 and 83,319,660 shares issued; 79,299,222 and 83,319,660 shares outstanding at December 31, 2021 and 2020, respectively) Par value Common Stock, Value, Issued Weighted-average discount rate Finance Lease, Weighted Average Discount Rate, Percent Reorganization, Chapter 11 [Table] Reorganization, Chapter 11 [Table] Weighted-average period over which unrecognized compensation expense is expected to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unvested, beginning of year (in dollars per share) Unvested, end of year (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Major Customers Customer Concentration Risk [Member] 2016 Credit Agreement, Second Lien Notes, 2021 Notes And 2024 Notes 2016 Credit Agreement, Second Lien Notes, 2021 Notes And 2024 Notes [Member] 2016 Credit Agreement, Second Lien Notes, 2021 Notes And 2024 Notes LEASES Lessee, Operating Leases [Text Block] Net benefit liability (unfunded status) Defined Benefit Plan, Funded (Unfunded) Status of Plan Financial covenant minimum month end liquidity Debt Instrument, Covenant Terms, Minimum Monthly Liquidity Amount of minimum monthly liquidity required to maintain, per debt covenant agreement. Revisions of estimated obligation Asset Retirement Obligation, Revision of Estimate ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Schedule of grant date assumptions used in the Black-Scholes valuation for stock options Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Reorganization items, net (debtor-in-possession financing costs) Reorganization Items Net Debtor-In-Possession Financing Costs Reorganization Items Net Debtor-In-Possession Financing Costs Sold Short [Member] Schedule of other noncurrent assets Schedule of Other Assets, Noncurrent [Table Text Block] Ownership [Axis] Ownership [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Legal Entity [Axis] Legal Entity [Axis] Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 2017 Credit Agreement 2017 Credit Agreement [Member] 2017 Credit Agreement Member Projected healthcare cost rate in 2020 Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Class of Stock [Axis] Class of Stock [Axis] Amortization of prior service cost credit included in net periodic benefit cost Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Unproved properties Impairment Of Oil And Gas Properties, Unproved Properties Impairment Of Oil And Gas Properties, Unproved Properties Reconciliation of unrecognized tax benefits Summary of Income Tax Contingencies [Table Text Block] Income Tax Authority [Axis] Income Tax Authority [Axis] Schedule of other expenses, net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Proceeds from Second Lien Term Loan Debtor Reorganization Items Net Proceeds From Second Lien Term Loan Debtor Reorganization Items Net Proceeds From Second Lien Term Loan Electricity generation expenses Electricity Cost Of Sales [Member] Electricity Cost Of Sales NONCONTROLLING INTERESTS Noncontrolling Interest [Line Items] Entity [Domain] Entity [Domain] Dividends declared, common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Accrued liabilities Accrued liabilities Accrued Liabilities, Current Oil, natural gas and NGL sales Revenue from Contract with Customer, Excluding Assessed Tax After Fourth Anniversary Debt Instrument, Period Five [Member] Debt Instrument, Period Five Stock-Settled Restricted Stock Stock Settled Restricted Stock Units [Member] Represents stock with shares for which sale is contractually or governmentally restricted for a given period of time, which are settled in shares at the time of vesting. Bakersfield Office Building Bakersfield Office Building [Member] Bakersfield Office Building Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Equity [Abstract] Deferred Tax Assets, property, plant and equipment differences Deferred Tax Assets, Property, Plant and Equipment Derivative Instrument, Period [Axis] Derivative Instrument, Period [Axis] Derivative Instrument, Period Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Hardware Hardware [Member] Hardware Member Variable Rate [Axis] Variable Rate [Axis] Basis spread on variable rate Debtor-In-Possession Financing, Basis Spread On Variable Interest Rate On Borrowings Outstanding Debtor-In-Possession Financing, Basis Spread On Variable Interest Rate On Borrowings Outstanding Weighted-average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Debtor-in-possession financing, borrowings outstanding Debtor-in-Possession Financing, Borrowings Outstanding Summary of the activity of the asset retirement obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Weighted-average price (in dollars per barrel) Derivative, Average Price Risk Option Strike Price Increase (decrease) in Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Margin increase, additional increase each subsequent fiscal quarter Debt Instrument, Margin Increase, Additional Increase Each Subsequent Fiscal Quarter Debt Instrument, Margin Increase, Additional Increase Each Subsequent Fiscal Quarter Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Variable Rate [Domain] Variable Rate [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] LIABILITIES SUBJECT TO COMPROMISE Total liabilities subject to compromise Liabilities Subject to Compromise Repayments of debt Repayments of Debt 2027 to 2031 Payouts Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Ares JV Ares Joint Venture [Member] Represents Ares joint venture (Ares JV). Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Projected healthcare cost rate in 2028 Defined Benefit Plan, Health Care Cost Trend Rate On The Eighth Year The assumed health care cost trend rate for on the eighth year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. Amortization of deferred gain Amortization Of Deferred Gains And Debt Issuance Cost The amount of amortization of deferred gains and deferred debt issuance costs. Proceeds from lines of credit Proceeds from Lines of Credit Summary of the activity of capitalized exploratory well costs Capitalized Exploratory Well Costs, Roll Forward [Table Text Block] Other noncurrent assets Other Assets [Member] Estimated fair value of long-term debt Long-term Debt, Fair Value Non-cash commodity derivative (loss) gain, attributable to noncontrolling interest Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Noncontrolling Interest Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Noncontrolling Interest Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Other Payments for (Proceeds from) Other Investing Activities Decommissioning obligations satisfaction period Disposal Group, Abandonment Obligations, Satisfaction Period Disposal Group, Abandonment Obligations, Satisfaction Period Maximum Maximum [Member] Working interest in Lost Hills field sold Percentage of Working Interest Sold The percentage of working interest sold. Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Total income tax expense (benefit) differs from the U.S. federal income tax rate to pre-tax income (loss) Effective Income Tax Rate Reconciliation, Percent [Abstract] Mezzanine Equity - Redeemable Noncontrolling Interest Mezzanine Equity Redeemable Noncontrolling Interest [Member] This element represents mezzanine equity redeemable noncontrolling interest. Schedule of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] (Increase) decrease in trade receivables Increase (Decrease) in Receivables Award Type [Axis] Award Type [Axis] CASH FLOW FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Number of offshore platforms with decommissioning obligations defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Schedule of maturities of our operating lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Total equity attributable to common stock Total equity attributable to common stock Stockholders' Equity Attributable to Parent Emission reduction credits Emission Reduction Credits, Noncurrent Emission Reduction Credits, Noncurrent City Area Code City Area Code Increase (decrease) in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Schedule of supplemental disclosures to our consolidated statements of cash flows, excluding leases, Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] ACQUISITIONS AND DIVESTITURES ACQUISITIONS AND DIVESTITURES No definition available. Derivative related to additional earn-out consideration for the Ventura divestiture Derivative Related To Additional Earn-Out Consideration For The Ventura Divestiture Derivative Related To Additional Earn-Out Consideration For The Ventura Divestiture Repayment of 2020 Senior Notes Repayments of Senior Debt Deposits and other Other Assets, Miscellaneous, Noncurrent Other long-term liabilities for the supplemental retirement plan Supplemental Retirement Plan, Supplemental Retirement Plan Accrued Liabilities This element represents the accrued liabilities for supplemental retirement benefit plan which provides restoration of benefit lost due to government limitations on qualified retirement benefits. Repurchases of common stock Payments for Repurchase of Common Stock Derivative, allocation percent Derivative, Allocation Percent Derivative, Allocation Percent Expected useful lives Property, Plant and Equipment, Useful Life Statement [Line Items] Equity, Class of Treasury Stock [Line Items] Operating Operating Lease, Liability, Noncurrent Lease liability Lease, Liability, Current Lease, Liability, Current Stockholders' equity Net (loss) income attributable to noncontrolling interests Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Aggregate principal amount issued Debt instrument face amount Debt Instrument, Face Amount Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Amounts recognized in accumulated other comprehensive income (loss) Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Income tax benefit related to stock-based compensation Share-based Payment Arrangement, Expense, Tax Benefit 2016 Credit Agreement Secured First Lien Second Out Credit Agreement [Member] Represents information pertaining to Secured First Lien Second Out Credit Agreement which is entered into by entity in 2016. Subscription Right, Backstop Commitment Agreement Subscription Right, Backstop Commitment Agreement [Member] Subscription Right, Backstop Commitment Agreement Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Restricted Stock Units Shares issuable upon settlement of RSUs Restricted Stock Units (RSUs) [Member] Line of credit facility, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Charged (Credited) to Other Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account Secured Overnight Financing Rate Secured Overnight Financing Rate [Member] Secured Overnight Financing Rate Member Fair value of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Deferred Tax Liabilities, total net deferred taxes Deferred Tax Liabilities, Gross Business Acquisition [Line Items] Business Acquisition [Line Items] Capitalized cost Capitalized Contract Cost, Impairment Loss Income Statement [Abstract] Income Statement [Abstract] Investment commitment in joint venture Total Investment Commitment In Joint Venture, Maximum Represents the total maximum investment commitment in the joint venture. Entity Registrant Name Entity Registrant Name Deferred Tax Assets and Liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Distribution to noncontrolling interest holder Debtor Reorganization Items, Distribution To Noncontrolling Interest Holder Debtor Reorganization Items, Distribution To Noncontrolling Interest Holder Power plant interruption Power Plant Interruption Power Plant Interruption U.S. equity Us Equity [Member] Represents U.S. equity information. Settlement costs Other Comprehensive Income Defined Benefit Plan Recognized Net Gain (Loss) Due to Settlements Before Tax Amount after tax of net gain (loss) due to settlements changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that has not been recognized in net periodic benefit cost (credit) before tax. Income tax benefit (provision) Income tax benefit Income Tax Expense (Benefit) 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Trade receivables Accounts Receivable, after Allowance for Credit Loss, Current Entity Tax Identification Number Entity Tax Identification Number Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Document Fiscal Period Focus Document Fiscal Period Focus Total current assets Assets, Current Cancelled or Forfeited (in shares) Cancelled or Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Warrant issued Adjustments to Additional Paid in Capital, Warrant Issued Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Less: Net income allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Gain on acquisition of noncontrolling interest Equity Awards Granted And Cancelled In Connection With Return From Non-Controlling Interest Holders Equity Awards Granted And Cancelled In Connection With Return From Non-Controlling Interest Holders Acquisition of noncontrolling interest as part of the Settlement Agreement Debtor Reorganization Items, Acquisition Of Noncontrolling Interest As Part Of The Settlement Agreement Debtor Reorganization Items, Acquisition Of Noncontrolling Interest As Part Of The Settlement Agreement Net (payments) proceeds on commodity derivatives Gain (Loss) on Sale of Commodity Contracts Equity Component [Domain] Equity Component [Domain] Other Stockholders' Equity, Other 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Disposal Group Name [Domain] Disposal Group Name [Domain] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Successor common stock, Subscription Rights and Warrants issued pursuant to the Plan Successor Common Stock, Subscription Rights And Warrants Issued Successor Common Stock, Subscription Rights And Warrants Issued Total property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Subscription Rights Subscription Rights [Member] Subscription Rights Member Deferred financing costs - Revolving Credit Facility Debt Issuance Costs, Noncurrent, Net Enterprise value Reorganization, Enterprise Value Reorganization, Enterprise Value Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Class B preferred interest Series B Preferred Stock [Member] Derivative Instrument, Period [Domain] Derivative Instrument, Period [Domain] Derivative Instrument, Period Domain Fair values of pension plan assets by asset category Schedule of Allocation of Plan Assets [Table Text Block] Change in the U.S. federal valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Counterparty Name [Domain] Counterparty Name [Domain] Plan of Reorganization [Abstract] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Working interest acquired by MIRA Joint Venture Working Interest Acquired Joint Venture Working Interest Acquired Finance Finance Lease, Liability, Current INCOME (LOSS) BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Level 2 Fair Value, Inputs, Level 2 [Member] Auditor Location Auditor Location Net loss (gain) from commodity derivatives Derivative, Gain (Loss) on Derivative, Net Type of Restructuring [Domain] Type of Restructuring [Domain] Number of trading days Share-Based Compensation Arrangement By Share-Based Payment Award, Weighted Average Price, Number Of Trading Days Share-Based Compensation Arrangement By Share-Based Payment Award, Weighted Average Price, Number Of Trading Days Commodity Contracts Commodity Contract [Member] Proceeds from debtor-in-possession facilities Proceed From Debtor-in-Possession Financing Proceed From Debtor-in-Possession Financing Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of calculation of basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Add: Other long-term liabilities Other Long-term Debt Title of 12(b) Security Title of 12(b) Security Divestitures of asset retirement obligations Asset Retirement Obligation, Liabilities Divested Asset Retirement Obligation, Liabilities Divested Acquisition of noncontrolling interest in connection with the Plan Payments to Noncontrolling Interests Common stock, authorized shares (in shares) Common Stock, Shares Authorized Net income (loss) available to common stockholders - diluted Net Income (Loss) Available to Common Stockholders, Diluted Title of Individual [Axis] Title of Individual [Axis] Net income (loss) available to common stockholders - basic Net Income (Loss) Available to Common Stockholders, Basic Lost Hills, San Joaquin Basin Lost Hills, San Joaquin Basin [Member] Lost Hills, San Joaquin Basin Document Type Document Type Product and Service [Domain] Product and Service [Domain] International equity International Equity [Member] Represents information of information equity. Interest rate Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Modification of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Return, Nonredeemable Noncontrolling Interest In Net Income (Loss) Of Return, Nonredeemable Net (income) loss attributable to noncontrolling interests Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest CHAPTER 11 PROCEEDINGS FRESH START ACCOUNTING Reorganization under Chapter 11 of US Bankruptcy Code Disclosure [Text Block] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Liability recorded for unrecognized tax benefits Unrecognized Tax Benefits, Period Increase (Decrease) Percentage of operating costs reported under PSC-type contracts Percentage of Operating Costs Reported Under Production Sharing Type Contracts The percentage of operating costs reported under PSCs. Revolving Credit Facility Revolving Credit Facility Revolving Credit Facility [Member] After Fifth Anniversary Debt Instrument, Period Six [Member] Debt Instrument, Period Six 2024 Contractual Obligation, to be Paid, Year Three Assumed health care cost trend rates Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] Schedule of operating lease costs, including amounts capitalized to property, plant and equipment Lease, Cost [Table Text Block] Geographical [Axis] Geographical [Axis] State and Local Jurisdiction State and Local Jurisdiction [Member] Reorganization items, net Total reorganization items, net Debtor Reorganization Items, Other Expense (Income) SUBSEQUENT EVENTS Subsequent Events [Text Block] Accrued payroll tax Accrued Payroll Taxes, Current Net prior service credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Net cash (used) provided by financing activities Net Cash Provided by (Used in) Financing Activities Treasury stock (4,089,988 shares held at cost at December 31, 2021 and no shares held at December 31, 2020) Treasury Stock, Value Weighted-average common shares outstanding Denominator for Basic EPS Weighted Average Number of Shares Outstanding, Diluted [Abstract] Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Interest and penalties related to uncertain tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Performance Stock Units Shares issuable upon settlement of PSUs Performance Stock Units [Member] Performance Stock Units 6% Senior Notes due 2024 Senior Notes600 Percent Due2024 [Member] Represents the senior notes payable that bear an interest rate of 6.00 percent and will mature in 2024. Total operating expenses Costs and Other Deductions Total costs of sales, operating expenses, and other operating expenses for the period. Schedule of maturities of our financing lease liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Restructuring Charges Restructuring Charges Estimated future undiscounted benefit payments Defined Benefit Plan, Expected Future Benefit Payment [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Cash-settled Awards Cash Settled Employee Stock Option And Stock Appreciation Right [Member] An arrangement whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares and share appreciation rights in the entity at a specified price, which is settled in cash as defined in the agreement. Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Proceeds from long-term lines of credit Proceeds from Long-term Lines of Credit Cash acquired Plan Of Reorganization, Settlement Agreement, Cash Paid Plan Of Reorganization, Settlement Agreement, Cash Paid REVENUES Revenues [Abstract] Reorganization items, net (non-cash) Total non-cash reorganization items Reorganization Items Net Non-Cash Reorganization Items Net Non-Cash Document Period End Date Document Period End Date Natural gas power and Gas processing plants Natural Gas Power And Gas Processing Plants [Member] Represents Natural Gas Power And Gas Processing Plants. Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Projected benefit obligation Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Debtor-in-possession financing costs Debtor Reorganization Items, Debtor-in-Possession Facility Financing Costs State income taxes, net Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Charged to expense Capitalized Exploratory Well Cost, Charged to Expense Schedule of property, plant and equipment, net Property, Plant and Equipment [Table Text Block] Income Statement Location [Domain] Income Statement Location [Domain] Debt instrument, term Debt Instrument, Term Supplemental Disclosure of Noncash Investing and Financing Activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] Disposal Group, Held-for-sale, Not Discontinued Operations Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Stockholders' Equity Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Impact of fresh start accounting Asset Retirement Obligation, Fresh Start Accounting Impact Asset Retirement Obligation, Fresh Start Accounting Impact Net income (loss) attributable to common stock per share Earnings Per Share [Abstract] Earnings Per Share [Abstract] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Materials and supplies Other Inventory, Supplies, Gross Restricted cash Debtor Reorganization Items Restricted Cash Debtor Reorganization Items Restricted Cash Offshore platforms with decommissioning obligations defaulted percentage Offshore Platforms With Decommissioning Obligations Defaulted, Ownership Percent Offshore Platforms With Decommissioning Obligations Defaulted, Ownership Percent Total operating revenues Revenues Thereafter Contractual Obligation, to be Paid, after Year Five Long Term Purchase and Contractual Obligation Long Term Purchase And Contractual Obligation [Member] Represents the information pertains to long term purchase and contractual obligations. Finished goods Inventory, Finished Goods, Gross Second Lien Term Loan Second Lien Notes [Member] Second Lien Notes Payment of accrued interest and bank fees Payment of accrued interest and bank fees Debtor Reorganization Items, Accrued Interest And Bank Fees Debtor Reorganization Items, Accrued Interest And Bank Fees Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Debt instrument, floor interest rate Debt Instrument, Floor Interest Rate Debt Instrument, Floor Interest Rate Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Entity Current Reporting Status Entity Current Reporting Status Fair value of plan assets—beginning of year Fair value of plan assets—end of year Fair value of plan assets Defined Benefit Plan, Plan Assets, Amount Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Production Sharing Type Contracts Production Sharing Type Contracts [Abstract] No definition available. Liabilities subject to compromise gross Liabilities Subject To Compromise, Debt Liabilities Subject To Compromise, Debt Effective tax rate Effective Income Tax Rate Reconciliation, Percent Fair value adjustment of noncontrolling interest in fresh start accounting Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Nonredeemable Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Nonredeemable Expected contribution in 2022 Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Stock-Settled PSU awards Stock Settled Performance Stock Unit Awards [Member] Stock settled performance stock unit awards member Daily volume (in Bbl) Derivative, Nonmonetary Notional Amount Counterparty Name [Axis] Counterparty Name [Axis] Joint Venture With Benefit Street Partners Joint Venture With Benefit Street Partners [Member] Represents the information pertaining to joint venture with benefit street partners of divestitures and other. Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Swaps Swap [Member] Total Contractual Obligation, Including Undiscounted Excess Amount Contractual Obligation, Including Undiscounted Excess Amount Warrant issued to a joint venture partner Warrant Issued To A Joint Venture Partner Warrant Issued To A Joint Venture Partner Prior to 90 Days Debt Instrument, Redemption, Period One [Member] Number of shares available for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Leases [Abstract] Leases [Abstract] Total recognized in other comprehensive (loss) income Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent Income Taxes Income Tax, Policy [Policy Text Block] LIBOR Applicable margin on LIBOR loans London Interbank Offered Rate (LIBOR) [Member] Gas processing plant capacity Property, Plant and Equipment, Gas Processing Plant Capacity Represents the capacity of gas processing plant. 2026 Contractual Obligation, to be Paid, Year Five Disposal Group Classification [Domain] Disposal Group Classification [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Number of finance lease contracts Lessee, Finance Lease, Number Of Lease Contracts Lessee, Finance Lease, Number Of Lease Contracts Diluted (in shares) Weighted-average common shares outstanding — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted INCOME TAXES Income Tax Disclosure [Text Block] Number of employees accruing benefits under defined benefit plans Defined Benefit Plan, Number of Participating Employees This element represents the number of employees currently accruing benefits under defined benefit plans. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Interest rate added to variable rate basis Debt Instrument, Basis Spread on Variable Rate Amortization of net actuarial gain/loss Other Comprehensive Income Defined Benefit Plan Reversal of Amortization of Net Actuarial Gain (Loss) Before Tax Amount of reversal of amortization of net actuarial gain (loss) after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit before tax. Schedule of net benefit costs Schedule of Net Benefit Costs [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Asset retirement obligations Non-current portion Asset Retirement Obligations, Noncurrent Acquisition of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Acquisition, Nonredeemable Noncontrolling Interest In Net Income (Loss) Of Acquisition, Nonredeemable Purchased of working interest share conveyed assets Payments To Acquire Working Interest Share In Conveyed Assets Payments To Acquire Working Interest Share In Conveyed Assets Credit Facility [Axis] Credit Facility [Axis] Entity Address, Address Line One Entity Address, Address Line One CASH FLOW FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] ECR Ecr Corporate Holdings [Member] This member represents ECR corporate holdings General and administrative expenses General and Administrative Expense [Member] Entity Shell Company Entity Shell Company Derivatives Derivative Instruments and Hedging Activities Disclosures [Line Items] Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Total current liabilities Liabilities, Current Shares cancelled for taxes and other Payment, Tax Withholding, Share-based Payment Arrangement Production-Sharing Type Contracts Production Sharing Type Contracts [Policy Text Block] Disclosure of accounting policy for production sharing type contracts. Derivative, hedging percent Derivative, Terms, Hedging Percent Derivative, Terms, Hedging Percent Current Fiscal Year End Date Current Fiscal Year End Date Unamortized debt issuance costs Debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Net (loss) income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Mutual funds Mutual Fund [Member] Statement [Table] Statement [Table] Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Recently Adopted Accounting and Disclosure Changes New Accounting Pronouncements, Policy [Policy Text Block] Deferred Tax Assets, other Deferred Tax Assets, Other 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Upfront fees on commitment Debtor-In-Possession Financing, Upfront Commitment Fees Debtor-In-Possession Financing, Upfront Commitment Fees Amounts recognized in other comprehensive income (expense) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Statistical Measurement [Axis] Statistical Measurement [Axis] Subsequent Event Subsequent Event [Member] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Equity attributable to noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Settlement payments of asset retirement obligations Asset Retirement Obligation, Liabilities Settled U.S. Consumer Price Index (CPI) increase Defined Benefit Plan, Health Care Cost Trend Rate Consumer Price Index Increase This element represents the assumed Consumer Price Index (CPI) increase used for projecting health care cost trend rates. Other non-operating expenses, net Other Nonoperating Expense Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of fair values (at gross and net) of outstanding derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Operating lease costs Operating Lease, Cost Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] January 2020 Divestiture January 2020 Divestiture [Member] January 2020 Divestiture Deferred income tax benefit Deferred Income Tax Expense (Benefit) Proceeds from warrants exercised Proceeds from Warrant Exercises Position [Axis] Position [Axis] Schedule of changes in noncontrolling interests Non-Redeemable And Redeemable Noncontrolling Interest [Table Text Block] Non-Redeemable And Redeemable Noncontrolling Interest Asset Class: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Stock repurchase program authorized amount Stock Repurchase Program, Authorized Amount U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Less: Interest Contractual Obligation, Undiscounted Excess Amount Contractual Obligation, Undiscounted Excess Amount Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK Net Income (Loss) Attributable to Parent Bond funds Bond Funds [Member] Mutual funds that invest in bonds issued by municipalities, corporations, and the US government and its agencies. Operating lease right-of-use assets Operating Operating Lease, Right-of-Use Asset Percentage of common acquired Plan Of Reorganization, Settlement Agreement, Percentage Of Common Stock In Exchange For Debt Plan Of Reorganization, Settlement Agreement, Percentage Of Common Stock In Exchange For Debt Pension and Postretirement Benefit Plans Pension and Other Postretirement Plans, Policy [Policy Text Block] 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 Ventura Basin Ventura Basin [Member] Ventura Basin Deferred Tax Assets, net operating loss carryforwards and credits Deferred Tax Assets, Operating Loss Carryforwards Interest cost on projected benefit obligation Defined Benefit Plan, Interest Cost Accrued employee-related costs Employee-related Liabilities, Current Income Statement Location [Axis] Income Statement Location [Axis] Gain on settlement of liabilities subject to compromise Debtor Reorganization Items, Gain (Loss) On Settlement Of Liabilities Subject To Compromise Debtor Reorganization Items, Gain (Loss) On Settlement Of Liabilities Subject To Compromise Statistical Measurement [Domain] Statistical Measurement [Domain] 2023 Contractual Obligation, to be Paid, Year Two Expenses under provisions of defined contribution and supplemental plans Defined Contribution Plan And Supplemental Plan, Cost Defined Contribution Plan And Supplemental Plan, Cost Principal maturities of debt outstanding Schedule of Maturities of Long-term Debt [Table Text Block] Reorganization Adjustments Reorganization, Chapter 11, Plan Effect Adjustment [Member] 2023 Production 2023 [Member] Production 2023 Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Additional paid-in capital Additional paid-in capital Additional Paid in Capital, Common Stock Restructuring Type [Axis] Restructuring Type [Axis] Commitment fees Debtor-in-Possession Financing, Fee on Unused Borrowings OTHER NONCURRENT ASSETS Other noncurrent assets Other Assets, Noncurrent Term Loan Term Loan [Member] Represents Term loan member Impaired Long-Lived Assets Held and Used by Type [Axis] Impaired Long-Lived Assets Held and Used by Type [Axis] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Reorganization value Reorganization Value Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Retirement Benefits [Abstract] Retirement Benefits [Abstract] Entity File Number Entity File Number Percentage of principal amount at which notes can be redeemed prior to their maturity date Debt Instrument, Redemption Price, Percentage Share-based compensation, net APIC, Share-based Payment Arrangement, Increase for Cost Recognition Successor common stock and EHP Notes issued for acquisition of noncontrolling interest pursuant to the Plan EHP Notes Issued For Acquisition Of Noncontrolling Interest EHP Notes Issued For Acquisition Of Noncontrolling Interest VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Working interest retained by CRC Joint Venture Working Interest Retained In Properties Joint Venture Working Interest Retained In Properties EHP Notes EHP Notes [Member] EHP Notes Period before costs expensed for no proved reserves Property, Plant and Equipment, Period Before Costs Expensed For No Proved Reserves Property, Plant and Equipment, Period Before Costs Expensed For No Proved Reserves Other current assets Other Current Assets [Member] Variable lease costs Variable Lease, Cost Elimination of Predecessor equity Elimination Of Predecessor Equity Elimination Of Predecessor Equity Actuarial gains (losses) associated with pension and postretirement plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Puts Put Option [Member] Building Building [Member] NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER No definition available. Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Additional Letters Of Credit Additional Letters Of Credit [Member] Additional Letters Of Credit Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) BSP JV Benefit Street Partners [Member] Represents Benefit Street Partners (BSP). Summary of changes in cash and stock-settled Performance Stock Units (PSUs) Share-based Payment Arrangement, Performance Shares, Activity [Table Text Block] Title of Individual [Domain] Title of Individual [Domain] PROPERTY, PLANT AND EQUIPMENT Total property, plant and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Disposal Group Name [Axis] Disposal Group Name [Axis] Postretirement and pension benefit plans Other long-term liabilities Liability, Defined Benefit Plan, Noncurrent Software and Telecommunications Equipment Software and Telecommunications Equipment [Member] Software and Telecommunications Equipment Member Loss recorded in other non-operating expense Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Number of shares issued or reserved (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Shares Issued Or Reserved Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Shares Issued Or Reserved Stock Options Shares issuable upon exercise of stock options Equity Option [Member] Credit Facility [Domain] Credit Facility [Domain] 2024 Long-Term Debt, Maturity, Year Three 8% Notes Due 2022 Senior Notes800 Percent Due2022 [Member] Represents the senior notes payable that bear an interest rate of 8.00 percent and will mature in 2022. Pension plans with accumulated benefit obligation in excess of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Concentration risk percentage Concentration Risk, Percentage Property, Plant and Equipment (PP&E) Property, Plant and Equipment, Policy [Policy Text Block] Entity Bankruptcy Proceedings, Reporting Current Entity Bankruptcy Proceedings, Reporting Current Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Debt Instrument [Axis] Debt Instrument [Axis] Accretion expense on discounted obligation Asset Retirement Obligation, Accretion Expense NONCURRENT LIABILITIES Liabilities, Noncurrent [Abstract] Grant value of awards forfeited Shares Granted, Value, Share-based Payment Arrangement, Forfeited LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Other upstream acquisitions Series of Individually Immaterial Business Acquisitions [Member] Amortization of prior service cost credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Reorganization, Chapter 11 [Axis] Reorganization, Chapter 11 [Axis] ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Alpine JV Alpine JV [Member] Alpine JV [Member] Tax effects of temporary differences resulting in deferred income taxes Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage One month LIBOR One Month Libor [Member] Represents one month LIBOR. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Target allocation of plan assets Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Net actuarial loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Schedule of other long-term liabilities Other Noncurrent Liabilities [Table Text Block] (Increase) decrease in other current assets Increase (Decrease) in Other Current Assets Funding status of plans Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Gain (loss) on disposition of business Gain (Loss) on Disposition of Business Creditors Creditors [Member] Creditors Member Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Public Utility [Axis] Public Utility [Axis] Proceeds from sale of oil and gas Proceeds from Sale of Oil and Gas Property and Equipment SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] 5.5% Senior Notes due 2021 Senior Notes550 Percent Due2021 [Member] Represents the senior notes payable that bear an interest rate of 5.50 percent and will mature in 2021. Amounts due from joint interest partners Due from Joint Ventures Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Prepaid expenses Prepaid Expense, Current Schedule of disaggregated revenue Disaggregation of Revenue [Table Text Block] 2026 Long-Term Debt, Maturity, Year Five Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Successor common stock issued for a backstop commitment premium pursuant to the Plan Successor Common Stock Issued For A Backstop Commitment Premium Successor Common Stock Issued For A Backstop Commitment Premium 48 Month Period Derivative Instrument, Period Three [Member] Derivative Instrument, Period Three Aggregate number of common stock shares authorized for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Operating cash flows Operating Lease, Payments Debtor-in-possession financing Debtor-in-Possession Financing, Amount Arranged Deficiency payment on a pipeline delivery contract Deficiency Payment On Pipeline Delivery Contract Deficiency Payment On Pipeline Delivery Contract Two California Refineries Two California Refineries [Member] Two California Refineries 2025 Contractual Obligation, to be Paid, Year Four Purchase price Business Combination, Consideration Transferred Acquisition of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Acquisition, Redeemable Noncontrolling Interest In Net Income (Loss) Of Acquisition, Redeemable Principal amount of debt Total Long-term Debt, Gross Debt instrument, covenant leverage ratio Consolidated Total Net Leverage Ratio Debt Instrument Covenant Leverage Ratio Debt Instrument Covenant Leverage Ratio Finance Finance Lease, Right-of-Use Asset, after Accumulated Amortization Percentage of principal amount at which notes can be redeemed in case of change control Debt Instrument Redemption Price Chang Of Control Percentage Debt Instrument Redemption Price Chang Of Control Percentage Liabilities reclassified as held for sale Asset Retirement Obligation, Liabilities Reclassified As Held For Sale Asset Retirement Obligation, Liabilities Reclassified As Held For Sale Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Changes in tax attributes Effective Income Tax Rate Reconciliation, Changes In Tax Attributes, Percent Effective Income Tax Rate Reconciliation, Changes In Tax Attributes, Percent TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Other Other Accrued Liabilities, Current Number of non-executive employees Share-based Payment Arrangement, Plan Modification, Number of Grantees Affected 2026 Lessee, Operating Lease, Liability, to be Paid, Year Five Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Revenue Recognition Concentration Risk [Line Items] Property, Plant and Equipment Property, Plant and Equipment, Net [Abstract] Asset retirement obligation, period decrease Asset Retirement Obligation, Period Increase (Decrease) Schedule of other current assets, net Schedule of Other Current Assets [Table Text Block] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] NGLs Propane [Member] EARNINGS PER SHARE Earnings Per Share [Text Block] Debt restructuring Effective Income Tax Rate Reconciliation, Debt Restructuring, Percent Effective Income Tax Rate Reconciliation, Debt Restructuring, Percent Impairment charges related to ROU assets Operating Lease, Impairment Loss Repurchases of common stock Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method OPERATING EXPENSES Operating Expenses [Abstract] Treasury stock acquired, average price per share (in dollar per share) Treasury Stock Acquired, Average Cost Per Share Changes in accrued capital investments Increase Decrease In Capital Investment Accrual Represents the information pertaining to changes in capital investment accruals 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Crude Oil Hedge Positions Energy Related Derivative [Member] Minimum Minimum [Member] Cost of special termination benefits Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Month 25 Through Month 36 Derivative Instrument, Period Two [Member] Derivative Instrument, Period Two 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Idle well fees Idle Well Fees Idle Well Fees LIBOR Applicable Margin LIBOR Applicable Margin [Member] LIBOR Applicable Margin General and administrative expenses Selling, General and Administrative Expense Q1 2022 First Quarter Production2022 [Member] First Quarter Production2022 Debt issuance costs, net Debt Issuance Costs, Net Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Preferred stock, authorized shares (in shares) Preferred Stock, Shares Authorized Proceeds from asset divestitures Proceeds from Sale of Productive Assets Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate DIVESTITURES AND ACQUISITIONS Acquisitions and Divestitures [Text Block] The entire disclosure for acquisitions and divestitures. Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Deferred Tax Liabilities, federal benefit of state income taxes Deferred Tax Liabilities, Federal Benefit Of State Income Taxes Deferred Tax Liabilities, Federal Benefit Of State Income Taxes Schedule of supplemental balance sheet information related to operating leases Lease Operating Balance Sheet Presentation And Other Information [Table Text Block] The tabular disclosure of the presentation of the operating lease balance sheet accounts and other information. 2025 Long-Term Debt, Maturity, Year Four Issuance of common stock Stock Issued During Period, Value, New Issues First 24 Months Derivative Instrument, Period One [Member] Derivative Instrument, Period One Revenue Recognition Revenue [Policy Text Block] Amounts recognized on the balance sheet Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Line of Credit Line of Credit [Member] STOCK-BASED COMPENSATION Share-based Payment Arrangement [Text Block] Senior Notes (Unsecured) Senior Notes [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Common stock dividends Payments of Ordinary Dividends, Common Stock Non-cash commodity derivative loss, excluding noncontrolling interest Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Parent Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Portion Attributable To Parent Leases Lessee, Leases [Policy Text Block] Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization ECR Earning Credit Rate [Member] Earning Credit Rate Member CRC shares issued to Ares-led investor group in a private placement (in shares) Stock Issued During Period, Shares, New Issues Joint Venture With Macquarie Infrastructure And Real Assets Inc Joint Venture With Macquarie Infrastructure And Real Assets Inc [Member] Represents the information pertaining to joint venture with Macquarie Infrastructure and Real Assets Inc (MIRA). 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to Parent [Member] Decrease (increase) in inventories Increase (Decrease) in Inventories OTHER ASSETS Other Assets Common stock, outstanding shares (in shares) Balance at the beginning of the year (in shares) Balance at the end of the year (in shares) Common Stock, Shares, Outstanding Other operating expenses, net Other operating expenses, net Other Operating Income (Expense), Net Purchased Long [Member] Cost of sales Cost of Goods and Services Sold Tax benefit not recognized from net operating loss carryforwards limited from ownership change Operating Loss Carryforwards, Amount Limited From Ownership Change Operating Loss Carryforwards, Amount Limited From Ownership Change Collateral on natural gas purchases Collateral On Natural Gas Purchases, Current Collateral On Natural Gas Purchases, Current Accrued interest on long-term debt Liabilities Subject To Compromise, Accrued Interest Liabilities Subject To Compromise, Accrued Interest Entity Central Index Key Entity Central Index Key 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