Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Revision of Prior Period [Axis] Revision of Prior Period [Axis] Target allocation of plan assets Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Aggregate intrinsic value, beginning balance Aggregate intrinsic value, ending balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Expected contribution in 2021 Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] 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. Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Operating costs Production Costs, Period Cost Q2 2021 Second Quarter Production2021 [Member] Second Quarter Production2021 Statistical Measurement [Domain] Statistical Measurement [Domain] Second Lien Notes Senior Lien [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Distributions paid to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 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 Total current assets Preconfirmation, Current Assets LIABILITIES SUBJECT TO COMPROMISE Preconfirmation, Liabilities Subject to Compromise Security Exchange Name Security Exchange Name Modification of noncontrolling interest Adjustments To Additional Paid In Capital, Modification Of Noncontrolling Interest Adjustments To Additional Paid In Capital, Modification Of Noncontrolling Interest Fair value of plan assets—beginning balance Fair value of plan assets—ending balance Fair value of plan assets Defined Benefit Plan, Plan Assets, Amount MEZZANINE EQUITY Postconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Redeemable Noncontrolling Interest, Equity, Carrying Amount Abstract Total current liabilities Liabilities, Current Curtailment Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment Performance Stock Units Performance Shares [Member] 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 Variable Rate [Domain] Variable Rate [Domain] 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Senior DIP And Junior DIP Credit Agreements Senior DIP And Junior DIP Credit Agreements [Member] Senior DIP And Junior DIP Credit Agreements Change in valuation allowance, net Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Redeemable noncontrolling interests Postconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount Postconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount Payments due to counterparties on commodity contracts Due to Related Parties, Current Operating cash outflows from operating leases Operating Lease, Payments 2023 Long-Term Debt, Maturity, Year Three LIABILITIES SUBJECT TO COMPROMISE Postconfirmation, Liabilities Subject to Compromise J V Partner J V Partner [Member] J V Partner Member Rights Offering Rights Offering [Member] Rights Offering Member Fresh-Start Adjustments [Table] Fresh-Start Adjustments [Table] Accrued liabilities Preconfirmation, Accrued Liabilities Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Employee Notice and Severance Employee Notice and Severance [Member] Employee Notice and Severance [Member] 2021 Lessee, Operating Lease, Liability, to be Paid, Year One Other Other Accrued Liabilities, Noncurrent Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Less: Net income allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic 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 Preferred Stock, Value, Issued Preferred Stock, Value, Issued 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 Total property, plant and equipment, net Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net Accumulated depreciation, depletion and amortization Preconfirmation, Accumulated Depreciation and Amortization Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Borrowing base Line Of Credit Facility, Borrowing Base The amount of money that maybe borrowed based on the value of the collateral the entity pledges. Other comprehensive (loss) income items: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent, Total Other Liabilities, Noncurrent Cancelled or Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price 2014 Revolving Credit Facility 2014 Revolving Credit Facility [Member] 2014 Revolving Credit Facility Member COSTS Cost of Revenue [Abstract] Financing cash outflows from finance leases Finance Lease, Principal Payments Potential total investment commitment in joint venture Commitment Invested To Date In Joint Venture Commitment Invested To Date In Joint Venture Backstop Commitment Agreement Backstop Commitment Agreement [Member] Backstop Commitment Agreement Member 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. Fair value adjustment to asset retirement obligations, current Fresh Start Adjustments Fair Value Adjustment To Asset Retirement Obligations Current Fresh Start Adjustments Fair Value Adjustment To Asset Retirement Obligations Current Debtor-in-possession financing costs Payments For Debtor-In-Possession Financing Costs Payments For Debtor-In-Possession Financing Costs Inventories Total Inventory, Net Other Other Assets, Miscellaneous, Current Additions to capitalized exploratory well costs Capitalized Exploratory Well Cost, Additions Pending Determination of Proved Reserves Concentration risk percentage Concentration Risk, Percentage Award term Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Fair value of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Statement [Line Items] Statement [Line Items] Class of Stock [Domain] Class of Stock [Domain] Fair value of asset retirement obligations Postconfirmation Fair value of asset retirement obligations Postconfirmation Fair value of asset retirement obligations Purchased Long [Member] Debt instrument, term Debt Instrument, Term Fresh-Start Adjustments [Axis] Fresh-Start Adjustments [Axis] Statement [Table] Statement [Table] Deferred Tax Assets, deferred compensation and benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Interest cost on projected benefit obligation Defined Benefit Plan, Interest Cost Type of Restructuring [Domain] Type of Restructuring [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Schedule of financial performance covenants Debt Instrument, Financial Performance Covenants [Table Text Block] The tabular disclosure of debt instruments financial performance covenants. Debtor-in-possession financing Postconfirmation, Debtor-in-Possession Financing Warrant exercise price (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Interest not paid Debt Instrument, Interest Not Paid Debt Instrument, Interest Not Paid Other revenue Interest [Member] It represents Interest income. Entity Small Business Entity Small Business Transportation costs Transportation Costs [Member] Transportation Costs Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Trading revenue Marketing, Trading, and Other [Member] Marketing, Trading, and Other Swaps Swap [Member] New common stock issued (in shares) Plan Of Reorganization Common Stock Shares New Issues Plan Of Reorganization Common Stock Shares New Issues Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Prepaid expenses Prepaid Expense, Current Current portion Asset retirement obligations Asset Retirement Obligation, Current Fresh Start Adjustments Fresh Start Adjustments [Member] Fresh Start Adjustments Member Amendment Flag Amendment Flag Schedule of Asset Impairments Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] Aggregate number of common stock shares authorized for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares available for future issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Nondeductible compensation, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Compensation, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Compensation, Percent Other Other Accrued Liabilities, Current Long-term obligation Fresh-Start Adjustment Long-term Obligation Fresh-Start Adjustment Long-term Obligation Distributions to noncontrolling interest holders Payments of Ordinary Dividends, Noncontrolling Interest Debtor-in-possession financing Preconfirmation, Debtor-in-Possession Financing Stock-Based Incentive Plans Compensation Related Costs, Policy [Policy Text Block] Class B preferred interest Series B Preferred Stock [Member] Accrued liabilities current [abstract] Accrued Liabilities, Current [Abstract] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Accumulated deficit Postconfirmation, Retained Earnings (Deficit) Net derivative loss (gain) from commodity contracts Derivative, Gain (Loss) on Derivative, Net Fair Value Measurement [Domain] Fair Value Measurement [Domain] After the First Anniversary Date, Before Second Anniversary Date Debt Instrument, Redemption, Period Three [Member] Derivative Instruments Derivatives, Policy [Policy Text Block] Successor additional paid-in capital Additional paid-in capital Postconfirmation, Additional Paid-in Capital SUBSEQUENT EVENTS Subsequent Events [Text Block] Repurchase value of the principal amounts of senior debt Early Repayment of Senior Debt Accounts payable Postconfirmation, Accounts Payable Derivative, period Derivative, Terms, Period Derivative, Terms, Period Schedule of fresh-start adjustments Schedule of Fresh-Start Adjustments [Table Text Block] Other Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Weighted-Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Dilutive effect of potentially dilutive securities (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] 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 Q4 2021 Fourth Quarter Production 2021 [Member] Fourth Quarter Production 2021 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two State and Local Jurisdiction State and Local Jurisdiction [Member] CASH FLOW FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Fifth Year Debt Instrument, Redemption, Period Six [Member] Debt Instrument, Redemption, Period Six General and administrative expenses Selling, General and Administrative Expense Trading revenue Marketing And Trading [Member] Marketing And Trading Schedule of operating lease costs, including amounts capitalized to property, plant and equipment Lease, Cost [Table Text Block] 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Add: Unrestricted cash Postconfirmation Unrestricted Cash Current Postconfirmation Unrestricted Cash Current OTHER ASSETS Other Assets, Noncurrent Plan Name [Axis] Plan Name [Axis] Total equity Preconfirmation Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Preconfirmation Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure OTHER ASSETS Postconfirmation, Other Assets Concentration Risk [Table] Concentration Risk [Table] Number of new directors Plan Of Reorganization, Number Of New Directors Plan Of Reorganization, Number Of New Directors TOTAL ASSETS Assets Accrued liabilities Fresh-Start Adjustment, Increase (Decrease), Accrued Liabilities Union employees Union Employees [Member] Union employees member Concentration of Customers Major Customers, Policy [Policy Text Block] TOTAL LIABILITIES AND EQUITY Postconfirmation, Liabilities and Stockholders' Equity NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] 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 Finance Leases Finance Lease, Liability, Payment, Due [Abstract] Estimated future undiscounted benefit payments Defined Benefit Plan, Expected Future Benefit Payment [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Number of plants Number Of Low Temperature Separation Plants Number Of Low Temperature Separation Plants Summary of common stock issuances Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] MEZZANINE EQUITY Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Schedule of purchase obligations on a discounted basis Contractual Obligation, Fiscal Year Maturity [Table Text Block] 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 Summary of changes in cash and stock-settled Performance Stock Units (PSUs) Share-based Payment Arrangement, Performance Shares, Activity [Table Text Block] Stock-based compensation expense Employee Benefits and Share-based Compensation Office building and land Land and Building [Member] Less: Other Reorganization Value Other Reorganization Value Other Amounts recognized in other comprehensive income (expense) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Outstanding amount of 2016 Credit Agreement notes that triggers accelerated payment Debt Instrument Covenant, Outstanding Amount, Maturity Trigger The outstanding amount of certain notes that triggers the acceleration of the maturity of debt instrument under a credit agreement. 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 Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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 Level 1 Fair Value, Inputs, Level 1 [Member] Interest and penalties related to uncertain tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Decrease (increase) in inventories Increase (Decrease) in Inventories Netting Derivative Liability, Fair Value, Gross Asset 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. Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] 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] Inventories Postconfirmation, Inventories Reorganization items, net (debtor-in-possession financing costs) Reorganization Items Net Debtor-In-Possession Financing Costs Reorganization Items Net Debtor-In-Possession Financing Costs Contribution from noncontrolling interest holders, net Noncontrolling Interest, Increase from Sale of Parent Equity Interest Additional Paid-in Capital Additional Paid-in Capital [Member] Asset Class: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Asset Class [Axis] Asset Class [Axis] 2017 Credit Agreement 2017 Credit Agreement [Member] 2017 Credit Agreement Member Charged to expense Capitalized Exploratory Well Cost, Charged to Expense Dry hole expenses Results of Operations, Dry Hole Costs Unproved properties Impairment Of Oil And Gas Properties, Unproved Properties Impairment Of Oil And Gas Properties, Unproved Properties Schedule of other current assets, net Schedule of Other Current Assets [Table Text Block] 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 Income Taxes Income Tax Disclosure [Abstract] Margin increase, percentage Debt Instrument, Margin Increase, Percentage Debt Instrument, Margin Increase, Percentage Revolving Credit Facility Revolving Credit Facility Revolving Credit Facility [Member] (LOSS) INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest 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 cost of sales Electricity Cost Of Sales [Member] Electricity Cost Of Sales Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Property, Plant and Equipment Property, Plant and Equipment [Member] Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price After Fourth Anniversary Debt Instrument, Period Five [Member] Debt Instrument, Period Five Common stock, authorized shares (in shares) Common Stock, Shares Authorized Summary of changes in cash and stock-settled Restricted Stock Units (RSUs) Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Fair value of total equity upon emergence Total equity Postconfirmation Stockholders Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Postconfirmation Stockholders Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest OTHER ASSETS Fresh-Start Adjustment, Increase (Decrease), Other Assets 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Two 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. Cost of special termination benefits Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Net benefit liability (unfunded status) Defined Benefit Plan, Funded (Unfunded) Status of Plan Derivative Instrument, Period [Axis] Derivative Instrument, Period [Axis] Derivative Instrument, Period Enterprise value Reorganization Value Enterprise Value Reorganization Value Enterprise Value Income Statement [Abstract] Income Statement [Abstract] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] 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 Debt issuance costs Unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Use of Estimates Use of Estimates, Policy [Policy Text Block] 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 Income Tax Authority [Domain] Income Tax Authority [Domain] Debt repurchases Repayments of Subordinated Debt Payments due to counterparties on commodity contracts Due to Related Parties, Noncurrent Ares JV Ares Joint Venture [Member] Represents Ares joint venture (Ares JV). Weighted-average assumptions used to determine benefit obligations and net periodic benefit cost Defined Benefit Plan, Assumptions [Table Text Block] 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. Tax credit carryforwards Income Tax Credits and Adjustments Debtor-in-possession financing, borrowings outstanding Debtor-in-Possession Financing, Borrowings Outstanding Number of well development plan included in the sale of Lost Hills field Oil And Gas, Number Of Development Plan Included In Field Sold The number wells to be drilled in the development program in a field that is being sold. Amortization of deferred gain Amortization Of Deferred Gains And Debt Issuance Cost The amount of amortization of deferred gains and deferred debt issuance costs. Interest-rate contract Interest Rate Cap [Member] Commitment in joint venture for natural gas development Commitment In Joint Venture For Natural Gas Development Commitment In Joint Venture For Natural Gas Development Counterparty Name [Domain] Counterparty Name [Domain] Capital investments Payments to Acquire Property, Plant, and Equipment Reorganization Adjustments Revision of Prior Period, Adjustment [Member] Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Grant Date Fair Value Weighted average grant-date fair value of options outstanding. DEBT Long-term Debt [Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Actual gain (loss) return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Working interest in Lost Hills field sold Percentage of Working Interest Sold The percentage of working interest sold. Number of shares available for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Q3 2021 Third Quarter Production 2021 [Member] Third Quarter Production 2021 Mezzanine Equity - Redeemable Noncontrolling Interest Mezzanine Equity Redeemable Noncontrolling Interest [Member] This element represents mezzanine equity redeemable noncontrolling interest. Deferred Tax Assets, debt Deferred Tax Assets, long-term debt Deferred tax assets, long-term debt Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Number of offshore platforms with decommissioning obligations defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Number Of Offshore Platforms With Decommissioning Obligations Defaulted Impairment charges related to ROU assets Operating Lease, Impairment Loss 2026 to 2030 Payouts Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Other oil and gas property Other Oil And Gas Property [Member] Represents other oil and gas property. Schedule of inventories Schedule of Inventory, Current [Table Text Block] Postponement period Development Joint Venture, Postponement Period Development Joint Venture, Postponement Period Entity [Domain] Entity [Domain] Shares cancelled for taxes Payment, Tax Withholding, Share-based Payment Arrangement ACQUISITIONS AND DIVESTITURES ACQUISITIONS AND DIVESTITURES No definition available. Period before maturity of the 2016 Credit Agreement that triggers accelerated payment Period Before Maturity of Second Debt, Maturity of First Debt that Triggers Accelerated Payment Period before maturity of the second debt that triggers accelerated payment when the first debt matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] 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. Derivative, allocation percent Derivative, Allocation Percent Derivative, Allocation Percent Expected useful lives Property, Plant and Equipment, Useful Life Property, Plant and Equipment Property, Plant and Equipment, Net [Abstract] Reversal of more-likely-than-not basis Unrecognized Tax Benefits, Decrease Resulting From Prior Period Tax Positions, Portion From Reversal Of More-Likely-Than-Not Basis Unrecognized Tax Benefits, Decrease Resulting From Prior Period Tax Positions, Portion From Reversal Of More-Likely-Than-Not Basis Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Mezzanine equity Net (loss) income attributable to noncontrolling interests Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Redeemable Fair Value Disclosures [Abstract] Class C common interest Common Class C [Member] Lease liability Lease, Liability, Current Lease, Liability, Current Cash restricted under our joint venture agreements Restricted Cash and Cash Equivalents Reorganizations [Abstract] Decrease (increase) in other current assets Increase (Decrease) in Other Current Assets Other upstream acquisitions Series of Individually Immaterial Business Acquisitions [Member] 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. Face value of debt reduction through payment or repurchase Debt Instrument, Repurchased Face Amount Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Subscription Right, Backstop Commitment Agreement Subscription Right, Backstop Commitment Agreement [Member] Subscription Right, Backstop Commitment Agreement Operating Operating Lease, Liability, Current ROU assets obtained in exchange for new finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Maximum commitment contribution Investment commitment in joint venture Total Investment Commitment In Joint Venture, Maximum Represents the total maximum investment commitment in the joint venture. 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 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] Distribution to noncontrolling interest holder Debtor Reorganization Items, Distribution To Noncontrolling Interest Holder Debtor Reorganization Items, Distribution To Noncontrolling Interest Holder Number of wells agreed for drilling under JV program Number Of Wells Agreed For Drilling Number Of Wells Agreed For Drilling 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. Customer [Domain] Customer [Domain] Trade receivables Postconfirmation, Receivables, Net Additional paid-in capital Additional Paid in Capital, Common Stock Total current liabilities Preconfirmation, Current Liabilities Entity Registrant Name Entity Registrant Name Subsequent Event Type [Domain] Subsequent Event Type [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition [Line Items] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Revenue Recognition Concentration Risk [Line Items] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Asset impairments Total Asset Impairment Charges Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Less: Interest Finance Lease, Liability, Undiscounted Excess Amount Debtor-in-possession financing, amount arranged Debtor-in-Possession Financing, Amount Arranged 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 Equity Securities Equity Securities [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code 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 Shared First Priority Lien Shared First Priority Lien [Member] Shared First Priority Lien [Member] Equity attributable to noncontrolling interests Postconfirmation Stockholders Stockholders' Equity Attributable to Noncontrolling Postconfirmation Stockholders Stockholders' Equity Attributable to Noncontrolling Predecessor Preconfirmation [Abstract] Other current assets, net Preconfirmation Other Assets Current Preconfirmation Other Assets Current Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Successor warrants Postconfirmation, Preferred and Common Stock Held in Treasury Deferred Tax Assets, Net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance After 90 Days, Before First Anniversary Date Debt Instrument, Redemption, Period Two [Member] Restructuring Type [Axis] Restructuring Type [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 Subscription Rights Subscription Rights [Member] Subscription Rights Member Total other comprehensive (loss) income Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Warrant outstanding (in shares) Class of Warrant or Right, Outstanding Derivative Instrument, Period [Domain] Derivative Instrument, Period [Domain] Derivative Instrument, Period Domain Deferred Tax Assets, net operating loss carryforwards and credits Deferred Tax Assets, Operating Loss Carryforwards Debt instrument face amount Aggregate principal amount issued Debt Instrument, Face Amount Working interest acquired by MIRA Joint Venture Working Interest Acquired JointVentureWorkingInterestAcquired Other current assets, net Other current assets, net Other Assets, Current Cancelled or Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Asset Class [Domain] Asset Class [Domain] Other Termination Benefits Other Termination Benefits [Member] Other Termination Benefits [Member] Equity [Abstract] Interest rate to be in place to receive payment Derivative, Cap Interest Rate Total current assets Postconfirmation, Current Assets Principal maturities of long-term debt Maturities of Long-term Debt [Abstract] Cash-Settled PSU awards Cash Settled Performance Stock Unit Awards [Member] Cash settled performance stock unit awards member Supplementary Disclosure of Noncash Investing and Financing Activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Proceeds from debtor-in-possession facilities Proceed From Debtor-in-Possession Financing Proceed From Debtor-in-Possession Financing Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Major Customers Customer Concentration Risk [Member] Reclassification of realized losses on pension and postretirement to income, tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax Weighted-average common shares outstanding — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Derivative Contract [Domain] Derivative Contract [Domain] Letters of Credit Letter of Credit [Member] Predecessor common stock Preconfirmation, Common Stock Dispositions, reduction to PP&E Asset Retirement Obligation, Dispositions This element represents amount of the increase (decrease) in the amount of asset retirement obligations for the period associated with acquisitions activity. After the Third Anniversary Date, Before Fourth Anniversary Date Debt Instrument, Redemption, Period Five [Member] Expected cost remaining Restructuring and Related Cost, Expected Cost Remaining 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 Debt Disclosure [Abstract] Debt Disclosure [Abstract] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Successor common stock Par value Postconfirmation, Common Stock Net cash (used) provided by financing activities Net Cash Provided by (Used in) Financing Activities Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Warrant Adjustments to Additional Paid in Capital, Warrant Issued Thereafter Contractual Obligation, to be Paid, after Year Five New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] International equity International Equity [Member] Represents information of information equity. Unrecognized tax benefits – beginning balance Unrecognized tax benefits – ending balance Unrecognized Tax Benefits Counterparty Name [Axis] Counterparty Name [Axis] Common stock, value issued Common Stock, Value, Issued 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Modification of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Return, Nonredeemable Noncontrolling Interest In Net Income (Loss) Of Return, Nonredeemable Document Fiscal Year Focus Document Fiscal Year Focus Proceeds from debt Proceeds from Issuance of Secured Debt Fair Value of Derivatives Offsetting Assets [Line Items] 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. Benefit obligation—beginning balance Benefit obligation—beginning balance Defined Benefit Plan, Benefit Obligation Entity Current Reporting Status Entity Current Reporting Status After Fifth Anniversary Debt Instrument, Period Six [Member] Debt Instrument, Period Six Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Unrestricted cash Unrestricted Cash Unrestricted Cash OTHER ASSETS Preconfirmation, Other Assets Commitment contributed Total Investment Commitment In Joint Venture, Funded to Date Total Investment Commitment In Joint Venture, Funded to Date Present value of lease liabilities Operating Lease, Liability TOTAL LIABILITIES AND EQUITY Preconfirmation, Liabilities and Stockholders' Equity 2024 Contractual Obligation, to be Paid, Year Four Total equity attributable to common stock Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity Redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Debt Instrument [Line Items] Debt Instrument [Line Items] Total equity (deficiency) attributable to common stock Stockholders' Equity Attributable to Parent Deferred Tax Asset, business interest expense carryforward Deferred Tax Asset, Interest Carryforward Purchase price Business Combination, Consideration Transferred Working, surface and mineral interests acquired Area of Land Total derivatives Derivative Assets (Liabilities), at Fair Value, Net Tier 1 Warrants Tier 1 Warrants [Member] Tier 1 Warrants Member Entity Address, City or Town Entity Address, City or Town 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. Accrued employee-related costs Employee-related Liabilities, Current Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Total costs Costs and Other Deductions Total costs of sales, operating expenses, and other operating expenses for the period. Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Projected healthcare cost rate in 2020 Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Inventories Preconfirmation, Inventories Equity Attributable to Common Stock Parent [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Five Other assets Other Assets [Member] Pre-tax unamortized deferred gain on early extinguishment of debt and deferred issuance costs Gain (Loss) on Repurchase of Debt Instrument Short-term lease costs Short-term Lease, Cost Actuarial (losses) gains associated with pension and postretirement plans, tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Working, surface and mineral interests in the formerly Elk Hills field Working Surface And Mineral Interests In Elk Hills Field [Member] Represents the working, surface and mineral interests in the Elk Hills field. Deferred Tax Assets, valuation allowance Deferred Tax Assets, Valuation Allowance Cash acquired Plan Of Reorganization, Settlement Agreement, Cash Paid Plan Of Reorganization, Settlement Agreement, Cash Paid Reclassification to property, plant and equipment Reclassification to Well, Facilities, and Equipment Based on Determination of Proved Reserves Common stock issued as part of the acquisition of Elk Hills unit Common Stock Issued On Acquisition Of Elk Hills Common Stock Issued On Acquisition Of Elk Hills Reorganization items, net (non-cash) Total non-cash reorganization items Reorganization Items Net Non-Cash Reorganization Items Net Non-Cash Expected term (in years) Warrants and Rights Outstanding, Term Add: Current liabilities Postconfirmation, Current Liabilities Excluding Asset Retirement Obligations Postconfirmation, Current Liabilities Excluding Asset Retirement Obligations Natural gas power and Gas processing plants Natural Gas Power And Gas Processing Plants [Member] Represents Natural Gas Power And Gas Processing Plants. Finance Finance Lease, Liability, Noncurrent OTHER LONG-TERM LIABILITIES Postconfirmation, Other Noncurrent Obligations Leases [Abstract] Leases [Abstract] Taxes other than on income Taxes, Miscellaneous Organizational Changes Organizational Changes [Member] Organizational Changes [Member] MEZZANINE EQUITY Preconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Preconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount Abstract Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Assets, Current Predecessor additional paid-in capital Preconfirmation, Additional Paid-in Capital Net operating loss carryforwards Operating Loss Carryforwards Net (loss) income attributable to common stock per share Earnings Per Share [Abstract] Earnings Per Share [Abstract] Tax effects of temporary differences resulting in deferred income taxes Schedule of Deferred Tax Assets and Liabilities [Table Text Block] 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 State income taxes, net Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Impact of fresh start accounting Asset Retirement Obligation, Fresh Start Accounting Impact Asset Retirement Obligation, Fresh Start Accounting Impact Crude Oil Hedge Positions Energy Related Derivative [Member] Document Fiscal Period Focus Document Fiscal Period Focus Reclassification of realized losses on pension and postretirement to income Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax 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 Net (loss) income available to common stockholders Net Income (Loss) Available to Common Stockholders, Diluted Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Long Term Purchase and Contractual Obligation Long Term Purchase And Contractual Obligation [Member] Represents the information pertains to long term purchase and contractual obligations. Liabilities Subject to Compromise, Total Liabilities Subject to Compromise CURRENT LIABILITIES Preconfirmation, Current Liabilities [Abstract] Second Lien Term Loan Second Lien Notes [Member] Second Lien Notes Percentage of principal amount at which notes can be redeemed prior to their maturity date Debt Instrument, Redemption Price, Percentage 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 Entity Filer Category Entity Filer Category Common Stock Common Stock [Member] 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 Product and Service [Domain] Product and Service [Domain] TOTAL LIABILITIES AND EQUITY Fresh-Start Adjustment, Increase (Decrease), Liabilities and Stockholders' Equity Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Reversal or re-evaluated tax return filing Unrecognized Tax Benefits, Decrease Resulting From Prior Period Tax Positions, Portion From Reversal Of Re-Evaluated Tax Return Filing Unrecognized Tax Benefits, Decrease Resulting From Prior Period Tax Positions, Portion From Reversal Of Re-Evaluated Tax Return Filing Weighted-average discount rate Finance Lease, Weighted Average Discount Rate, Percent Production Sharing Type Contracts Production Sharing Type Contracts [Abstract] No definition available. 2014 Revolving Credit Facility (Shared First Priority Lien) Secured Debt [Member] Liabilities subject to compromise gross Liabilities Subject To Compromise, Debt Liabilities Subject To Compromise, Debt Class of Treasury Stock [Table] Class of Treasury Stock [Table] On Or After February 1, 2023 Debt Instrument, Redemption, Period On Or After February 1, 2023 [Member] Debt Instrument, Redemption, Period On Or After February 1, 2023 Amounts recognized on the balance sheet Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Fresh-start adjustment, increase (decrease), liabilities Fresh-Start Adjustment, Increase (Decrease), Liabilities Impact of fresh start accounting Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Nonredeemable Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Nonredeemable TOTAL ASSETS Fresh-Start Adjustment, Increase (Decrease), Assets Stock-Settled PSU awards Stock Settled Performance Stock Unit Awards [Member] Stock settled performance stock unit awards member Revision of Prior Period [Domain] Revision of Prior Period [Domain] Debt instrument, interest rate, stated percentage Interest rate Debt Instrument, Interest Rate, Stated Percentage Joint venture with BSP Joint Venture With Benefit Street Partners [Member] Represents the information pertaining to joint venture with benefit street partners of divestitures and other. Total current liabilities Postconfirmation, Current Liabilities Schedule of defined benefit pension plans with accumulated benefit obligations in excess of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Class A common interest Common Class A [Member] Diluted EPS calculation Earnings Per Share, Diluted [Abstract] Total Contractual Obligation, Including Undiscounted Excess Amount Contractual Obligation, Including Undiscounted Excess Amount Fair Value, Other Financial Instruments [Abstract] Fair Value, Other Financial Instruments [Abstract] No definition available. Other revenue Product and Service, Other [Member] Trade receivables Preconfirmation, Receivables, Net Warrant issued to a joint venture partner Warrant Issued To A Joint Venture Partner Warrant Issued To A Joint Venture Partner (Decrease) increase in cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Variable rate indebtedness amount Derivative, Amount of Hedged Item LONG-TERM DEBT, NET Preconfirmation, Long-term Debt Cash Postconfirmation, Cash and Cash Equivalents Debtor reorganization items, restricted cash and cash equivalents Debtor Reorganization Items, Restricted Cash and Cash Equivalents Debtor Reorganization Items, Restricted Cash and Cash Equivalents Gas processing plant capacity Property, Plant and Equipment, Gas Processing Plant Capacity Represents the capacity of gas processing plant. Reorganization items, net Total reorganization items, net Debtor Reorganization Items, Other Expense (Income) Public Utility [Axis] Public Utility [Axis] Subsequent Events [Abstract] Subsequent Events [Abstract] Payments of cash-based portion of awards Share-based Payment Arrangement, Cash Used to Settle Award Number of finance lease contracts Lessee, Finance Lease, Number Of Lease Contracts Lessee, Finance Lease, Number Of Lease Contracts CURRENT ASSETS Preconfirmation, Current Assets [Abstract] 2025 Long-Term Debt, Maturity, Year Five Ownership [Domain] Ownership [Domain] Assumed long-term rate of return on assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 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. Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Stock Options Equity Option [Member] 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. Total shareholders' equity (deficiency) Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total revenues Revenues Class of Stock [Axis] Class of Stock [Axis] Schedule of oil hedge positions Schedule of Derivative Instruments [Table Text Block] Weighted-average price (in dollars per barrel) Derivative, Average Price Risk Option Strike Price Acquisition of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Acquisition, Nonredeemable Noncontrolling Interest In Net Income (Loss) Of Acquisition, Nonredeemable Accrued liabilities Accrued liabilities Accrued Liabilities, Current Diluted (in dollars per share) Diluted EPS (in dollars per share) Earnings Per Share, Diluted Predecessor preferred stock Preconfirmation, Preferred Stock ECR Ecr Corporate Holdings [Member] This member represents ECR corporate holdings Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] NONCONTROLLING INTERESTS Noncontrolling Interest [Line Items] Accumulated other comprehensive loss Postconfirmation, Accumulated Other Comprehensive Income (Loss) 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 Schedule of debt Schedule of Long-term Debt Instruments [Table Text Block] Fresh-Start Adjustment [Line Items] Fresh-Start Adjustment [Line Items] Entity Address, Address Line One Entity Address, Address Line One Entity Emerging Growth Company Entity Emerging Growth Company After the Second Anniversary Date, Before Third Anniversary Date Debt Instrument, Redemption, Period Four [Member] Gross Amounts at Fair Value Derivative Liability, Fair Value, Gross Liability Utility Plant [Domain] Utility Plant [Domain] Net Income (Loss) Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Unamortized deferred gain and issuance costs, net Debtor Reorganization Items, Gain (Loss) on Settlement of Other Claims, Net Maximum Maximum [Member] Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Preferred stock, authorized shares (in shares) Preferred Stock, Shares Authorized Equity Attributable to Noncontrolling Interests Equity Attributable to Noncontrolling Interests Noncontrolling Interest [Member] Upfront fees on commitment Debtor-In-Possession Financing, Upfront Commitment Fees Debtor-In-Possession Financing, Upfront Commitment Fees Effective tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Allowance for credit losses Accounts Receivable, Allowance for Credit Loss Other non-operating expenses Other Nonoperating Expense Postretirement Benefits Other Postretirement Benefits Plan [Member] Trading Symbol Trading Symbol Colony Capital, Inc. Colony Capital, Inc. [Member] Colony Capital, Inc. [Member] 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. Redeemable noncontrolling interests Preconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount Preconfirmation Redeemable Noncontrolling Interest, Equity, Carrying Amount Other non- producing property and equipment Other Capitalized Property Plant and Equipment [Member] Entity Shell Company Entity Shell Company Proceeds from Second Lien Term Loan Proceeds from Issuance of Medium-term Notes 2022 Finance Lease, Liability, to be Paid, Year Two Entity Public Float Entity Public Float Schedule of changes in noncontrolling interests Non-redeemable and Redeemable Noncontrolling Interest [Table Text Block] Tabular disclosure of non-redeemable and redeemable noncontrolling interest. Document Type Document Type Net (payments) proceeds on settled commodity derivatives Gain (Loss) on Sale of Commodity Contracts 2025 Contractual Obligation, to be Paid, Year Five ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Less: Interest Contractual Obligation, Undiscounted Excess Amount Contractual Obligation, Undiscounted Excess Amount Decrease in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Bond funds Bond Funds [Member] Mutual funds that invest in bonds issued by municipalities, corporations, and the US government and its agencies. 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 Retirement Benefits [Text Block] Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 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 Level 3 Fair Value, Inputs, Level 3 [Member] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Expenses under provisions of defined contribution and supplemental plans Defined Contribution Plan And Supplemental Plan, Cost Defined Contribution Plan And Supplemental Plan, Cost Other current assets Other Current Assets [Member] Present value of purchase obligations Contractual Obligation Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] Actuarial (losses) gains associated with pension and postretirement plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Net Fair Value Derivative Asset January - October 2023 Production2023 [Member] Production2023 Line of Credit Line of Credit [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Pension and Postretirement Benefit Plans Pension and Other Postretirement Plans, Policy [Policy Text Block] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Proceeds from issuance of debt Proceeds from Issuance of Debt Term Loan Term Loan [Member] Represents Term loan member Total equity attributable to common stock Postconfirmation, Stockholders' Equity Cancelled or Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Calls Call Option [Member] OPERATING (LOSS) INCOME Operating Income (Loss) 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 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 Variable Rate [Axis] Variable Rate [Axis] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Net change Reorganization Items Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five 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 Entity Address, State or Province Entity Address, State or Province Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Accounts payable Accounts Payable, Current Elimination of Predecessor equity Elimination Of Predecessor Equity Elimination Of Predecessor Equity Sublease income Sublease Income Derivative assets Derivative Asset, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Proceeds from Second Lien Notes used to reduce principal amount of senior note debt through exchange Debt Instrument, Repurchased Or Exchange Face Amount Face (par) amount of the original debt instrument that was repurchased or exchanged. Operating Operating Lease, Right-of-Use Asset Repayments of lines of credit Repayments of Lines of Credit Offsetting Assets [Table] Offsetting Assets [Table] Joint venture investment period Joint Venture, Investment Period Joint Venture, Investment Period NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER No definition available. Net gain on early extinguishment of debt Net gain on early extinguishment of debt Gain (Loss) on Extinguishment of Debt Deferred Tax Liabilities, property, plant and equipment differences Deferred Tax Liabilities, Property, Plant and Equipment BSP JV Benefit Street Partners [Member] Represents Benefit Street Partners (BSP). Additional Letters Of Credit Additional Letters Of Credit [Member] Additional Letters Of Credit 2021 Finance Lease, Liability, to be Paid, Year One EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] 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 Daily volume (in Bbl) Derivative, Nonmonetary Notional Amount Summary of the activity of the asset retirement obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Accumulated depreciation, depletion and amortization Postconfirmation, Accumulated Depreciation and Amortization Customer [Axis] Customer [Axis] Cash-Settled Restricted Stock Cash 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 cash at the time of vesting. 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. Loss recorded in other non-operating expense Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Income Taxes Income Tax, Policy [Policy Text Block] Total lease costs Lease, Cost Debt issuance costs Payment for Debt Extinguishment or Debt Prepayment Cost Schedule of other long-term liabilities Other Noncurrent Liabilities [Table Text Block] Other Payments for (Proceeds from) Other Investing Activities Share-based compensation, net APIC, Share-based Payment Arrangement, Increase for Cost Recognition Beginning balance Ending balance Asset Retirement Obligation Number of wells Number Of Wells Number Of Wells Assumed health care cost trend rates Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] Thereafter Long-Term Debt, Maturity, after Year Five Oil and natural gas sales Oil and natural gas sales Revenue from Contract with Customer, Excluding Assessed Tax PROPERTY, PLANT AND EQUIPMENT Postconfirmation Property And Equipment Gross Postconfirmation Property And Equipment Gross Payments received Payments of Derivative Issuance Costs Business Acquisition [Axis] Business Acquisition [Axis] Geographical [Domain] Geographical [Domain] Settlement costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Postretirement and Other Benefit Plans Disclosure Defined Benefit Plan Disclosure Defined Benefit Plan Disclosure [Line Items] Fixed income Fixed Income Funds [Member] Alpine JV Alpine JV [Member] Alpine JV [Member] NET LOSS (INCOME) ATTRIBUTABLE TO NONCONTROLLING INTERESTS Net Income (Loss) Attributable to Noncontrolling Interest [Abstract] Proceeds from long-term lines of credit Proceeds from Long-term Lines of Credit One month LIBOR One Month Libor [Member] Represents one month LIBOR. Derivatives Derivative Instruments and Hedging Activities Disclosures [Line Items] Accrued interest Interest Payable, Current Entity Voluntary Filers Entity Voluntary Filers Credit Facility [Axis] Credit Facility [Axis] Funding provided by MIRA for development of properties Joint Venture Investment Funding Percentage Joint Venture Investment Funding Percentage Creditors Creditors [Member] Creditors Member Benefit Obligation Assumptions Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Fair value of derivatives Derivative Liability, Noncurrent Deferred compensation and postretirement Deferred Compensation Liability, Current and Noncurrent 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. Other expenses, net Other Operating Income (Expense), Net Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Increase (decrease) in Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] LONG-TERM DEBT, NET Debt Instrument Carrying Amount Noncurrent Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as noncurrent. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. TOTAL ASSETS Postconfirmation, Assets 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 Issuance of common stock Proceeds from Issuance of Common Stock 48 Month Period Derivative Instrument, Period Three [Member] Derivative Instrument, Period Three Prior to 90 Days Debt Instrument, Redemption, Period One [Member] Schedule of calculation of basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Two California Refineries Two California Refineries [Member] Two California Refineries Deferred Tax Assets, asset retirement obligations Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations Incurred cost Restructuring and Related Cost, Incurred Cost LEASES Lessee, Finance Leases [Text Block] Repayments of debt Repayments of Debt Acquisition of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Acquisition, Redeemable Noncontrolling Interest In Net Income (Loss) Of Acquisition, Redeemable Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Consolidated Total Net Leverage Ratio Debt Instrument Covenant Leverage Ratio Debt Instrument Covenant Leverage Ratio Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Net cash (used) provided by operating activities Net Cash Provided by (Used in) Operating Activities Entity Central Index Key Entity Central Index Key Line of current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Derivative Instrument [Axis] Derivative Instrument [Axis] Other long-term liabilities Other Noncurrent Liabilities [Member] Changes in tax attributes, net Effective Income Tax Rate Reconciliation, Changes In Tax Attributes, Percent Effective Income Tax Rate Reconciliation, Changes In Tax Attributes, Percent Senior Notes (Unsecured) Senior Notes [Member] Certain executives Management [Member] Geographical [Axis] Geographical [Axis] CURRENT LIABILITIES Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 2023 Contractual Obligation, to be Paid, Year Three 2024 Long-Term Debt, Maturity, Year Four Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Debt restructuring, net Effective Income Tax Rate Reconciliation, Debt Restructuring, Percent Effective Income Tax Rate Reconciliation, Debt Restructuring, Percent Accrued liabilities Postconfirmation, Accrued Liabilities Second Lien Term Loan, FHP Notes, And Revolving Credit Facility Second Lien Term Loan, FHP Notes, And Revolving Credit Facility [Member] Second Lien Term Loan, FHP Notes, And Revolving Credit Facility Changes in capital investment accruals Increase Decrease In Capital Investment Accrual Represents the information pertaining to changes in capital investment accruals Month 25 Through Month 36 Derivative Instrument, Period Two [Member] Derivative Instrument, Period Two LIBOR Applicable Margin LIBOR Applicable Margin [Member] LIBOR Applicable Margin JOINT VENTURES Equity Method Investments and Joint Ventures Disclosure [Text Block] NGLs Propane [Member] Issuance of common stock Stock Issued During Period, Value, New Issues Asset Retirement Obligations Roll forward Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] DIVESTITURES AND ACQUISITIONS Acquisitions and Divestitures [Text Block] The entire disclosure for acquisitions and divestitures. Debtor-in-possession financing costs Debtor Reorganization Items, Debtor-in-Possession Facility Financing Costs Fair value of derivatives Derivative Liability, Current Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Title of 12(b) Security Title of 12(b) Security Fair value of long-term debt Postconfirmation, Long-term Debt Schedule of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Puts Put Option [Member] 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. First 24 Months Derivative Instrument, Period One [Member] Derivative Instrument, Period One Schedule of maturities of our financing lease liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] 2021 Contractual Obligation, to be Paid, Year One 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] Depreciation, depletion and amortization Depreciation, Depletion and Amortization Accumulated deficit Preconfirmation, Retained Earnings (Deficit) Percentage of common interest held by ECR Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Liability recorded for unrecognized tax benefits Unrecognized Tax Benefits, Period Increase (Decrease) Amounts due from joint interest partners, net Due from Joint Ventures Asset divestitures Proceeds from sale of non-core assets Proceeds from Sale of Productive Assets ECR Earning Credit Rate [Member] Earning Credit Rate Member Revenue not from contract with customer Revenue Not from Contract with Customer Product and Service [Axis] Product and Service [Axis] Reorganization value Reorganization Value 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). Total PP&E Property, Plant, and Equipment, Fair Value Disclosure 2025 Finance Lease, Liability, to be Paid, Year Five Commitment in joint venture for natural gas development on funded date Commitment In Joint Venture For Natural Gas Development On Funded Date Commitment In Joint Venture For Natural Gas Development On Funded Date 2022 Long-Term Debt, Maturity, Year Two Position [Domain] Position [Domain] Net (loss) income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Natural gas Natural Gas, Production [Member] Liabilities settled and paid Asset Retirement Obligation, Liabilities Settled Other current assets, net Postconfirmation, Prepaid and Other Current Assets Other long-term Liabilities Postconfirmation Other Long-term Liabilities, Excludes Asset Retirement Liability Postconfirmation Other Long-term Liabilities, Excludes Asset Retirement Liability Unproved oil and natural gas properties Unproved Oil And Gas Properties [Member] Represents the unproved oil and gas properties. Non-cash derivative (loss) gain Unrealized Gain (Loss) on Derivatives EQUITY Preconfirmation, Stockholders' Equity [Abstract] Beginning balance Ending balance Capitalized Exploratory Well Costs Debt Instrument [Axis] Debt Instrument [Axis] Initial commitment Initial Investment Commitment In Joint Venture Initial Investment Commitment In Joint Venture Impact of fresh start accounting Debtor Reorganization Items Gain Loss on Fresh Start Accounting Debtor Reorganization Items Gain Loss on Fresh Start Accounting Disaggregation of revenue Disaggregation of Revenue [Line Items] Fair value adjustment related to noncontrolling interest Noncontrolling Interest, Fair Value Adjustment Noncontrolling Interest, Fair Value Adjustment Current Ratio Debt Instrument Covenant Current Ratio Debt Instrument Covenant Current Ratio Net Fair Value Derivative Liability Applicable margin on Alternate Base Rate loans Debt Instrument Variable Rate Base Rate [Member] Represents alternate base rate Proceeds from divestiture of business Proceeds From Sale Of Productive Assets Including Purchase Price Adjustment Proceeds From Sale Of Productive Assets Including Purchase Price Adjustment Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Variable lease costs Variable Lease, Cost Equity attributable to noncontrolling interests Preconfirmation Stockholders' Equity Attributable to Noncontrolling Preconfirmation Stockholders' Equity Attributable to Noncontrolling Adjustments to reconcile net (loss) income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Projected benefit obligation Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Subsequent Event Subsequent Event [Member] Federal Domestic Tax Authority [Member] Letters of credit outstanding amount Letters of Credit Outstanding, Amount Fresh Start Adjustments Fresh-Start Balance Sheet [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Current liabilities Postconfirmation Current Liabilities, Excludes Asset Retirement Liability Postconfirmation Current Liabilities, Excludes Asset Retirement Liability Revenue Recognition Revenue [Policy Text Block] Schedule of share based compensation expense Schedule Of Share Based Compensation Expense [Table Text Block] Schedule of Share Based Compensation Expense [Table Text Block] Business Combination, Consideration Transferred, Liabilities Incurred ARO liabilities assumed Business Combination, Consideration Transferred, Liabilities Incurred Gross Amounts at Fair Value Estimate of Fair Value Measurement [Member] Gain on asset divestitures Gain on asset divestitures Gain (Loss) on Disposition of Assets Payoff of the 2020 Senior Notes Repayments of Senior Debt Operating Operating Lease, Liability, Noncurrent Financial covenant, liquidity threshold Debt Instrument, Covenant Terms, Liquidity Threshold Debt Instrument, Covenant Terms, Liquidity Threshold Power plant capacity Property, Plant and Equipment, Power Plant Capacity Represents the capacity of power plant. Modification of noncontrolling interest Noncontrolling Interest In Net Income (Loss) Of Return, Redeemable Noncontrolling Interest In Net Income (Loss) Of Return, Redeemable CURRENT ASSETS Assets, Current [Abstract] Minimum asset coverage ratio Debt Instrument Covenant, Asset Coverage Ratio Represents the Asset Coverage Ratio under credit facility agreement. Increase to maximum borrowing capacity with lender approval Line of Credit Facility Contingent Increase to Maximum Borrowing Capacity Increase to maximum borrowing capacity under the credit facility if any one or more of the existing or new lenders agree to provide such increased commitment amount. OTHER LONG-TERM LIABILITIES Preconfirmation, Other Noncurrent Obligations Exploration expense Exploration Expense Exploration Expense Guaranteed deposit account Guaranteed Deposit Account [Member] Represents information pertaining to guaranteed deposit accounts. Commitment fees Debtor-in-Possession Financing, Fee on Unused Borrowings Pension Plan Assets - Gross Plan Assets Gross [Member] Sum of all major categories of plan assets based on the nature and risk of assets in an employer's plan(s). Comprehensive (loss) income attributable to common stock Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2023 Finance Lease, Liability, to be Paid, Year Three Estimated dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Schedule of differences between the U.S. federal income tax rate and the company's effective tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] 2021 Long-Term Debt, Maturity, Year One CURRENT LIABILITIES Postconfirmation, Current Liabilities [Abstract] Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase CRC's working interest if MIRA receives cash distributions equal to a predetermined threshold return Joint Venture Working Interest After Counterparty Return Joint Venture Working Interest After Counterparty Return Legal Entity [Axis] Legal Entity [Axis] City Area Code City Area Code Projected ultimate health care cost trend rates after 2028 Defined Benefit Plan, Health Care Cost Trend Rate On Ninth Year And Thereafter Defined Benefit Plan, Health Care Cost Trend Rate On Ninth Year And Thereafter Income Tax Authority [Axis] Income Tax Authority [Axis] Document Period End Date Document Period End Date Accumulated depreciation, depletion and amortization Fresh-Start Adjustment, Increase (Decrease), Accumulated Depreciation and Amortization Proceeds from Revolving Credit Facility Debtor Reorganization Items Net Proceeds From Revolving Credit Facility Debtor Reorganization Items Net Proceeds From Revolving Credit Facility 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] Amount reserved for legal and professional fees Debtor Reorganization Items, Legal and Advisory Professional Fees Reserved Debtor Reorganization Items, Legal and Advisory Professional Fees Reserved Net derivative (loss) gain from commodity contracts Net derivative (loss) gain from commodity contracts Net derivative (loss) gain from commodity contracts Gain (Loss) on Derivative Instruments, Net, Pretax Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] NET (LOSS) INCOME Net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Schedule of disaggregated revenue Disaggregation of Revenue [Table Text Block] Accrued payroll tax Accrued Payroll Taxes, Current Minimum value of well development plan of Lost Hills field Oil And Gas Field, Development Plan, Value Estimated minimum value of development program in a field that is being sold. Liabilities incurred, capitalized to PP&E Asset Retirement Obligation, Liabilities Incurred Quarterly Financial Information Disclosure [Abstract] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] EQUITY Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract] Period Covered By Covenant Agreement [Domain] Period Covered By Covenant Agreement [Domain] Identified period covered by covenant agreement. Oil Oil and Condensate [Member] Deferred Tax Assets, property, plant and equipment differences Deferred Tax Assets, Property, Plant and Equipment Cover [Abstract] Cover [Abstract] Alternative Base Rate Alternative Base Rate [Member] Alternative Base Rate Member Common stock shares canceled (in shares) Stock Repurchased and Retired During Period, Shares Q1 2021 First Quarter Production2021 [Member] First Quarter Production2021 Warrants exercisable Plan Of Reorganization, Exercisable Percentage Plan Of Reorganization, Exercisable Percentage Percentage of voting shares received by existing holders Fresh Start Accounting, Voting Percentage Received Fresh Start Accounting, Voting Percentage Received Successor preferred stock Postconfirmation, Preferred Stock Acquisitions Acquisition cost Purchase of Assets, Net The cash outflows related to purchasing assets other than capital expenditures, including assets acquired as the result of a merger. Junior DIP Facility Junior Debtor-in-Possession Credit Agreement [Member] Junior Debtor-in-Possession Credit Agreement Total long-term debt, net Debt amount Long-term Debt LEASES Lessee, Operating Leases [Text Block] Three California Refineries Three California Refineries [Member] Three California Refineries Service cost—benefits earned during the period Defined Benefit Plan, Service Cost PROPERTY, PLANT AND EQUIPMENT Fresh Start Adjustment Increase (Decrease) Property And Equipment Gross Fresh Start Adjustment Increase (Decrease) Property And Equipment Gross Cash used temporarily Postconfirmation Cash Used Temporarily Postconfirmation Cash Used Temporarily Non-current portion Asset retirement obligations Asset Retirement Obligations, Noncurrent Accounts payable Preconfirmation, Accounts Payable Total operating lease costs Lease Cost, Excluding Finance Lease Costs And Sublease Income Lease Cost, Excluding Finance Lease Costs And Sublease Income Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Cost of sales Cost of Goods and Services Sold CALIFORNIA CALIFORNIA Operating lease costs Lease, Cost [Abstract] Current maturities of long-term debt Debt Instrument Carrying Amount Current Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Equity Components [Axis] Equity Components [Axis] Impact of fresh start accounting Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Redeemable Debtor Reorganization Items Gain (Loss) On Fresh Start Accounting Redeemable Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Shares reserved for issuance of incentive plan Plan Of Reorganization Common Stock Capital Shares Reserved For Issuance Of Incentive Plan Plan Of Reorganization Common Stock Capital Shares Reserved For Issuance Of Incentive Plan Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2021 Incentive Plan 2021 Incentive Plan [Member] 2021 Incentive Plan Member Deferred Tax Assets, subtotal Deferred Tax Assets, Gross Minimum Minimum [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Total property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Plan of Reorganization [Abstract] Grace period Debt Instrument, Grace Period Debt Instrument, Grace Period Schedule of supplemental disclosures to our consolidated statements of cash flows, excluding leases, Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] New long-term incentive plan (in shares) Plan Of Reorganization, Awards Issued During The Period Plan Of Reorganization, Awards Issued During The Period Net loss (income) attributable to noncontrolling interests Less: Net loss (income) attributable to noncontrolling interests Less: Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Components of pension and postretirement amounts recognized in the balance sheets Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Entity Interactive Data Current Entity Interactive Data Current Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Fair values of pension plan assets by asset category Schedule of Allocation of Plan Assets [Table Text Block] REVENUES Revenues [Abstract] CASH FLOW FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] EQUITY Stockholders' Equity Note Disclosure [Text Block] EQUITY Postconfirmation, Stockholders' Equity [Abstract] Summary of stock option activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Deferred Tax Assets and Liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Commodity Contracts Commodity Contract [Member] Commitment fees on unused portion of the revolving credit facility Line of Credit Facility, Commitment Fee Percentage Granted (in shares) Plan of Reorganization by Share-based Payment Award, Options, Grants in Period, Gross Plan of Reorganization by Share-based Payment Award, Options, Grants in Period, Gross Acceleration of unrecognized compensation expense on cancelled stock-based compensation awards Debtor Reorganization Items, Cancellation On Stock-based Compensation Awards Debtor Reorganization Items, Stock-based Compensation Award, Cancellation Percentage of debt hedged by price risk derivatives Percentage Of Debt Hedged By Price Risk Derivatives Percentage Of Debt Hedged By Price Risk Derivatives Total lease liabilities Total Lease Liability Total Lease Liability CURRENT ASSETS Postconfirmation, Current Assets [Abstract] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year One Deferred Tax Liabilities, total net deferred taxes Deferred Tax Liabilities, Gross Royale JV Royale JV [Member] Royale JV Member Long-term debt lease liability Fresh-Start Adjustment, Increase (Decrease), Long-term Debt Lease Liability Fresh-Start Adjustment, Increase (Decrease), Long-term Debt Lease Liability 2022 Production2022 [Member] Production2022 Contributions from noncontrolling interest holders, net Temporary Equity, Stock Issued During Period, Value, New Issues Retirement Plan Type [Domain] Retirement Plan Type [Domain] Net of postretirement benefits cost Pension and Other Postretirement Benefits Cost (Reversal of Cost) Hedge Production Periods [Domain] Hedge Production Periods [Domain] Identified production period subject to hedge instruments. Type of Fresh-Start Adjustment [Domain] Type of Fresh-Start Adjustment [Domain] Net actuarial (loss) gain Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Incremental borrowing rate Debtor-in-Possession Financing, Interest Rate on Borrowings Outstanding Accrued liabilities Accrued Liabilities [Member] Trade receivables Accounts Receivable, after Allowance for Credit Loss, Current Pension and post-retirement adjustments Amounts recognized in accumulated other comprehensive loss Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Finished goods Inventory, Finished Goods, Gross Percentage of common interest held by CRC Noncontrolling Interest, Ownership Percentage by Parent Deferred Tax Assets, other Deferred Tax Assets, Other Proved oil and natural gas properties Proved Oil And Gas Properties [Member] Represents the proved oil and gas properties. Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Any June 30 and December 31 As Of June And December [Member] Covenant period as of any June 30 and December 31. Proceeds from common stock issued Plan Of Reorganization, Proceeds From Issuance Of Common Stock, Gross Plan Of Reorganization, Proceeds From Issuance Of Common Stock, Gross Debt Instrument, Period [Axis] Debt Instrument, Period [Axis] Debt Instrument, Period Materials and supplies Other Inventory, Supplies, Gross After Second Anniversary Debt Instrument, Period Three [Member] Debt Instrument, Period Three Write-off of prepaid directors and officers' insurance premiums Debtor Reorganization Items, Write off of Prepaid Insurance Debtor Reorganization Items, Write off of Prepaid Insurance Cash Cash Exchange of issuance of common stock Plan Of Reorganization, Proceeds From Issuance Of Common Stock, Net Of Issuance Costs Plan Of Reorganization, Proceeds From Issuance Of Common Stock, Net Of Issuance Costs Document Transition Report Document Transition Report Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Repayments of debtor-in-possession facilities Payments For Debtor-In-Possession Financing Payments For Debtor-In-Possession Financing Title of Individual [Axis] Title of Individual [Axis] Lien Notes Lien Notes [Member] Lien Notes Gross Amounts at Fair Value Derivative Asset, Fair Value, Gross Asset NON-OPERATING (LOSS) INCOME Nonoperating Income (Expense) [Abstract] Total property, plant and equipment, net Preconfirmation, Property and Equipment, Net Other current assets Other Assets Current Abstract No definition required Level 2 Fair Value, Inputs, Level 2 [Member] Total consideration of the sale of Lost Hills field 50% interest Disposal Group, Including Discontinued Operation, Consideration Sold Short [Member] Fresh Start Accounting and Allocation of Reorganization Value Fresh Start Accounting And Allocation Of Reorganization Value [Policy Text Block] Fresh Start Accounting And Allocation Of Reorganization Value Accumulated deficit Fresh-Start Adjustment, Increase (Decrease), Retained Earnings (Deficit) Net periodic benefit costs Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] (Increase) decrease in trade receivables Increase (Decrease) in Receivables 2017 Credit Agreement Secured First Lien Second Out Credit Agreement2017 [Member] Represents information pertaining to Secured First Lien Second Out Credit Agreement which is entered into by entity in 2017. Subsequent Event [Line Items] Subsequent Event [Line Items] ACCOUNTING AND DISCLOSURE CHANGES Accounting Standards Update and Change in Accounting Principle [Text Block] Payments for issuance costs net of fee Plan Of Reorganization, Payments For Issuance Costs Plan Of Reorganization, Payments For Issuance Costs Credit Facility [Domain] Credit Facility [Domain] Basic (in dollars per share) Basic EPS (in dollars per share) Earnings Per Share, Basic OTHER LONG-TERM LIABILITIES Fresh-Start Adjustment, Increase (Decrease), Other Noncurrent Obligations Entity File Number Entity File Number Other long-term liabilities Liability, Defined Benefit Plan, Noncurrent Accrued taxes other than on income Accrual for Taxes Other than Income Taxes, Current Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Weighted-average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Amounts recognized in the consolidated balance sheets, total Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] PSU 2018 Awards Performance Stock Unit2018 Awards [Member] Represents performance stock unit awarded in 2018. Total leased assets Leases, Right-Of-Use Asset Leases, Right-Of-Use Asset Contributions from noncontrolling interest holders, net Proceeds from Noncontrolling Interests CHAPTER 11 PROCEEDINGS FRESH START ACCOUNTING Reorganization under Chapter 11 of US Bankruptcy Code Disclosure [Text Block] Through Fourth Anniversary Debt Instrument, Period Four [Member] Debt Instrument, Period Four Balance Sheet Location [Axis] Balance Sheet Location [Axis] Electricity sales Electricity sales Sale Of Electricity [Member] This member represents electricity sales. Total current liabilities Fresh-Start Adjustment, Increase (Decrease), Current Liabilities Number of existing directors remained Plan Of Reorganization, Number Of Directors Remained Before New Appointees Plan Of Reorganization, Number Of Directors Remained Before New Appointees Document Annual Report Document Annual Report Proved oil and natural gas properties Impairment Of Oil And Gas Properties, Proved Properties Impairment Of Oil And Gas Properties, Proved Properties Category of Item Purchased [Axis] Category of Item Purchased [Axis] 2024 Finance Lease, Liability, to be Paid, Year Four Position [Axis] Position [Axis] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Subsequent Event [Table] Subsequent Event [Table] 5% Senior Notes due 2020 Senior Notes500 Percent Due2020 [Member] Represents the senior notes payable that bear an interest rate of 5.00 percent and will mature in 2020. Reconciliation of unrecognized tax benefits Summary of Income Tax Contingencies [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Tier 2 Warrants Tier 2 Warrants [Member] Tier 2 Warrants Member Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest 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 Short-term debt borrowing Short-term Debt Investing cash outflows from operating leases Operating Lease Cash Payments, Investing Operating Lease Cash Payments, Investing CASH FLOW FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Deferred Tax Liabilities, all other Deferred Tax Liabilities, Other Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Shares reserved for future issuance (in shares) Plan Of Reorganization Common Stock Capital Shares Reserved For Future Issuance Plan Of Reorganization Common Stock Capital Shares Reserved For Future Issuance Debt Securities Defined Benefit Plan, Debt Security [Member] Netting Derivative Asset, Fair Value, Gross Liability Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Number of sublease extension options Lessee, Sublease, Renewal Option Lessee, Sublease, Renewal Option TOTAL LIABILITIES AND EQUITY Liabilities and Equity Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax INCOME TAXES Income Tax Disclosure [Text Block] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Deferred Tax Assets, investment in partnerships Deferred Tax Assets, Investment in Partnerships It represents amount of investment in partnerships. Operating lease costs Operating Lease, Cost Less: Unrestricted cash Postconfirmation Less Unrestricted Cash Current Postconfirmation Less Unrestricted Cash Current Weighted-average antidilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted-average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other non-cash charges to income, net Other Noncash Income (Expense) Outstanding common stock Outstanding Common Stock Percentage Outstanding Common Stock Percentage Gross increases – tax positions in current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Gross (decreases) increases – tax positions in prior year Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Equity Component [Domain] Equity Component [Domain] Deferred Tax Assets, postretirement benefit accruals Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Successor Postconfirmation [Abstract] Estimated future undiscounted benefit payments, which reflect expected future service, as appropriate Schedule of Expected Benefit Payments [Table Text Block] Executive Officer Executive Officer [Member] Stockholders' Equity Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Entity Tax Identification Number Entity Tax Identification Number Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] STOCK-BASED COMPENSATION Share-based Payment Arrangement [Text Block] Accrued interest on long-term debt Liabilities Subject To Compromise, Accrued Interest Liabilities Subject To Compromise, Accrued Interest NET (LOSS) INCOME ATTRIBUTABLE TO COMMON STOCK Net Income (Loss) Attributable to Parent Changes in operating assets and liabilities, net: Increase (Decrease) in Operating Capital [Abstract] Cash Preconfirmation, Cash and Cash Equivalents Purchase obligations Contractual Obligation, Fiscal Year Maturity [Abstract] Acquisition of noncontrolling interest in connection with the Plan Payments to Noncontrolling Interests LIBOR London Interbank Offered Rate (LIBOR) [Member] Non-Employee Directors Non-Employee Directors [Member] Non-Employee Directors Member Warrants Postconfirmation, Warrants Postconfirmation, Warrants Current Fiscal Year End Date Current Fiscal Year End Date Present value of lease liabilities Finance Lease, Liability Finance lease costs Finance Lease, Cost Finance Lease, Cost Compensation Related Costs [Abstract] Maximum sub-limit on borrowing capacity for issuance of letters of credit Line Of Credit Facility Maximum Borrowing Capacity Letters Of Credit Sublimit Maximum borrowing capacity of letters of credit as sub-limit of the main credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Total equity Fresh Start Adjustment Increase (Decrease) Stockholders' Equity, Including Portion Attributable To Noncontrolling Interest Fresh Start Adjustment Increase (Decrease) Stockholders' Equity, Including Portion Attributable To Noncontrolling Interest Schedule of reorganization items in consolidated statement of operations Schedule Of Reorganization Items In Consolidated Statement Of Operations And Cash Flows [Table Text Block] Schedule Of Reorganization Items In Consolidated Statement Of Operations And Cash Flows Table Text Block Total recognized in other comprehensive (loss) income Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent ABR Applicable Margin ABR Applicable Margin [Member] ABR Applicable Margin Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Equity attributable to noncontrolling interests Fresh Start Adjustment Increase (Decrease) Stockholders' Equity Attributable To Noncontrolling Fresh Start Adjustment Increase (Decrease) Stockholders' Equity Attributable To Noncontrolling Thereafter Finance Lease, Liability, to be Paid, after Year Five Initial exercise price (in dollars per share) Plan Of Reorganization, Exercise Price Of Warrants Or Rights Plan Of Reorganization, Exercise Price Of Warrants Or Rights Supplemental Cash Flow Information Supplemental Cash Flow Information [Abstract] Junior debtor-in-possession exit fee Debtor Reorganization Items, Exit Fees Debtor Reorganization Items, Exit Fees Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 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] Oil and natural gas, price per barrel Oil and Gas, Average Sale Price Property, Plant and Equipment [Line Items] Property, Plant and Equipment ACQUISITIONS AND DIVESTITURES Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] PROPERTY, PLANT AND EQUIPMENT Preconfirmation Property And Equipment Gross Preconfirmation Property And Equipment Gross Prior to Second Anniversary Debt Instrument, Period Two [Member] Debt Instrument, Period Two Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Percentage of production represented by PSC-type contracts Percentage of Production Through Production Sharing Type Contracts Percentage of represented by production sharing type contracts. Schedule of property, plant and equipment, net Property, Plant and Equipment [Table Text Block] Exclusion of income attributable to noncontrolling interests, net Effective Income Tax Rate Reconciliation Exclusion of Tax Attributable to Noncontrolling Effective income tax rate reconciliation exclusion of tax attributable to noncontrolling. Senior DIP Facility Senior Debtor-In-Possession Facility [Member] Senior Debtor-In-Possession Facility CRC shares issued to Ares-led investor group in a private placement Common stock shares issued (in shares) Stock Issued During Period, Shares, New Issues Interest and debt expense, net Interest And Debt Expense, Net Interest And Debt Expense, Net Remaining commitments to invest an oil and gas property Commitments to Invest for Evaluation and Development, Remaining The remaining amount required to invest in evaluation and development activities. Line of credit facility, expected reduction of commitments Line Of Credit Facility, Expected Reduction Of Commitments Line Of Credit Facility, Expected Reduction Of Commitments Add: Other long-term liabilities Postconfirmation, Other Long-term Debt Equity Net (loss) income attributable to noncontrolling interests Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Finance Finance Lease, Right-of-Use Asset, after Accumulated Amortization Schedule of other operating and finance lease information Lessee, Operating And Finance Leases, Other Information [Table Text Block] Lessee, Operating and Finance Leases, Other Information [Table Text Block] Schedule of maturities of our operating lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Accumulated valuation allowance for unproved properties Capitalized Costs, Accumulated Depreciation, Depletion, Amortization and Valuation Allowance Relating to Oil and Gas Producing Activities Growth funds Growth Funds [Member] Represents information pertaining to growth funds that focus on growth. Statement [Line Items] Equity, Class of Treasury Stock [Line Items] Weighted-average common shares outstanding — basic (in shares) Weighted Average Number of Shares Outstanding, Basic Interest rate added to variable rate basis Debt Instrument, Basis Spread on Variable Rate Ownership [Axis] Ownership [Axis] Net Fair Value Reported Value Measurement [Member] Plan Name [Domain] Plan Name [Domain] Other Asset Retirement Obligation, Other Asset Retirement Obligation, Other Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Issuance of Subscription Rights to creditors in connection with the Plan Adjustments To Additional Paid In Capital, Issuance Of Subscription Rights To Creditors Adjustments To Additional Paid In Capital, Issuance Of Subscription Rights To Creditors ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Actuarial loss (gain) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Estimated fair value of long-term debt Long-term Debt, Fair Value Inventories Inventory, Policy [Policy Text Block] Income tax provision Income Tax Expense (Benefit) Cash—beginning of period Cash—end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Number of trading days Number Of Trading Days Number Of Trading Days Property, Plant and Equipment (PP&E) Property, Plant and Equipment, Policy [Policy Text Block] Principal maturities of debt outstanding Schedule of Maturities of Long-term Debt [Table Text Block] Mezzanine Equity - Redeemable Noncontrolling Interest - Ares Temporary Equity [Line Items] Title of Individual [Domain] Title of Individual [Domain] 2022 Contractual Obligation, to be Paid, Year Two MIRA Macquarie Infrastructure And Real Assets Inc [Member] Represents Macquarie Infrastructure and Real Assets Inc. (MIRA). Finance Finance Lease, Liability, Current Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Local Phone Number Local Phone Number Entity Bankruptcy Proceedings, Reporting Current Entity Bankruptcy Proceedings, Reporting Current Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Facilities and other Facilities And Other [Member] Represents the facilities and other. Cash Cash and Cash Equivalents, at Carrying Value [Abstract] Lease liability Lease Liability Non Current Lease Liability Non Current Oil And Gas Sales And Other Revenue Oil And Gas Sales And Other Revenue [Member] Represents the oil and gas sales and other revenue. Long-term debt (principal amount) Total Outstanding borrowings Long-term Debt, Gross Gross (decreases) increases – tax positions in prior year Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Total property, plant and equipment, net Postconfirmation, Property and Equipment, Net Blend funds Blend Funds [Member] Represents information pertaining to blend funds. Development joint venture period Development Joint Venture Period Development Joint Venture Period Line of credit facility, maximum borrowing capacity Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Net Periodic Benefit Cost Assumptions Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Award Type [Axis] Award Type [Axis] Weighted-Average Grant-Date Fair Value Weighted-Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Accumulated other comprehensive loss Fresh-Start Adjustment, Increase (Decrease), Accumulated Other Comprehensive Income (Loss) Distributions paid to noncontrolling interest holders Distributions to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Decrease in redeemable noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. Period Covered By Covenant Agreement [Axis] Period Covered By Covenant Agreement [Axis] Information about the period subject to covenant agreement. Debt Instrument, Period [Domain] Debt Instrument, Period [Domain] Debt Instrument, Period Domain Accumulated (Deficit) Earnings Retained Earnings [Member] Hedge Production Periods [Axis] Hedge Production Periods [Axis] Information about the production period subject to hedge instruments. Preferred stock, outstanding shares (in shares) Preferred Stock, Shares Outstanding Measurement Basis [Axis] Measurement Basis [Axis] Pre-tax unamortized deferred gain on early extinguishment of debt Gains (Losses) on Recourse Debt Revisions in estimated cash flows Asset Retirement Obligation, Revision of Estimate Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Fair value adjustment to asset retirement obligations, noncurrent Fresh Start Adjustments Fair Value Adjustment To Asset Retirement Obligations Noncurrent Fresh Start Adjustments Fair Value Adjustment To Asset Retirement Obligations Noncurrent Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Schedule of net benefit costs Schedule of Net Benefit Costs [Table Text Block] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Funding status of plans Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Summary of the activity of capitalized exploratory well costs Capitalized Exploratory Well Costs, Roll Forward [Table Text Block] Award Type [Domain] Award Type [Domain] Net (payments) proceeds on settled commodity derivatives Proceeds (Payments) on Derivative Settlements to Reconcile Net Income Loss to Cash provided by Used in Operating Activities The net proceeds (payments) on derivative settlements, which increase (reduce) net income and are thus added (deducted) when calculating cash provided by or used in operating activities. Accrued liabilities Liability, Defined Benefit Plan, Current Debt Long-term Debt, Unclassified [Abstract] Total equity attributable to common stock Preconfirmation, Stockholders' Equity TOTAL ASSETS Preconfirmation, Assets Enterprise value of successor company approved by bankruptcy court Debtor-In-Possession, Enterprise Value Of Successor Company Approved By Bankruptcy Court Debtor-In-Possession, Enterprise Value Of Successor Company Approved By Bankruptcy Court Financial covenant, increase in commitment threshold Debt Instrument, Covenant Terms, Increase In Commitment Threshold Debt Instrument, Covenant Terms, Increase In Commitment Threshold PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Line of credit facility, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Pension Benefits Pension Plan [Member] EARNINGS PER SHARE Earnings Per Share [Text Block] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Redeemable noncontrolling interests Beginning balance Ending balance Redeemable Noncontrolling Interest, Equity, Carrying Amount CURRENT LIABILITIES Liabilities, Current [Abstract] U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Accretion expense Asset Retirement Obligation, Accretion Expense ASSET IMPAIRMENT Asset Impairment Charges [Text Block] Accumulated other comprehensive loss Preconfirmation, Accumulated Other Comprehensive Income (Loss) Proceeds from lines of credit Proceeds from Lines of Credit Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basic EPS calculation Earnings Per Share, Basic [Abstract] Redeemable noncontrolling interest, equity, preferred, redemption value Redeemable Noncontrolling Interest, Equity, Preferred, Redemption Value