Number of agreements Number Of Agreements Number Of Agreements Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Leasehold improvements Leasehold Improvements [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Reconciliation of income tax expense and the reported effective tax rate Effective Income Tax Rate Reconciliation, Amount [Abstract] Participating interest percentage after acquired interest Business Acquisition, Participating Interest Percentage After Acquired Interest Business Acquisition, Participating Interest Percentage After Acquired Interest Two-way collars Two-way Collars [Member] Two-way Collars Redemption price percentage following sell of certain assets Debt Instrument Redemption Price Percentage Due To Sale Of Certain Assets Percentage of price of original principal amount of debt at which debt may be required to be redeemed in the event of certain asset sales. Transaction related costs Business Combination, Acquisition Related Costs Loss on asset retirement obligations liability settlements Loss On Asset Retirement Obligation Liabilities Settled Amount of loss on asset retirement obligations settled, or otherwise disposed of, during the period. Derivative liability, fair value Derivative Liability Acquisition of oil and gas properties Payments to Acquire Oil and Gas Property Security Exchange Name Security Exchange Name 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 Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Additional Financial Information Additional Financial Information N/A Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Asset Retirement Obligations Asset Retirement Obligation and Environmental Cost [Policy Text Block] Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Borrowings under long-term debt Proceeds from Issuance of Other Long-term Debt Number of shares remaining available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Capitalized Interest Capitalized Interest Cost [Member] Represents information pertaining to capitalized interest costs. Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 2023 Long-Term Debt, Maturity, Year Two Foreign net operating loss carryforwards expiring in 2023 Operating Loss Carry Forwards Foreign Expiring Year Two Operating Loss Carry Forwards Foreign Expiring Year Two Cash settlements on derivatives, net (including $(224.4) million and $(2.7) million and $(36.3) million on commodity hedges during 2021, 2020, and 2019) Cash settlements on derivatives Cash Settlements On Derivatives Represents the amount of cash settlements on derivatives. Charged to Costs and Expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Foreign net operating loss carryforwards expiring in 2024 Operating Loss Carry Forwards Foreign Expiring Year Three Amount of foreign operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that is expiring in third fiscal year following the latest fiscal year. Outstanding restricted stock awards and units excluded from the computations of diluted net income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Sale of Stock [Axis] Sale of Stock [Axis] Total deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance Business Combination and Asset Acquisition [Abstract] Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Business Acquisition [Axis] Business Acquisition [Axis] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Award Type [Domain] Award Type [Domain] Expected construction period for capitalization of interest costs on major projects Major Projects Construction Period for Capitalization of Interest The expected period of time estimated for a major construction project to qualify for capitalization of interest. Local Phone Number Local Phone Number National Oil Companies Of Mauritania And Senegal National Oil Companies Of Mauritania And Senegal [Member] National Oil Companies Of Mauritania And Senegal [Member] Nonrecurring Fair Value, Nonrecurring [Member] Condensed Income Statement [Table] Condensed Income Statement [Table] Exploratory well costs capitalized for a period of one to three years Capitalized Exploratory Well Costs Greater Than Or Equal To One Year And Less Than Four Years Capitalized Exploratory Well Costs Greater Than Or Equal To One Year And Less Than Four Years Preference shares, $0.01 par value; 200,000,000 authorized shares; zero issued at December 31, 2021 and December 31, 2020 Preferred Stock, Value, Issued Total derivatives not designated as hedging instruments Derivative Assets (Liabilities), at Fair Value, Net Oil and Gas Agreement [Axis] Oil and Gas Agreement [Axis] Represents the activity related to oil and gas agreements. Accumulated Deficit Retained Earnings [Member] Joint interest billings, net Oil and Gas Joint Interest Billing Receivables, Current Income tax refund claim from Cares act Coronavirus Aid, Relief, And Economic Security Act, Income Tax Refund Claim, Amount Coronavirus Aid, Relief, And Economic Security Act, Income Tax Refund Claim, Amount Debt Instrument, Redemption, Period Four Debt Instrument, Redemption, Period Four [Member] All Countries [Domain] All Countries [Domain] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Oil And Gas Units [Axis] Oil And Gas Units [Axis] Oil And Gas Units Basic (in dollars per share) Earnings Per Share, Basic Impact of (gains) losses incurred in jurisdictions in which the company is not subject to taxes on effective tax rate Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Outstanding at the beginning of the period (in shares) Outstanding at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2022 Long-Term Debt, Maturity, Year One United States deferred interest expense Deferred Tax Asset, Interest Carryforward Fair Value Measurement [Domain] Fair Value Measurement [Domain] Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Reconciliation of capitalized exploratory well costs on completed wells Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward] Derivatives—related party Derivative Asset, Related Party, Current Derivative Asset, Related Party, Current Service Vesting Restricted Stock Units Service Vesting Restricted Stock Units [Member] Represents information pertaining to the restricted stock units with service vesting criteria. Net deferred tax liability Deferred Tax Liabilities, Net Other Other Noncash Income (Expense) Depletion, depreciation and amortization related to property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Participation interest acquired Acquired Participation Interest Percentage Represents the percentage of participation interest acquired during the period. Oil and Gas Operating Agreements [Axis] Oil and Gas Operating Agreements [Axis] Represents the activity related to oil and gas operating agreements. Oil And Gas Units [Domain] Oil And Gas Units [Domain] Oil And Gas Units [Domain] Debt Instrument, Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Entity Voluntary Filers Entity Voluntary Filers Net proceeds from issuance of senior notes Proceeds from Issuance of Secured Debt Plan Name [Axis] Plan Name [Axis] Assets: Assets, Fair Value Disclosure [Abstract] Total debt, net Long-term Debt Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Interest and other financing costs, net—related party Interest Expense (Income), Net, Related Party Interest Expense (Income), Net, Related Party Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Entity Small Business Entity Small Business Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, Payment, Due [Abstract] Field life cover ratio Debt Instrument, Covenant, Field Life Cover Ratio Debt Instrument, Covenant, Field Life Cover Ratio Dated Brent Dated Brent [Member] Dated Brent [Member] Additional incremental commitments Debt Instrument, Accordion Feature, Increase Commitments Debt Instrument, Accordion Feature, Increase Commitments Expected quarterly dividends (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Expected Dividend Net tax shortfall (windfall) Tax shortfall (windfall) on equity-based compensation, net Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount Scenario [Axis] Scenario [Axis] Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Shell Shell [Member] Shell Equatorial Guinea EQUATORIAL GUINEA Increase (decrease) in accounts payable Increase (Decrease) in Accounts Payable LTIP Long Term Incentive Plan [Member] Represents the details pertaining to Long-Term Incentive Plan, which provides for the granting of incentive awards. SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Derivatives Derivatives liabilities—current Derivative Liability, Current Entity Interactive Data Current Entity Interactive Data Current Thereafter Long-Term Debt, Maturity, after Year Five Capitalized Contract Cost [Table] Capitalized Contract Cost [Table] Additional Financial Information Additional Financial Information Disclosure [Text Block] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Greater Tortue Ahmeyim Greater Tortue Ahmeyim [Member] Greater Tortue Ahmeyim Total deferred tax assets Deferred Tax Assets, Gross Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Derivatives Derivatives assets—current Derivative Asset, Current Entity Address, State or Province Entity Address, State or Province Beginning balance  Ending balance  Ending balance Capitalized Exploratory Well Costs Liabilities incurred during period Asset Retirement Obligation, Liabilities Incurred Accounts payable and accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Payable and Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Payable and Accrued Liabilities Deferred tax assets Long-term deferred tax asset Deferred Income Tax Assets, Net Reduction in margin Debt Instrument, Basis Spread On Variable Rate, Increase (Decrease) Increase (decrease) in percentage points added to the reference rate to compute the variable rate on the debt instrument. Current liabilities: Liabilities, Current [Abstract] General and administrative General and Administrative Expense Ghana GHANA Restricted stock awards and units Stock Issued During Period, Value, Restricted Stock Award, Gross Capitalized Contract Cost [Line Items] Capitalized Contract Cost [Line Items] Accounting Policies [Abstract] Accounting Policies [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Total lease liabilities Operating Lease, Liability Document Transition Report Document Transition Report Common stock, $0.01 par value; 2,000,000,000 authorized shares; 496,152,331 and 449,718,317 issued at December 31, 2021 and December 31, 2020, respectively Common Stock, Value, Issued Weighted average period over which compensation expense is to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Outstanding at beginning of the period (in dollars per share) Outstanding at the end of the period (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 Leases Lessee, Operating Leases [Text Block] Exploratory well costs capitalized for a period of one year or less Capitalized Exploratory Well Costs that Have Been Capitalized for Period of One Year or Less Revisions in estimated retirement obligations Asset Retirement Obligation, Revision of Estimate ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Asset retirement obligations Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Asset Retirement Obligations Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Asset Retirement Obligations Schedule of Share-based Payment Arrangement, Activity Share-based Payment Arrangement, Activity [Table Text Block] Schedule of redemption price Debt Instrument Redemption [Table Text Block] Loan life cover ratio Debt Instrument, Covenant, Loan Life Cover Ratio Debt Instrument, Covenant, Loan Life Cover Ratio Legal Entity [Axis] Legal Entity [Axis] Restricted stock awards and units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Interest expense Interest Costs Incurred Proceeds from issuance Sale of Stock, Consideration Received on Transaction Total oil and gas properties Oil and Gas Property, Successful Effort Method, Gross Capitalized Interest Interest Capitalization, Policy [Policy Text Block] Prepaid expenses and other Prepaid Expense and Other Assets, Current 7.875% Senior Notes Due 2021 Senior Notes 7.875% Due 2021 [Member] Represents senior notes issued at 7.875% interest rate and due in 2021. Entity [Domain] Entity [Domain] Dividends declared per common share (in dollars per share) Dividends declared per common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Accrued liabilities Accrued liabilities Accrued Liabilities, Current Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Equity compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Maximum percentage of principal amount available to be redeemed with proceeds from equity offerings Debt Instrument Maximum Principal Amount Available To Be Redeemed With Proceeds From Equity Offerings Represents the maximum percentage of the principal amount available to be redeemed with proceeds of certain equity offerings. Fair value of assets acquired: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Payment interest on development activities Development Activities, Payment Interest Percentage Development Activities, Payment Interest Percentage All Countries [Axis] All Countries [Axis] Geopolitical areas recognized by governments of the world as grouping of countries. Number of projects that have exploratory well costs that have been capitalized for a period greater than one year Projects that have Exploratory Well Costs that have been Capitalized for Period Greater than One Year, Number of Projects Exploration expense, excluding unsuccessful well costs and leasehold impairments Costs Incurred, Exploration Costs Consolidation Items [Domain] Consolidation Items [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Foreign net operating loss carryforwards not expiring Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration Interval period for payment of interest Interest Payment Interval Period Represents interval period after the first day of the interest period at which the interest is to be paid , if the interest period is longer than six months. Measurement Input Type [Domain] Measurement Input Type [Domain] Materials and supplies inventory Inventory, Supplies, Net of Reserves Farm-in Agreement Farm In Agreement [Member] Represents details pertaining to the farm-in agreement, where by Kosmos acquired a participating interest in a block. Variable Rate [Axis] Variable Rate [Axis] Business Segment Information Segment Reporting Disclosure [Text Block] Suspended Well Costs Suspended Well Costs Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of changes in asset retirement obligations Schedule of Change in Asset Retirement Obligation [Table Text Block] Net deferred premium payable/(receivable) (usd per bbl) Derivative Weighted Average Deferred Premium Per Barrel Derivative Weighted Average Deferred Premium Per Barrel Derivative Contract Term [Domain] Derivative Contract Term [Domain] This element represents individual derivative contract terms. Increase (Decrease) in Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Schedule of aging of capitalized exploratory well costs and number of projects for which exploratory well costs were capitalized for more than one year Schedule of Aging of Capitalized Exploratory Well Costs [Table Text Block] Depletion, Depreciation and Amortization Property, Plant and Equipment [Abstract] Oil and gas production Operating Costs and Expenses Variable Rate [Domain] Variable Rate [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] Equity in (earnings) losses of subsidiaries Equity in (earnings) losses of subsidiaries Income (Loss) from Equity Method Investments in Consolidated Subsidiaries Represents the entity's proportionate share for the period of the net income (loss) of its consolidated subsidiaries to which the equity method of accounting is applied. Repayments of debt Repayments of Debt Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Revenue of acquiree since acquisition date Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Unrealized derivative losses Deferred Tax Assets, Derivative Instruments Unamortized deferred financing costs and discounts Debt Instrument Unamortized Issuance Costs And Discounts The remaining amount of debt issuance costs and discounts that were originally capitalized and have yet to be amortized. Borrowings under long-term debt Proceeds from Lines of Credit Debt cover ratio Debt Instrument, Covenant, Debt Cover Ratio Debt Instrument, Covenant, Debt Cover Ratio Schedule of capitalized exploratory well costs Capitalized Exploratory Well Costs, Roll Forward [Table Text Block] Non-deductible compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount Other expenses, net Other expenses, net Other Nonoperating Income (Expense) Tax benefit from cares act Effective Income Tax Rate Reconciliation, Coronavirus Aid, Relief, And Economic Security Act, Amount Effective Income Tax Rate Reconciliation, Coronavirus Aid, Relief, And Economic Security Act, Amount Maximum Maximum [Member] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Schedule of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] (Increase) decrease in receivables Decrease in receivables Increase (Decrease) in Receivables Award Type [Axis] Award Type [Axis] BP Operator BP Operator [Member] BP Operator Schedule of future minimum rental commitments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Total stockholders’ equity Balance Balance Stockholders' Equity Attributable to Parent City Area Code City Area Code Increase (decrease) in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Restricted cash Restricted cash - current Restricted Cash and Cash Equivalents, Current Redemption price percentage following change of control Debt Instrument Redemption Price Percentage Due To Change Of Control Percentage of price of original principal amount of debt at which debt may be required to be redeemed in the event of a change of control. Redemption of senior secured notes Redemption of senior secured notes Repayments of Senior Debt 7.125% Senior Notes Senior Notes 7.125% Due 2026 [Member] Senior Notes 7.125% Due 2026 [Member] Estimated useful lives Property, Plant and Equipment, Useful Life Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Other long-term liabilities (non-current maturities of leases) Operating Lease, Liability, Noncurrent Long-lived assets, measurement input Long-Lived Assets, Measurement Input Long-Lived Assets, Measurement Input GNPC's paying interest Paying Interest, Percentage Represents percentage of paying interest during the period. Current Current Income Tax Expense (Benefit) Debt, face amount Debt Instrument, Face Amount Initial purchase price Initial Purchase Price From Sale Of Oil And Gas Property And Equipment Initial Purchase Price From Sale Of Oil And Gas Property And Equipment Shell Sao Tome and Principe B.V. Shell Sao Tome and Principe B.V. [Member] Shell Sao Tome and Principe B.V. [Member] Foreign Other Foreign Countries [Member] Represents the foreign countries other than United States. Total tax benefit Share-based Payment Arrangement, Expense, Tax Benefit Total revenues and other income Revenue And Other Income Revenue And Other Income Operating Segments Operating Segments [Member] Derivatives receivable - related party Derivatives Receivable Related Party Derivatives Receivable Related Party Operating lease, initial term Lessee, Operating Lease, Term of Contract Derivative instruments, Balance Sheet Location Derivatives, Fair Value [Line Items] Restricted stock units Restricted Stock Units (RSUs) [Member] Commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Charged To Other Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account Total deferred tax liabilities Deferred Tax Liabilities, Gross Business Acquisition [Line Items] Business Acquisition [Line Items] Asset retirement obligation and other Deferred Tax Assets, Asset Retirement Obligation And Other Deferred Tax Assets, Asset Retirement Obligation And Other Investment in subsidiaries at equity Equity Method Investments Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Registrant Name Entity Registrant Name Deductions From Reserves SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Long-term debt Notes Payable, Fair Value Disclosure Net non-taxable expense / insurance recoveries Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Income tax expense (benefit) Income tax expense (benefit) Income tax expense (benefit) Income Tax Expense (Benefit) Oil sales Accounts Receivable, after Allowance for Credit Loss, Current Entity Tax Identification Number Entity Tax Identification Number Document Fiscal Period Focus Document Fiscal Period Focus Total current assets Assets, Current Total undiscounted lease payments Lessee, Operating Lease, Liability, to be Paid Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Equity-based Compensation Share-based Payment Arrangement [Policy Text Block] Interest income Other Nonoperating Income Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Equatorial Guinea Equatorial Guinea Segment [Member] Equatorial Guinea Segment [Member] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Current maturities of long-term debt Less: Current maturities of long-term debt Long-term Debt, Current Maturities Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Derivative instruments, Location of Gain/(Loss) Derivative Instruments, Gain (Loss) [Line Items] Schedule of cash and cash equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Equity Component [Domain] Equity Component [Domain] Short-Term Drilling Contracts Short-Term Drilling Contracts [Member] Short-Term Drilling Contracts 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Deferred financing costs, accumulated amortization Accumulated Amortization, Debt Issuance Costs, Noncurrent Balance sheet classifications Assets and Liabilities, Lessee [Abstract] Sold calls Sold Calls [Member] Represents the option contract providing the right, but not the obligation, to buy a specified amount of an underlying security at a specified price within a specified time. Deferred financing costs, net of accumulated amortization of $19,912 and $17,296 at December 31, 2021 and December 31, 2020, respectively Net deferred financing costs Debt Issuance Costs, Noncurrent, Net Period for contractual future payments, applicable interest margin Debt Instrument, Period For Contractual Future Payments, Basis Spread On Variable Rate Debt Instrument, Period For Contractual Future Payments, Basis Spread On Variable Rate Mauritania MAURITANIA Schedule of carrying values and fair values of financial instruments that are not carried at fair value Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Income (loss) before income taxes Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Changes in capital accruals Increase (Decrease) In Capital Accruals Increase (Decrease) In Capital Accruals Contract liability, noncurrent Contract with Customer, Liability, Noncurrent Production Prepayment Agreement converted to GoM Term Loan Production Prepayment Agreement Exchanged For Term Loan Production Prepayment Agreement Exchanged For Term Loan Auditor Location Auditor Location Segment Reporting [Abstract] Segment Reporting [Abstract] Unit interest after redetermination process Unit Interest Percentage after Redetermination Represents the percentage of unit interest, retroactively applied, held by the entity after redetermination process under the terms of a operating agreement. Commodity derivatives Commodity Contract [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of reconciliation between net income (loss) and the amounts used to compute basic and diluted net income (loss) per share and the weighted average shares outstanding used to compute basic and diluted net income (loss) per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Ultimate interest upon full exercise of pre-emption rights Ultimate Interest Upon Full Exercise Of Pre-emption Rights Ultimate Interest Upon Full Exercise Of Pre-emption Rights Title of 12(b) Security Title of 12(b) Security Common shares, authorized shares (in shares) Common Stock, Shares Authorized Initial purchase price Business Combination, Initial Purchase Price Business Combination, Initial Purchase Price Document Type Document Type Product and Service [Domain] Product and Service [Domain] Proved properties Proved Oil and Gas Property, Successful Effort Method Interest rate Debt Instrument, Interest Rate, Stated Percentage Oil and Gas Joint Interest Billing Receivables [Table] Oil and Gas Joint Interest Billing Receivables [Table] Schedule of net carrying value as of the Balance Sheet date of accounts receivable attributable to joint interest partners in oil and gas properties. Also includes details pertaining to the information regarding the unit holders. Equity-based Compensation Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Revolving Credit Facility Revolving Credit Facility Revolving Credit Facility [Member] Participating interest percentage Business Acquisition, Percentage Of Participating Interest Acquired Business Acquisition, Percentage Of Participating Interest Acquired Investing cash flows for operating leases Operating Lease, Payments, Use Measurement Frequency [Axis] Measurement Frequency [Axis] Allowance for deferred tax assets SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Schedule of components of lease cost Lease, Cost [Table Text Block] Required performance bonds Required Performance Bonds Required Performance Bonds Carried participating interest Carried Participating Interest Percentage Represents the carried participating interest percentage. Geographical [Axis] Geographical [Axis] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Acquisitions and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Availability period of revolving-credit Line of Credit Facility, Expiration Period Capitalized costs Capitalized Contract Cost, Gross Foreign income (loss) taxed at different rates Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Jubilee Unit Area And Ten Fields Jubilee Unit Area And Ten Fields [Member] Jubilee Unit Area And Ten Fields Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Treasury stock, at cost, 44,263,269 shares at December 31, 2021 and December 31, 2020, respectively Treasury Stock, Value Weighted average number of shares used to compute net loss per share: Weighted average number of shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Interest cover ratio Debt Instrument, Covenant, Interest Cover Ratio Debt Instrument, Covenant, Interest Cover Ratio Blocks 6 and 11 Blocks 6 and 11 [Member] Pertains Blocks 6 and 11 located offshore Sao Tome Principe [Member] Deferred tax assets: Deferred Tax Assets, Net of Valuation Allowance [Abstract] Oil and gas properties: Oil and Gas Property, Successful Effort Method, Net [Abstract] Schedule of Outstanding Restricted Stock Units Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Other property Property, Plant and Equipment, Other, Gross Fair Value Measurements Fair Value Disclosures [Text Block] Office furniture, fixtures and computer equipment Office Furniture Fixtures And Computer Equipment [Member] Represents the equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities and the long lived, depreciable assets that are used in the creation, maintenance and utilization of information systems. Restructuring charges Restructuring charges Restructuring Charges Greater Tortue FPSO Greater Tortue FPSO [Member] Greater Tortue FPSO Other property, net Other property, net Property, Plant and Equipment, Other, Net GoM Term Loan GoM Term Loan [Member] GoM Term Loan Three-way collars Three-way Collars [Member] Represents a three-way collar derivative contract which establishes a floor and ceiling strike price along with either a sold put or purchased call strike price. Surety Bond Surety Bond [Member] Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Acquisition Accounting Business Combinations Policy [Policy Text Block] Other income—related party Related Party Transaction, Other Revenues from Transactions with Related Party Restructuring Charges Restructuring Charges [Abstract] Derivative [Table] Derivative [Table] Oil and gas assets Oil and gas assets Payments to Acquire Oil and Gas Equipment Tax withholdings on restricted stock units Tax Withholdings For Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Used To Cover Employee Taxes Tax Withholdings For Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Used To Cover Employee Taxes TEN Discoveries Tweneboa Enyenra And Ntomme Discoveries [Member] Represents information pertaining to Tweneboa Enyenra and Ntomme Discoveries. Revenues and other income: Revenue Recognition Revenues [Abstract] Accounts receivable and other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Receivable And Other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Receivable And Other Document Period End Date Document Period End Date Investment in subsidiaries Payments to Acquire Additional Interest in Subsidiaries Lease Contractual Term [Axis] Lease Contractual Term [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Capitalized exploratory well costs charged to expense Capitalized Exploratory Well Cost, Charged to Expense Investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Schedule of property and equipment Property, Plant and Equipment [Table Text Block] Income Statement Location [Domain] Income Statement Location [Domain] Debt term Debt Instrument, Term Volume (mbbls) Derivative, Nonmonetary Notional Amount, Volume Additional shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Oil and Gas Revenue Oil and Gas [Member] Oil and Gas Discoveries [Domain] Oil And Gas Discoveries [Domain] Represents the names of various oil and gas discoveries wherein exploratory activities are carried out. Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Public Issuance Public Issuance [Member] Public Issuance Depletion, depreciation and amortization Results of Operations, Depreciation, Depletion, Amortization and Accretion Net loss per share: Earnings Per Share [Abstract] Oil and Gas Agreement [Domain] Oil And Gas Agreement [Domain] Represents activity by specific oil and gas agreements. Payments on long-term debt Payments on long-term debt Repayments of Other Long-term Debt Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Oil and gas revenue Oil and gas revenue Revenues Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Costs and expenses: Costs and Expenses [Abstract] Redemption price percentage Debt Instrument Redemption Price Percentage With Proceeds From Equity Offerings Percentage of price of original principal amount of debt at which debt can be redeemed by the issuer with proceeds from equity offerings. Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Tax withholdings on restricted stock units Payments For Tax Withholdings On Restricted Stock Units Payments For Tax Withholdings On Restricted Stock Units Entity Current Reporting Status Entity Current Reporting Status 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] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Amortization—deferred financing costs Amortization of Debt Issuance Costs Bureau Of Ocean Energy Management Bureau Of Ocean Energy Management [Member] Bureau Of Ocean Energy Management [Member] Counterparty Name [Axis] Counterparty Name [Axis] Balance (in shares) Balance (in shares) Shares, Issued Dividends Dividends United States UNITED STATES Measurement input, discount rate Measurement Input, Discount Rate [Member] Percentage converted from carried to participating Percentage To Be Converted From Carried To Participating Represents the percentage to be converted from carried to participating. Debt Instrument, Redemption, Period One Debt Instrument, Redemption, Period One [Member] Leases Leases [Abstract] 7.750% Senior Notes 7.750% Senior Notes Due 2027 [Member] 7.750% Senior Notes Due 2027 Income Taxes Income Tax, Policy [Policy Text Block] LIBOR London Interbank Offered Rate (LIBOR) [Member] Schedule of oil derivative contracts Schedule of Price Risk Derivatives [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Facility Interest Or Senior Notes Plus The Corporate Revolver Facility interest Or Senior Notes Plus The Corporate Revolver [Member] Facility interest Or Senior Notes Plus The Corporate Revolver Derivative Contract Term [Axis] Derivative Contract Term [Axis] Represents the grouping of derivative contract terms. Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Income Taxes Income Tax Disclosure [Text Block] Related Party [Domain] Related Party [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Applicable margin Debt Instrument, Basis Spread on Variable Rate Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Asset retirement obligations Asset Retirement Obligations, Noncurrent Not designated as hedging instruments Not Designated as Hedging Instrument [Member] Credit Facility [Axis] Credit Facility [Axis] Entity Address, Address Line One Entity Address, Address Line One Principles of Consolidation Consolidation, Policy [Policy Text Block] Entity Shell Company Entity Shell Company Total current liabilities Liabilities, Current Eliminations Intersegment Eliminations [Member] Repayment of debt, voluntary early repayment Repayment Of Debt, Voluntary Early Repayment Repayment Of Debt, Voluntary Early Repayment Long-term note receivable from subsidiary Notes Receivable, Related Parties, Noncurrent Sold Put (usd per bbl) Derivative Sold Put Average Price Risk Option Strike Price Derivative Sold Put Average Price Risk Option Strike Price Repayment of debt, regular scheduled maturity Repayment Of Debt, Regular Scheduled Maturity Repayment Of Debt, Regular Scheduled Maturity Current Fiscal Year End Date Current Fiscal Year End Date Business combination, purchase price adjustments Business Combination, Purchase Price Adjustments Business Combination, Purchase Price Adjustments Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Cash, Cash Equivalents and Restricted Cash Restricted Cash and Investments [Abstract] Statement [Table] Statement [Table] Schedule of other information leases Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Recent Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Settlement of payment obligation of capital expenditures Noncash Settlement, Payment Obligations Of Capital Expenditures Noncash Settlement, Payment Obligations Of Capital Expenditures Compensation expense not yet recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Subsequent Event Subsequent Event [Member] Foreign net operating losses Deferred Tax Assets, Operating Loss Carryforwards, Foreign Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Liabilities settled during period Asset Retirement Obligation, Liabilities Settled Scenario [Domain] Scenario [Domain] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of derivative instruments by balance sheet location Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Income Taxes [Table] Income Taxes [Table] Disclosures pertaining to income taxes. Operating lease cost Operating Lease, Cost Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Gain on sale of assets Gain on sale of assets Gain on sale of assets Gain (Loss) on Disposition of Oil and Gas and Timber Property Interval period for payment of interest Interest Payment Interval Period Maximum Represents maximum interval period after the first day of the interest period at which the interest is to be paid, if the interest period is longer than six months. Deferred income taxes Deferred Deferred Income Tax Expense (Benefit) Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] NYMEX WTI NYMEX WTI [Member] NYMEX WTI Hedging Designation [Domain] Hedging Designation [Domain] Federal statutory income tax rate percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net loss Net loss Net loss allocable to common stockholders Net Income (Loss) Attributable to Parent Receivables Receivable [Policy Text Block] Other assets (right-of-use assets) Operating Lease, Right-of-Use Asset 7.500% Senior Notes 7.500% Senior Notes Due 2028 [Member] 7.500% Senior Notes Due 2028 Third Party Third Party [Member] Third Party [Member] Income Statement Location [Axis] Income Statement Location [Axis] Receivables: Receivables, Net, Current [Abstract] Schedule I - Condensed Parent Company Financial Statements Condensed Financial Information of Parent Company Only Disclosure [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Facility The Facility [Member] The Facility [Member] Schedule of estimated repayments of debt Schedule of Maturities of Long-term Debt [Table Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Distance from Yakaar-2 well to Yakaar-1 exploration well Distance Between Exploration Wells Distance Between Exploration Wells Additional paid-in capital Additional Paid in Capital, Common Stock Foreign net operating loss carryforwards expiring in 2022 Operating Loss Carry Forwards Foreign Expiring Next Twelve Months Operating Loss Carry Forwards Foreign Expiring Next Twelve Months Mauritania / Senegal Mauritania And Senegal [Member] Mauritania And Senegal [Member] Segments [Axis] Segments [Axis] Entity File Number Entity File Number Redemption price, as a percent of the of principal amount Debt Instrument, Redemption Price, Percentage Schedule of other expenses, net incurred Schedule of Other Nonoperating Income (Expense) [Table Text Block] Equity-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition U.S. tax loss carryback rate differential Effective Income Tax Rate Reconciliation, Carryback Income Tax Rate Differential, Domestic, Amount Effective Income Tax Rate Reconciliation, Carryback Income Tax Rate Differential, Domestic, Amount Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Valuation and Qualifying Accounts SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Deferred financing costs Payments of Financing Costs Variable lease cost Variable Lease, Cost Commitment fee percentage of the then-applicable margin when commitment is not available for utilization Line Of Credit Facility Unavailable Capacity Commitment Fee Percentage The commitment fees, expressed as a percentage of the then-applicable respective margin, for unavailable credit capacity under the credit facility. Long-term investments and receivables, net Long-term Investments and Receivables, Net Hydrocarbons inventory Energy Related Inventory, Petroleum Fair value of awards vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value 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 GTA UUOA Greater Tortue Ahmeyim Unitization And Unit Operating Agreement [Member] Greater Tortue Ahmeyim Unitization And Unit Operating Agreement [Member] Future contingent consideration Future Contingent Consideration Future Contingent Consideration Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Provisional oil sales contracts Derivative, not designated as hedge, gain (loss) Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Schedule of components of the provision for income taxes attributable to the entity's income (loss) before income taxes Schedule Of Income Tax Provision By Jurisdiction [Table Text Block] Tabular disclosure of current and deferred provision for income taxes by jurisdictions. Restricted Cash Restricted Cash and Cash Equivalents Items [Line Items] Credit Facility [Domain] Credit Facility [Domain] Assets Assets [Abstract] 2024 Long-Term Debt, Maturity, Year Three Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] United States net operating losses Deferred Tax Assets, Operating Loss Carryforwards, Domestic Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Jubilee UUOA Jubilee Unitization And Unit Operating Agreement [Member] Represents the percentage of unit interest, retroactively applied, held by the entity after redetermination process under the terms of a operating agreement. Debt Instrument [Axis] Debt Instrument [Axis] Decrease in prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Accretion expense Asset Retirement Obligation, Accretion Expense Oil and Gas Blocks [Domain] Oil And Gas Blocks [Domain] Represents the activity by individual oil and gas blocks. Net leverage ratio Debt Instrument, Covenant, Net Leverage Ratio Debt Instrument, Covenant, Net Leverage Ratio Long-term liabilities: Liabilities, Noncurrent [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Increase in margin Debt Instrument, Increase (Decrease) In Basis Spread Of Variable Rate Debt Instrument, Increase (Decrease) In Basis Spread Of Variable Rate Related Party [Axis] Related Party [Axis] Number of wells Number Of Wells Number Of Wells Secured Debt Secured Debt [Member] GNPC Ghana National Petroleum Corporation [Member] Represents the Ghana National Petroleum Corporation, a unit partner of an entity. Decrease due to/from related party Increase (Decrease) in Due from to Related Parties The increase (decrease) during the reporting period in the aggregate amount of obligations due from or to be paid to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management; an entity and its principal owners, management, or member of their immediate families; affiliates; or other parties with the ability to exert significant influence. Accumulated depreciation Property, Plant and Equipment, Other, Accumulated Depreciation Schedule of tax effects of significant temporary differences to deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Oil and gas imbalances Oil and Gas Imbalance Asset Liability The value of oil and gas balancing asset or liability, as of the end of the period. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Carry Advance Agreements Carry Advance Agreements [Member] Carry Advance Agreements [Member] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Exploratory well costs capitalized for a period of four to six years Capitalized Exploratory Well Costs Greater Than Or Equal To Four Years And Less Than Six Years Capitalized Exploratory Well Costs Greater Than Or Equal To Four Years And Less Than Six Years Undrawn availability Line of Credit Facility, Remaining Borrowing Capacity 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Guinea Equatorial De Petroleos Guinea Equatorial De Petroleos [Member] The Equatorial Guinean national oil company, Guinea Equatorial De Petroleos Audit Information [Abstract] Audit Information [Abstract] Proceeds on sale of assets Proceeds from Sale of Oil and Gas Property and Equipment Allowance for credit losses SEC Schedule, 12-09, Allowance, Credit Loss [Member] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Provisional oil sales Provisional Oil Sales [Member] Provisional Oil Sales [Member] Acquisitions and Divestitures Property Plant And Equipment Acquisitions And Divestitures [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Schedule of oil and gas revenue Disaggregation of Revenue [Table Text Block] Exploration and Development Costs Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block] 2026 Long-Term Debt, Maturity, Year Five Outstanding unvested awards activity Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Change in fair value of derivatives Change in fair value of derivatives Unrealized Gain (Loss) on Derivatives Derivatives - related party Derivative Liabilities Current Related Party Derivative Liabilities Current Related Party Derivatives, net Derivatives, net Gain (Loss) On Commodity Derivative Instruments, Net Pretax Aggregate net gain (loss) on commodity derivative instruments recognized in earnings during the period, before tax effects. Number of shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Operating cash flows for operating leases Operating Lease, Payments Derivatives - related party Derivative Liabilities, Related Party, Noncurrent Derivative Liabilities, Related Party, Noncurrent Unsuccessful well costs and leasehold impairments Exploration Abandonment and Impairment Expense Blocks Offshore Sao Tome And Principe, Suriname, Namibia, And South Africa Blocks Offshore Sao Tome And Principe, Suriname, Namibia, And South Africa [Member] Blocks Offshore Sao Tome And Principe, Suriname, Namibia, And South Africa Total purchase price Business Combination, Consideration Transferred Outstanding debt principal Total Long-term Debt, Gross Long-term receivables Oil and Gas Joint Interest Billing Receivables, Noncurrent Net loss per share: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Settlement of accounts payable Noncash Settlement, Accounts Payable Noncash Settlement, Accounts Payable Components of the provision for income taxes attributable to income (loss) before income taxes Income Tax Expense (Benefit), Continuing Operations [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Other Other Accrued Liabilities, Current Revenue payable Contract with Customer, Liability, Current 2026 Lessee, Operating Lease, Liability, to be Paid, Year Five Income Taxes Income Taxes [Line Items] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Derivative Financial Instruments Derivative [Line Items] Property and equipment: Property, Plant and Equipment, Net [Abstract] Namibia Blocks Offshore Namibia [Member] Blocks Offshore Namibia Operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net Income (Loss) Per Share Earnings Per Share [Text Block] Minimum Minimum [Member] Derivatives—related party Derivative Asset, Related Party, Noncurrent Derivative Asset, Related Party, Noncurrent Amount outstanding Long-term Line of Credit 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Farm-out Agreement Farm Out Agreement [Member] Represents details pertaining to the farm-out agreement, where by a third party acquired a participating interest in a block. Foreign net operating loss carryforwards Operating Loss Carryforwards, Foreign Amount of foreign operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Preference shares, authorized shares (in shares) Preferred Stock, Shares Authorized Amount of cash consideration received for frontier exploration portfolio Cash Consideration From Sale Of Oil And Gas Property And Equipment Cash Consideration From Sale Of Oil And Gas Property And Equipment Operating expenses of acquiree since acquisition date Business Combination, Pro Forma Information, Operating Expenses Of Acquiree Since Acquisition Date, Actual Business Combination, Pro Forma Information, Operating Expenses Of Acquiree Since Acquisition Date, Actual Other assets: Other Assets, Noncurrent [Abstract] 2025 Long-Term Debt, Maturity, Year Four Jubilee Unit Area Jubilee Unit Area [Member] Jubilee Unit Area Public offering of common stock Stock Issued During Period, Value, New Issues Restricted cash Restricted cash - long-term Restricted Cash and Cash Equivalents, Noncurrent Debt Debt Disclosure [Text Block] Equity-based Compensation Share-based Payment Arrangement [Text Block] Senior Notes Senior Notes [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Receivables: Oil sales Receivables, Oil Sales [Member] Receivables, Oil Sales [Member] Dividends Dividends Payments of Ordinary Dividends, Common Stock Leases Lessee, Leases [Policy Text Block] General and administrative recoveries—related party Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Foreign net operating loss carryforwards expiring in 2027 Operating Loss Carry Forwards Foreign Expiring Year Six Operating Loss Carry Forwards Foreign Expiring Year Six Public offering of common stock (in shares) Stock Issued During Period, Shares, New Issues Number of reportable geographic areas Number of reportable segments Number of Reportable Segments Amount outstanding under letters of credit Letters of Credit Outstanding, Amount Interest and other financing costs, net Interest and other financing costs, net Interest Expense (Income), Net Interest costs charged to earnings during the period, including amortization of deferred financing costs, net gain (loss) on interest rate swap derivatives, loss on extinguishment of debt, other financing charges and net of interest income. Oil and Gas Discoveries [Axis] Oil and Gas Discoveries [Axis] Represents the details pertaining to various oil and gas discoveries wherein exploratory activities are carried out. Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Inventories Inventory, Net [Abstract] Weighted Average Price per Bbl [Abstract] Weighted Average Dated Brent Price per Bbl [Abstract] Weighted Average Dated Brent Price Per Bbl [Abstract] Notes receivable from partners Payments to Acquire Notes Receivable Scheduled maturities of debt during the five year period and thereafter Long-term Debt, Fiscal Year Maturity [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Proceeds from debt, net of issuance costs Proceeds from Debt, Net of Issuance Costs Write down of materials and supplies Loss on disposal of inventory Inventory Write-down Facilities insurance modifications, net Facilities Insurance Modifications Expense (Income) Costs associated with facilities modifications and any related insurance recoveries. Estimates of Proved Oil and Natural Gas Reserves Estimates of Proved Oil and Natural Gas Reserve [Policy Text Block] Disclosure of accounting policy for estimates of proved oil and natural gas reserves. Auditor Name Auditor Name Cover [Abstract] Cover [Abstract] Total costs and expenses Costs and Expenses Joint Interest Billings and Long-term Receivables Oil and Gas Joint Interest Billing Long Term Receivable Disclosure [Text Block] Represents all disclosure related to joint interest billings in one text block. Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Treasury stock shares (in shares) Treasury Stock, Shares Advances under production prepayment agreement Proceeds From Advances Under Production Prepayment Agreement Proceeds From Advances Under Production Prepayment Agreement Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Oil and Gas Operating Agreements [Domain] Oil And Gas Operating Agreements [Domain] Represents activity by specific oil and gas operating agreements. Reclassification due to determination of proved reserves Reclassification to Well, Facilities, and Equipment Based on Determination of Proved Reserves Financial Instrument [Axis] Financial Instrument [Axis] Carrying Value Reported Value Measurement [Member] Oil and Gas Exploration and Production Industries Disclosures [Abstract] Oil and Gas Exploration and Production Industries Disclosures [Abstract] Accumulated depletion Oil and Gas Property, Successful Effort Method, Accumulated Depreciation, Depletion and Amortization Ceiling (usd per bbl) Derivative, Average Cap Price Common Stock Common Stock [Member] Non-deductible insurance premiums Effective Income Tax Rate Reconciliation, Nondeductible Expense, Insurance Premiums Effective Income Tax Rate Reconciliation, Nondeductible Expense, Insurance Premiums, Amount Cash paid for: Cash Paid for [Abstract] Exploration, development and production Accrued Exploration Development and Production Costs, Current Carrying value as of the balance sheet date of exploration, development and production costs that are incurred and payable. It is used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued liabilities (current maturities of leases) Operating Lease, Liability, Current Hedging Designation [Axis] Hedging Designation [Axis] Equity-based compensation Share-based Payment Arrangement, Noncash Expense Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Depreciation expense Depreciation Trafigura Trafigura [Member] Trafigura Schedule of interest and other financing costs, net Schedule Of Interest And Other Financing Costs [Table Text Block] Tabular disclosure of the detailed components of interest and other financing costs. Treasury Stock Treasury Stock [Member] Increase (decrease) in accrued liabilities Increase (Decrease) in Accrued Liabilities Income taxes, net of refund received Income Taxes Paid Swap (usd per bbl) Derivative, Swap Type, Average Fixed Price Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Deepwater Tano Block Joint Operating Agreement Deepwater Tano Block Joint Operating Agreement [Member] Deepwater Tano Block Joint Operating Agreement Consolidated capital expenditures Payments to Acquire Property, Plant, and Equipment Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Share of development costs to be financed, up to Share Of Development Costs To Be Financed Share Of Development Costs To Be Financed Asset retirement obligations: Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Market/Service Vesting Restricted Stock Units Market And Service Vesting Restricted Stock Units [Member] Represents information pertaining to the restricted stock units with market and service vesting criteria. Derivatives, net Derivative [Member] Consolidation Items [Axis] Consolidation Items [Axis] Measurement Input Type [Axis] Measurement Input Type [Axis] Common shares, issued shares (in shares) Common Stock, Shares, Issued Preference shares, issued shares (in shares) Preferred Stock, Shares Issued Extension period Debt Instrument, Term, Extension Debt Instrument, Term, Extension Joint Interest Billings Joint Interest Billings Unproved properties Unproved Oil and Gas Property, Successful Effort Method Entity Address, City or Town Entity Address, City or Town Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Capitalized interest Interest Costs Capitalized Oil and Gas Blocks [Axis] Oil and Gas Blocks [Axis] Represents activity related to various oil and gas blocks. Non-cash activity: Noncash Investing and Financing Items [Abstract] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Derivatives Derivatives assets—long-term Derivative Asset, Noncurrent Measurement Frequency [Domain] Measurement Frequency [Domain] Debt instrument, interest rate, effective percentage Debt Instrument, Interest Rate, Effective Percentage Joint interest billings Oil and Gas Joint Interest Billing Receivables [Line Items] Accumulated deficit Retained Earnings (Accumulated Deficit) Beginning asset retirement obligations Ending asset retirement obligations Asset Retirement Obligation January 2023 - December 2023 Term January 2023 To December 2023 [Member] Term January 2023 To December 2023 Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Entity Filer Category Entity Filer Category Ghana Ghana Segment [Member] Ghana Segment [Member] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Schedule of derivative instruments by location of gain/(loss) Derivative Instruments, Gain (Loss) [Table Text Block] Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Fair Value Estimate of Fair Value Measurement [Member] Capitalized interest Capitalized interest Interest Costs Capitalized Adjustment Number of exploration wells Number Of Exploration Wells Represents the number of exploration wells. Restricted stock awards and units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Other Other Capital Expenditure Expense Other Capital Expenditure Expense Amendment Flag Amendment Flag Equity Components [Axis] Equity Components [Axis] Changes in valuation and qualifying Accounts SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Yakaar and Teranga Discoveries Yakaar and Teranga Discoveries [Member] Yakaar and Teranga Discoveries Sale of Stock [Domain] Sale of Stock [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Inventories Inventory, Net Schedule of Business Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Other income—related party Related Party Transaction, Other Income Related Party Transaction, Other Income Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five BirAllah and Orca Discoveries BirAllah and Orca Discoveries [Member] BirAllah and Orca Discoveries Product and Service [Axis] Product and Service [Axis] Block EG-24 Block EG-24 [Member] Block EG-24 located offshore Equatorial Guinea. [Member] Preference shares, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Entity Public Float Entity Public Float Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Short-term lease cost Short-term Lease, Cost Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Debt Instrument, Redemption, Period Three Debt Instrument, Redemption, Period Three [Member] Bridge Notes Bridge Notes [Member] Floating Rate Senior Notes Due 2022 Other, net Other Nonoperating Gains (Losses) Statement [Line Items] Statement [Line Items] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Restructuring Charges Costs Associated with Exit or Disposal Activity or Restructuring [Policy Text Block] Debt Instrument, Redemption, Period Five Debt Instrument, Redemption, Period Five [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Accrued liabilities: Accrued Liabilities, Current [Abstract] Other, net Interest And Other Financing Costs Other Net Other net interest income expense incurred during the period. Floor (usd per bbl) Derivative, Average Floor Price Current asset retirement obligations Asset Retirement Obligation, Current Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Valuation allowance Deferred Tax Assets, Valuation Allowance Accounts payable to subsidiaries Accounts Payable, Related Parties, Current Corporate & Other Corporate, Non-Segment [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Document Annual Report Document Annual Report Forecast Forecast [Member] Net proceeds from issuance of common stock Net proceeds from issuance of common stock Proceeds from Issuance of Common Stock Total assets Total assets Assets Exploration expenses Exploration Expense Plan Name [Domain] Plan Name [Domain] Depletion, Depreciation and Amortization Depreciation, Depletion, and Amortization [Policy Text Block] Interest, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activities Geographical [Domain] Geographical [Domain] Parent Company Parent Company [Member] Period for contractual future interest payments Restricted Cash Required, Period For Contractual Future Payments Restricted Cash Required, Period For Contractual Future Payments Derivative Contract [Domain] Derivative Contract [Domain] Total long-term liabilities Liabilities, Noncurrent Accounting Policies Significant Accounting Policies [Text Block] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Other Other Receivables, Net, Current Lease Contractual Term [Domain] Lease Contractual Term [Domain] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Segments [Domain] Segments [Domain] Oil and gas revenue Sales [Member] Block 11 Block 11 [Member] Block 11 located offshore Sao Tome and Principe. [Member] Non-deductible and other items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Lease, Cost [Abstract] Lease, Cost [Abstract] Deferred tax liabilities Deferred Income Tax Liabilities, Net Aging of capitalized exploratory well costs and number of projects for which exploratory well costs were capitalized for more than one year Capitalized Exploratory Well Costs [Abstract] Derivatives Derivatives liabilities—long-term Derivatives Derivative Liability, Noncurrent Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Schedule of reconciliation of income tax expense and the reported effective tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Gain on insurance settlements Gain (Loss) On Insurance Settlements Amount of gain (loss) recognized in settlement of insurance claims. Accounts payable Accounts Payable, Current Depletion, depreciation and amortization (including deferred financing costs) Depreciation and amortization Depreciation, Depletion and Amortization Impairment of long-lived assets Impairment, Long-Lived Asset, Held-for-Use Schedule of company's assets and liabilities that are measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Derivatives Derivative Liability, Settled, Current Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable for settled derivative contracts. Increase in inventories Increase (Decrease) in Inventories Other Other Assets Proved oil and gas properties Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Proved Oil And Gas Properties Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Proved Oil And Gas Properties Other income, net Other Operating Income (Expense), Net Financial Instruments [Domain] Financial Instruments [Domain] Receivables Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Entity Central Index Key Entity Central Index Key Total lease cost Lease, Cost Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Other long-term liabilities Other Liabilities, Noncurrent Condensed Financial Information Disclosure [Abstract] Condensed Financial Information Disclosure [Abstract] Schedule of debt Schedule of Long-term Debt Instruments [Table Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Trading Symbol Trading Symbol Derivative asset, fair value Derivative Asset Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Available borrowing base Line of Credit Facility, Current Borrowing Capacity Proved oil and gas reserves, fair value Proved Oil And Gas Properties, Fair Value Proved Oil And Gas Properties, Fair Value Long-term debt, net Long-term Debt, Excluding Current Maturities Blocks Offshore Sao Tome and Principe Suriname and Namibia Blocks Offshore Sao Tome and Principe Suriname and Namibia [Member] Blocks Offshore Sao Tome and Principe Suriname and Namibia Liabilities: Liabilities, Fair Value Disclosure [Abstract] Share-based compensation expense Share-based Payment Arrangement, Expense January 2022 - December 2022 Term January 2022 To December 2022 [Member] Term January 2022 To December 2022 Schedule of estimated useful lives of other property Property, Plant And Equipment Schedule Of Estimated Lives [Table Text Block] Tabular disclosure of the useful life of physical assets that are used in the normal conduct of business to produce goods and services and not intended for sale. Acquisition of oil and gas properties Payments to Acquire Oil and Gas Property and Equipment Schedule of components of income (loss) before income taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Number of shares issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Gulf of Mexico U.S. Gulf of Mexico U.S. Gulf Of Mexico [Member] U.S. Gulf Of Mexico [Member] Current assets: Assets, Current [Abstract] Commitment fee percentage of the then-applicable margin when commitment is available for utilization Line Of Credit Facility Available Capacity Commitment Fees Percentage The commitment fees, expressed as a percentage of the then-applicable respective margin, for available but unused credit capacity under the credit facility. Participating interest percentage Participating Interest Percentage Represents the participating interest percentage. Impairment of Long-lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Interest income, long-term notes receivable Interest Income, Long-Term Notes Receivable Interest Income, Long-Term Notes Receivable Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation Disclosure [Abstract] Deferred interest Deferred interest Amount of deferred interest during the period. Foreign capitalized operating expenses Deferred Tax Assets, Foreign Capitalized Operating Expenses Amount of deferred tax asset attributable to taxable temporary differences from foreign capitalized operating expenses. Recurring basis Fair Value, Recurring [Member] Derivative Trading Index [Domain] Derivative Trading Index [Domain] [Domain] for Derivative Trading Index [Axis] Fair value of liabilities assumed: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Interest Interest Payable, Current Anadarko WCTP Anadarko WCTP [Member] Anadarko WCTP Block 6 Block 6 [Member] Block 6 located offshore Sao Tome and Principe. [Member] General and administrative expenses Accrued General And Administrative Expenses, Current Carrying value as of the balance sheet date of expenses of managing and administering the affairs of the entity that are incurred and payable. It is used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Depletion expense Depletion of Oil and Gas Properties Measurement Basis [Axis] Measurement Basis [Axis] Cash settlements on commodity hedges derivatives Cash Settlements On Commodity Derivatives Represents the amount of cash settlements on commodity derivatives Auditor Firm ID Auditor Firm ID Proceeds on sale of assets Proceeds From Sale Of Oil And Gas Property And Equipment, Including Amounts In Other Receivables Proceeds From Sale Of Oil And Gas Property And Equipment, Including Amounts In Other Receivables Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] 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 Reduction of ultimate interest upon full exercise of pre-emption rights Decrease Of Ultimate Interest Upon Full Exercise Of Pre-emption Rights Decrease Of Ultimate Interest Upon Full Exercise Of Pre-emption Rights Capitalized Interest Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract] Loan life coverage ratio Loan Life Coverage Ratio Loan Life Coverage Ratio Cash consideration paid Payments to Acquire Businesses, Gross Frequency period of amortization of principal Debt Instrument, Amortization Of Principal, Frequency Period Debt Instrument, Amortization Of Principal, Frequency Period Vesting percentage of the awards granted Share Based Compensation Arrangement by Share Based Payment Award, Award Vesting Percentage Represents the percentage the granted awards can potentially vest up to. Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Additions to capitalized exploratory well costs pending the determination of proved reserves  Capitalized Exploratory Well Cost, Additions Pending Determination of Proved Reserves Appraisal plan submission period from discovery Appraisal Plan Submission Period From Discovery Appraisal Plan Submission Period From Discovery Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Commitments and contingencies Operating Leased Assets [Line Items] TEN Fields TEN Fields [Member] TEN Fields Taxes other than income Accrual for All Other Taxes Current Carrying value as of the balance sheet date of obligations incurred and payable for taxes other than income taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Tax at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Debt redeemed Extinguishment of Debt, Amount Balance at the beginning of the period Balance at the end of the period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Income taxes Accrued Income Taxes, Current Corporate Revolver Corporate Revolver [Member] Corporate Revolver [Member] Inventories Inventory, Policy [Policy Text Block] Organization Nature of Operations [Text Block] Farm Down Agreement Farm Down Agreement [Member] Farm Down Agreement Derivative Trading Index [Axis] Derivative Trading Index [Axis] Derivative Trading Index [Axis] Oil and gas properties, net Oil and gas properties, net Oil and Gas Property, Successful Effort Method, Net