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properties, net of valuation allowance of $12 and $12, respectively Oil and Gas, Successful Efforts Method, Property and Equipment, Unproved Property, before Accumulated Depreciation, Depletion, Amortization, and Impairment Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Other Payment for (Proceeds from) Other Investing Activity Issuance of common stock in connection with Civitas Merger (in shares) Stock Issued During Period, Shares, Acquisitions Wells in progress Wells in Progress Oil and gas properties under development using the successful efforts method that are not being amortized Aggregate fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value Shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Segment Reporting [Table] Segment Reporting [Table] Business Combination, Acquiree's Revenue since Acquisition Date, Actual Business Combination, Acquiree's Revenue since Acquisition Date, Actual Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Restructuring and Related Cost, Expected Cost Remaining Restructuring and Related Cost, Expected Cost Remaining Schedule of Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Income from operations Operating Income (Loss) Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative Financial Instruments Derivative [Line Items] Midland Basin Permian Basin [Member] Permian (formerly Midland) Basin [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Net dividends declared per common share Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Gas Collar Contract, Year 3 Gas Collar Contract, Year 3 [Member] Gas Collar Contract, Year 3 Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Stock-based compensation expense (Amount) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Senior Notes, Principal Amount, Net Senior Notes Gas Contracts Gas Contracts [Member] Gas Contracts [Member] Common Stock, Shares Issued Common Stock, Shares, Issued Measure: Measure [Axis] Asset retirement obligations Asset Retirement Obligations, Noncurrent Oil, gas, and NGL production expense Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Gas Swaps Contract, Year 3 Gas Swaps Contract, Year 3 [Member] Gas Swaps Contract, Year 3 [Member] Equity Components [Axis] Equity Components [Axis] Debt Instrument, Repurchase Amount Debt Instrument, Repurchase Amount Product and Service [Domain] Product and Service [Domain] Gain on divestiture activity Gain on divestiture activity Gain (Loss) on Disposition of Oil and Gas Property Operating activities: Net cash paid for income taxes Income Tax Paid, after Refund Received Entity Interactive Data Current Entity Interactive Data Current Deferred tax liabilities, net Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current us-gaap_DebtInstrumentFaceAmountToBeRedeemedInFuturePeriod us-gaap_DebtInstrumentFaceAmountToBeRedeemedInFuturePeriod us-gaap_DebtInstrumentFaceAmountToBeRedeemedInFuturePeriod Supplemental Cash Flow Information - Investing activities: Supplemental Cash Flow Information - Investing Activities [Abstract] Supplemental Cash Flow Information - Investing Activities [Abstract] Entity Small Business Entity Small Business Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Gas Swaps Contract Third Quarter, Year 1 Gas Swaps Contract Third Quarter, Year 1 [Member] Gas Swaps Contract Third Quarter, Year 1 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] NGL Swaps Contract Third Quarter, Year 1 NGL Swaps Contract Third Quarter, Year 1 [Member] NGL Swaps Contract Third Quarter, Year 1 [Member] Proved oil and gas properties Business Combination, Recognized Asset Acquired, Oil and Gas, Successful Efforts Method, Property and Equipment, Proved Property Business Combination, Recognized Asset Acquired, Oil and Gas, Successful Efforts Method, Property and Equipment, Proved Property Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Other current liabilities Other Liabilities, Current Other noncurrent assets Other Assets, Noncurrent NYMEX HH NYMEX HH [Member] NYMEX HH Document Type Document Type Senior Notes, repurchased principal amount Debt Instrument, Repurchased Face Amount Acquisition of business, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Financial assets and liabilities measured at fair value on a recurring and nonrecurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Derivative assets Derivative assets, current Derivative Asset, Current Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Fair Value as of Grant Date Award Grant Date Fair Value Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage OPIS Ethane Mont Belvieu Non-TET OPIS Ethane Mont Belvieu Non-TET [Member] OPIS Ethane Mont Belvieu Non-TET Derivative Instruments Not Designated as Hedging Instruments [Abstract] Derivative Instruments Not Designated as Hedging Instruments [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Stock Repurchase Program, Remaining Authorized Repurchase Amount Share Repurchase Program, Remaining Authorized, Amount Disposal Group [Table] Disposal Group [Table] Disposal Group Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Income before income taxes Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (note 7) Commitments and Contingencies Total operating revenues and other income Total operating revenues and other income Revenues Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Deferred tax liabilities (assets), net Business Combination, Recognized Asset Acquired, Deferred Tax Asset Executive Category: Executive Category [Axis] WTI Midland NYMEX WTI WTI Midland NYMEX WTI [Member] WTI Midland NYMEX WTI [Member] 6.75% Senior Unsecured Notes due 2026 6.75% Senior Unsecured Notes Due 2026 [Member] 6.75% Senior Unsecured Notes Due 2026 [Member] Receivable Type [Axis] Receivable Type [Axis] Unproved oil and gas properties, valuation allowance Unproved oil and gas properties, valuation allowance Unproved oil and gas properties, valuation allowance LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Other Commitments [Table] Other Commitments [Table] Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Disclosures Fair Value Disclosures [Text Block] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Supplemental schedule of additional cash flow information: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Unproved oil and gas properties Business Combination, Recognized Asset Acquired, Oil and Gas, Successful Efforts Method, Property and Equipment, Unproved Property Business Combination, Recognized Asset Acquired, Oil and Gas, Successful Efforts Method, Property and Equipment, Unproved Property Geographical [Axis] Geographical [Axis] Gas Swaps Contract Fourth Quarter, Year 1 Gas Swaps Contract Fourth Quarter, Year 1 [Member] Gas Swaps Contract Fourth Quarter, Year 1 [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number 8.375% Senior Unsecured Notes Due 2028 8.375% Senior Unsecured Notes Due 2028 [Member] 8.375% Senior Unsecured Notes Due 2028 Business Combination, Recognized Asset Acquired, Asset [Abstract] Business Combination, Recognized Asset Acquired, Asset [Abstract] Other Commitments [Line Items] Other Commitments [Line Items] Restructuring costs paid Payments for Restructuring NYMEX Oil Calendar Month Average Roll Differential Contract, Year 2 NYMEX Oil Calendar Month Average Roll Differential Contract, Year 2 [Member] NYMEX Oil Calendar Month Average Roll Differential Contract, Year 2 Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Gas Basis Swap Contract, Year 2 Gas Basis Swap Contract, Year 2 [Member] Gas Basis Swap Contract, Year 2 Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Cash consideration transferred Payments to Acquire Businesses, Gross Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Net proceeds from the sale of oil and gas properties Proceeds from Sale of Oil and Gas Property and Equipment Accumulated depletion, depreciation, and amortization Oil and Gas, Successful Efforts Method, Property and Equipment, Accumulated Depreciation, Depletion, and Amortization Disposal Group Name [Axis] Disposal Group Name [Axis] NYMEX Oil Swap Contract, Year 3 NYMEX Oil Swap Contract, Year 3 [Member] NYMEX Oil Swap Contract, Year 3 [Member] Schedule of fair value of derivatives in accompanying balance sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic net income per common share Basic net income per common share Earnings Per Share, Basic Repurchase of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Components of the provision for income taxes Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Other property and equipment, net of accumulated depreciation of $67 and $63, respectively Property, Plant, and Equipment, Other, after Accumulated Depreciation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Liquidated damages, potential Drilling and Completion Commitment, Liquidated Damages, Potential Drilling and Completion Commitment, Liquidated Damages, Potential Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Energy required to deliver Supply Commitment, Energy Required To Deliver Supply Commitment, Energy Required To Deliver Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Production taxes Production taxes [Member] Production taxes Gas Basis Swap Contract Fourth Quarter, Year 1 Gas Basis Swap Contract Fourth Quarter, Year 1 [Member] Gas Basis Swap Contract Fourth Quarter, Year 1 Derivative Name [Domain] Derivative Contract [Domain] Relative percentage Concentration Risk, Percentage Concentration Benchmark [Axis] Concentration Risk Benchmark [Axis] 8.750% Senior Unsecured Notes Due 2031 8.750% Senior Unsecured Notes Due 2031 [Member] 8.750% Senior Unsecured Notes Due 2031 Equity Awards Adjustments Equity Awards Adjustments [Member] Business Combination [Line Items] Asset Acquisition [Line Items] Total liabilities and stockholders’ equity Liabilities and Equity Derivative liabilities Derivatives liabilities, noncurrent Derivative Liability, Noncurrent Disposal Group [Line Items] Disposal Group [Line Items] Disposal Group Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring costs incurred Restructuring Charges Plan Name Plan Name [Axis] Common Stock, Dividends, Annual Rate Per Share Common Stock, Dividends, Annual Rate Per Share Common Stock, Dividends, Annual Rate Per Share Tabular List, Table Tabular List [Table Text Block] Gas Collar Contract, Year 2 Gas Collar Contract, Year 2 [Member] Gas Collar Contract, Year 2 Other non-operating income, net Other non-operating expense Other Nonoperating Income (Expense) Long-Term Debt Long-Term Debt [Text Block] Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Other operating expense Other operating expense Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name Stockholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Noncurrent assets: Assets, Noncurrent [Abstract] General and administrative General and Administrative Expense Property and equipment (successful efforts method): Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization [Abstract] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Debt Instrument, Fair Value Disclosure [Abstract] Debt Instrument, Fair Value Disclosure [Abstract] Fair value of derivative assets and liabilities Derivatives, Fair Value [Line Items] 5.000% Senior Unsecured Notes Due 2026 5.000% Senior Unsecured Notes Due 2026 [Member] 5.000% Senior Unsecured Notes Due 2026 IF WAHA NYMEX HH IF WAHA NYMEX HH [Member] IF WAHA NYMEX HH Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating activities: Cash paid for interest, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Gas Basis Swap Contract, Year 3 Gas Basis Swap Contract, Year 3 [Member] Gas Basis Swap Contract, Year 3 Net derivative settlement (gain) loss Derivative settlement (gain) or loss Realized (gain) or loss recognized in earnings from the settlement of derivative instruments not designated as hedges. Credit Facility [Axis] Credit Facility [Axis] Restructuring Costs Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Exploration Exploration Expense Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other, net Other Noncash Income (Expense) Common Stock, Dividends, Quarterly Rate Per Share Common Stock, Dividends, Quarterly Rate Per Share Common Stock, Dividends, Quarterly Rate Per Share Senior Notes [Line Items] Long-Term Debt [Line Items] Debt Instrument [Line Items] Accounts Receivable from Customers [Abstract] Accounts Receivable from Customers [Abstract] Accounts Receivable from Customers [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] NGL Swaps Contract, Year 2 NGL Swaps Contract, Year 2 [Member] NGL Swaps Contract, Year 2 Total consideration transferred Business Combination, Consideration Transferred Issuance of common stock upon vesting of RSUs and settlement of PSUs, net of shares used for tax withholdings (Shares) Stock Issued During Period, Shares, Restricted Stock Units Number of shares issued during the period as a result of vesting of RSUs, net of shares used for tax withholdings. Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category 9.625% Senior Unsecured Notes Due 2033 9.625% Senior Unsecured Notes Due 2033 [Member] 9.625% Senior Unsecured Notes Due 2033 Name Trading Arrangement, Individual Name Derivative, Oil Basis Swap Type, Weighted-Average Contract Price Derivative, Oil Basis Swap Type, Weighted-Average Contract Price Derivative, Oil Basis Swap Type, Weighted-Average Contract Price Cash and cash equivalents Cash and Cash Equivalent WTI Houston MEH NYMEX WTI WTI Houston MEH NYMEX WTI [Member] WTI Houston MEH NYMEX WTI Net derivative (gain) loss Net derivative (gain) loss Gain (Loss) on Derivative Instruments, Net, Pretax Concentration Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Entity Address, Address Line Two Entity Address, Address Line Two Stock-based compensation expense (Shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Schedule of Accounts Receivable [Table] Accounts and Financing Receivables [Table] Closing price per share (in dollars per share) Business Combination, Price Per Share Current assets: Assets, Current [Abstract] Pro forma oil, gas, and NGL production revenue Business Combination, Pro Forma Information, Pro Forma Revenue Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income tax expense Income tax expense Income Tax Expense (Benefit) Award Timing Method Award Timing Method [Text Block] Net change in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast [Member] Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Payments to Acquire Businesses, Gross, Employee Retention Program Payments to Acquire Businesses, Gross, Employee Retention Program Payments to Acquire Businesses, Gross, Employee Retention Program NGL Swaps Contract, Year 3 NGL Swaps Contract, Year 3 [Member] NGL Swaps Contract, Year 3 South Texas Divestiture South Texas Divestiture [Member] South Texas Divestiture E&P Segment net income (2) Net income Net income Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Revolving Credit Facility, unamortized deferred financing costs Senior Notes, unamortized deferred financing costs Unamortized Debt Issuance Expense Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Debt Instrument, Unamortized Premium Debt Instrument, Unamortized Premium Liabilities assumed Business Combination, Recognized Liability Assumed, Liability [Abstract] Civitas Resources Merger Civitas Resources Merger [Member] Civitas Resources Merger Total derivative assets Derivative Assets, Fair Value, Gross Asset Derivative Asset, Subject to Master Netting Arrangement, before Offset Net derivative settlement gain (loss) Cash Portion Of Gain (Loss) On Derivative Instrument The cash portion of the gain (loss) recorded on derivative instruments. Business Combination, Effective Date of Acquisition Business Combination, Effective Date of Acquisition NYMEX Oil Collar Contract, Third Quarter Year 1 NYMEX Oil Collar Contract, Third Quarter, Year 1 [Member] NYMEX Oil Collar Contract, Third Quarter, Year 1 Federal Current Federal Tax Expense (Benefit) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] President [Member] Chief Executive Officer [Member]