Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Table]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Table]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Table]
Operating Activities [Axis]
Operating Activities [Axis]
Operating Activities [Domain]
Operating Activities [Domain]
Segment, Continuing Operations [Member]
Continuing Operations [Member]
Discontinued Operations [Member]
Discontinued Operations [Member]
Statement Operating Activities Segment [Line Items]
Statement Operating Activities Segment [Line Items]
Statement Operating Activities Segment [Line Items]
Income (loss) from continuing operations, net of tax
Income (Loss) from Continuing Operations Attributable to Parent
Income (loss) as reported, Discontinued Operations
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Income (loss) as reported
Net Income (Loss) Attributable to Parent
Participating basic earnings
Participating Securities, Distributed and Undistributed Earnings
Basic income (loss) attributable to common stockholders
Net Income (Loss) Available to Common Stockholders, Basic
Reallocation of participating earnings
Dilutive Securities, Effect on Basic Earnings Per Share
Diluted income (loss) attributable to common stockholders
Net Income (Loss) Available to Common Stockholders, Diluted
Compensation and Retirement Disclosure [Abstract]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Type of Deferred Compensation [Axis]
Type of Deferred Compensation [Axis]
Type of Deferred Compensation, All Types [Domain]
Type of Deferred Compensation, All Types [Domain]
Stock Options [Member]
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding at beginning of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Number of Options awarded
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Options exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Number of Shares, Outstanding and expected to vest at end of year
Number of Shares, Exercisable at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Weighted Average Exercise Price, Outstanding at beginning of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Options awarded
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted Average Exercise Price, Options expired and forfeited
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Options exercised
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding and expected to vest at end of year
Weighted Average Exercise Price, Exercisable at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Remaining Contractual Life, Outstanding and expected to vest at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Life, Exercisable at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Aggregate Intrinsic Value, Outstanding and expected to vest at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value, Exercisable at end of year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Net Income Attributable to Noncontrolling Interest
Net Income (Loss) Attributable to Noncontrolling Interest
Income loss from continuing operations before tax
Income loss from continuing operations before tax
Income loss from continuing operations before tax
U.S. federal statutory tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Income Tax Reconciliation, State and Local Income Taxes
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Income Tax Reconciliation, Other Adjustments
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Income Tax Expense (Benefit)
Income Tax Expense (Benefit)
Effective Income Tax Rate, Continuing Operations
Effective Income Tax Rate Reconciliation, Percent
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Restricted Stock Equity Awards [Member]
Restricted Stock Equity Awards [Member]
Restricted Stock-Equity Awards [Member]
Restricted Stock Liability Awards [Member]
Restricted Stock Liability Awards [Member]
Restricted Stock Liability Awards [Member]
Performance Units [Member]
Performance Units [Member]
Performance Units [Member]
Performance Unit Awards [Member]
Performance Shares [Member]
Pioneer Southwest Ltip [Member]
Pioneer Southwest Ltip [Member]
Pioneer Southwest Ltip [Member]
Sendero B Units [Member]
Sendero B Units [Member]
Sendero B Units [Member]
Employee Stock [Member]
Employee Stock [Member]
Compensation Expense For Incentive Awards [Member]
Compensation Expense For Incentive Awards [Member]
Compensation Expense For Incentive Awards [Member]
Deferred Compensation Arrangement with Individual, Compensation Expense
Deferred Compensation Arrangement with Individual, Compensation Expense
Income Tax Expense (Benefit)
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative [Table]
Derivative [Table]
Derivative Instrument Risk [Axis]
Derivative Instrument [Axis]
Derivative Contract Type [Domain]
Derivative Contract [Domain]
Oil contracts [Member]
Oil contracts [Member]
Oil contracts [Member]
Oil contracts, price per bbl [Member]
Oil contracts, price per bbl [Member]
Oil contracts, price per bbl [Member]
NGL contract, in BBLS [Member]
NGL contract, in BBLS [Member]
NGL contract, in BBLS [Member]
NGL contracts, price per BBL [Member]
NGL contracts, price per BBL [Member]
NGL contracts, price per BBL [Member]
Gas contracts, in MMBTU [Member]
Gas contracts, in MMBTU [Member]
Gas contracts, in MMBTU [Member]
Gas contracts, price per MMBTU [Member]
Gas contracts, price per MMBTU [Member]
Gas contracts, price per MMBTU [Member]
Basis Index Swaps [Member]
Basis Index Swaps [Member]
Basis Index Swaps Member.
Basis Index Swap contracts, price per MMBTU [Member]
Basis Index Swap contracts, price per MMBTU [Member]
Basis Index Swap contracts, price per MMBTU [Member]
July 15, 2022 Interest Rate Swaps [Member]
July 15, 2022 Interest Rate Swaps [Member]
July 15, 2022 Interest Rate Swaps [Member]
Trading Activity, by Type [Axis]
Trading Activity [Axis]
Trading Activity, by Type [Domain]
Trading Activity, by Type [Domain]
Rollfactor Swap Contracts for March Through December 2014 [Member]
Rollfactor Swap Contracts for March Through December 2014 [Member]
Rollfactor Swap Contracts for March Through December 2014 [Member]
Rollfactor Swap Contracts for Year 2 [Member]
Rollfactor Swap Contracts for Year 2 [Member]
Rollfactor Swap Contracts for Year 2 [Member]
Rollfactor Swap Contracts [Member]
Rollfactor Swap Contracts [Member]
Rollfactor Swap Contracts [Member]
Collar Contracts With Short Puts for Next Twelve Months [Member]
Collar Contracts With Short Puts for Next Twelve Months [Member]
Collar Contracts With Short Puts for Next Twelve Months [Member]
Collar Contracts for Next Twelve Months [Member]
Collar Contracts for Next Twelve Months [Member]
Collar Contracts for Next Twelve Months [Member]
Swap Contracts for March Through December 2014 [Member]
Swap Contracts for March Through December 2014 [Member]
Swap Contracts for March Through December 2014 [Member]
Swap Contracts for April Through October 2014 [Member]
Swap Contracts for April Through October 2014 [Member]
Swap Contracts for April Through October 2014 [Member]
Basis Swap Contracts for March 2014 [Member]
Basis Swap Contracts for March 2014 [Member]
Basis Swap Contracts for March 2014 [Member]
Basis Swap Contracts for April Through October 2014 [Member]
Basis Swap Contracts for April Through October 2014 [Member]
Basis Swap Contracts for April Through October 2014 [Member]
Basis Swap Contracts for April Through December 2014 [Member]
Basis Swap Contracts for April Through December 2014 [Member]
Basis Swap Contracts for April Through December 2014 [Member]
Derivative, by Nature [Axis]
Derivative, by Nature [Axis]
Derivative, Name [Domain]
Derivative, Name [Domain]
Short Put [Member]
Short Put [Member]
Short Put [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Derivative, Nonmonetary Notional Amount
Derivative, Nonmonetary Notional Amount
Derivative, Swap Type, Average Fixed Price
Derivative, Swap Type, Average Fixed Price
Derivative, Average Cap Price
Derivative, Average Cap Price
Derivative, Average Floor Price
Derivative, Average Floor Price
Derivative, Notional Amount, Price Per Unit
Derivative, Notional Amount, Price Per Unit
The price per unit of the notional amount of the derivative contract expressed in nonmonetary units. For example, the price per barrel specified in a fuel oil forward purchase contract.
Swap Multiple Second Nearby Month
Swap Multiple Second Nearby Month
Swap Multiple Second Nearby Month
Swap Multiple Third Nearby Month
Swap Multiple Third Nearby Month
Swap Multiple Third Nearby Month
Average Daily Index Swaps Price Differential
Average Daily Index Swaps Price Differential
Average Daily Index Swaps Price Differential.
Derivative fixed interest rate
Derivative, Fixed Interest Rate
Derivative fixed interest rate term, years
Derivative Fixed Interest Rate Term
Derivative Fixed Interest Rate Term
Notional amount of debt
Swap Contract Notional Amount Fixed Rate of Interest and Variable LIBOR
Swap Contract Notional Amount Fixed Rate of Interest and Variable LIBOR
Proceeds from Termination of Interest Rate Derivatives
Proceeds from Termination of Interest Rate Derivatives
Proceeds from Termination of Interest Rate Derivatives
Derivative, Variable Interest Rate
Derivative, Variable Interest Rate
Schedule of Financial Assets and Liabilities Not Carried At Fair Value [Abstract]
Schedule of Financial Assets and Liabilities Not Carried At Fair Value [Abstract]
Fair Value Assets and Liabilities Not Carried At Fair Value [Table]
Fair Value Assets and Liabilities Not Carried At Fair Value [Table]
Fair Value Assets and Liabilities Not Carried At Fair Value [Table]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Measurement Basis [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value Measurement [Domain]
Reported Value Measurement [Member]
Reported Value Measurement [Member]
Estimate of Fair Value Measurement [Member]
Estimate of Fair Value Measurement [Member]
Fair Value Assets and Liabilities Not Carried At Fair Value [Line Items]
Fair Value Assets and Liabilities Not Carried At Fair Value [Line Items]
[Line Items] for Fair Value Assets and Liabilities Not Carried At Fair Value [Table]
Long-term Debt
Long-term Debt
Components of Discontinued Operations [Abstract]
Components of Discontinued Operations [Abstract]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Pioneer Alaska [Member]
Pioneer Alaska [Member]
Pioneer Alaska [Member]
Barnett Shale Field [Member]
Barnett Shale Field [Member]
Barnett Shale Field [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Oil and gas
Oil and Gas Revenue
Interest and other
Other Nonoperating Income
Gain on disposition of assets, net
Gain (Loss) on Disposition of Property Plant Equipment
Total revenues and other income from discontinued operations
Total Revenues And Other Income From Discontinued Operations
Total revenues and income from equity affiliates and other income from discontinued operations.
Oil and gas production
Oil and Gas Production Expense
Production and Ad Valorem Taxes From Discontinued Operations
Taxes, Miscellaneous
Depletion, depreciation and amortization
Depreciation, Depletion and Amortization
Impairment of oil and gas properties
Impairment of Oil and Gas Properties
Exploration Abandonment and Impairment Expense
Exploration Abandonment and Impairment Expense
General and administrative
General and Administrative Expense
Accretion of discount on asset retirement obligations
Asset Retirement Obligation, Accretion Expense
Interest
Interest Expense
Other
Other Nonoperating Expense
Costs and expenses, Total
Costs and Expenses
Income from discontinued operations before income taxes
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Current
Current Income Tax Expense (Benefit)
Deferred
Deferred Income Tax Expense (Benefit)
Income (loss) from discontinued operations
Alaskan Petroleum Production Tax Credit
Alaskan Petroleum Production Tax Credit
Alaskan Petroleum Production Tax Credit
Concentration Risks, Types, No Concentration Percentage [Abstract]
Major Customers
Concentration Risk Disclosure [Text Block]
Major Customers And Derivative Counterparties [Abstract]
Major Customers And Derivative Counterparties [Abstract]
Statement [Table]
Statement [Table]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Plains Marketing LP [Member]
Plains Marketing Lp [Member]
Plains Marketing LP [Member]
Enterprise Products Partners L.P. [Member]
Enterprise Products Partners L P [Member]
Enterprise Products Partners L.P. [Member]
Occidental Energy Marketing Inc [Member]
Occidental Energy Marketing Inc [Member]
Occidental Energy Marketing Inc
Statement [Line Items]
Statement [Line Items]
Consolidated oil, NGL and gas revenues represented by the company's purchases
Concentration Risk, Percentage
Number of Shares/Units, Outstanding at beginning of year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Number of Shares granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Forfeitures, number of shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Awards vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Number of Shares/Units, Outstanding at end of year
Weighted Average Grant-Date Fair Value, Outstanding at beginning of year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted Average Grant-Date Fair Value, Shares granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted Average Grant-Date Fair Value, Shares vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Weighted Average Grant-Date Fair Value, Outstanding at end of year
Accounting Policies [Abstract]
Oil Entitlement Assets and Liabilities [Table]
Oil Entitlement Assets and Liabilities [Table]
Oil Entitlement Assets and Liabilities [Table]
Oil and Gas Production Type [Axis]
Oil and Gas Production Type [Axis]
Oil Entitlement Assets and Liabilities [Domain]
Oil Entitlement Assets and Liabilities [Domain]
Oil Entitlement Assets and Liabilities [Domain]
Oil Entitlement Assets and Liabilities [Line Items]
Oil Entitlement Assets and Liabilities [Line Items]
[Line Items] for Oil Entitlement Assets and Liabilities [Table]
Gas Entitlement Assets Amount
Gas Entitlement Assets Amount
Gas Entitlement Assets Amount
Gas Entitlement Assets Volumes In Mmcf
Gas Entitlement Assets Volumes In Mmcf
Gas Entitlement Assets Volumes in MMcf
Gas Entitlement Liabilities Amount
Gas Entitlement Liabilities Amount
Gas Entitlement Liabilities Amount
Gas Entitlement Liabilities Volumes In Mmcf
Gas Entitlement Liabilities Volumes In Mmcf
Gas Entitlement Liabilities Volumes in MMcf
Operating Loss Carryforwards [Table]
Operating Loss Carryforwards [Table]
Income Tax Authority [Axis]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Income Tax Authority [Domain]
Foreign Country [Member]
Foreign Tax Authority [Member]
Tunisia and South Africa [Member]
Tunisia and South Africa [Member]
Tunisia and South Africa [Member]
Internal Revenue Service (IRS) [Member]
Internal Revenue Service (IRS) [Member]
UNITED STATES
UNITED STATES
COLORADO
COLORADO
KANSAS
KANSAS
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration
Deferred Tax Assets, Operating Loss Carryforwards
Deferred Tax Assets, Operating Loss Carryforwards
Deferred Tax Assets, Valuation Allowance
Deferred Tax Assets, Valuation Allowance
Payments for income taxes, net of tax refunds received
Income Taxes Paid, Net
Unrecognized Tax Benefits
Unrecognized Tax Benefits
Interest and Other Income [Abstract]
Interest And Other Income
Other Income and Other Expense Disclosure [Text Block]
Summary Of Open Tax Years, By Jurisdiction
Summary of Income Tax Contingencies [Table Text Block]
Schedule Of Income Tax (Provision) Benefit Allocation
Schedule of Income Tax Expense (Benefit) Intraperiod Allocation [Table Text Block]
A schedule of the company's income tax expense (benefit), and its allocation among continuing operations, discontinued operations, extraordinary items, other comprehensive income, and items charged or credited directly to shareholders' equity.
Income Tax (Provision) Benefit Attributable To Income From Continuing Operations
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule Of Effective Income Tax Rate Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule Of Deferred Tax Assets And Deferred Tax Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Net Income Per Share Attributable to Common Stockholders [Abstract]
Net Income Per Share Attributable to Common Stockholders [Abstract]
Earnings Per Share, Policy [Policy Text Block]
Earnings Per Share, Policy [Policy Text Block]
Capitalized Exploratory Well Costs [Abstract]
Capitalized Exploratory Well and Project Activity [Table]
Capitalized Exploratory Well and Project Activity [Table]
Capitalized Exploratory Well and Project Activity [Table]
Project [Axis]
Project [Axis]
Project [Domain]
Project [Domain]
Project [Domain]
Capitalized exploratory costs [Member]
Capitalized exploratory costs [Member]
Capitalized exploratory costs [Member]
Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward]
Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward]
Capitalized Exploratory Well Costs, Beginning Balance
Capitalized Exploratory Well Costs
Capitalized Exploratory Well Cost, Additions Pending Determination of Proved Reserves
Capitalized Exploratory Well Cost, Additions Pending Determination of Proved Reserves
Reclassification due to determination of proved reserves
Reclassification to Well, Facilities, and Equipment Based on Determination of Proved Reserves
Capitalized Exploratory Well Cost Assets Disposition
Capitalized Exploratory Well Cost Assets Disposition
Capitalized Exploratory Well Cost Assets Disposition
Exploratory well costs charged to exploration expense
Capitalized Exploratory Well Cost, Charged to Expense
Capitalized Exploratory Well Costs, Ending Balance
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net
Expected option life - years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Capitalized Exploratory Well And Project Activity
Capitalized Exploratory Well And Project Activity
Capitalized Exploratory Well And Project Activity
Capitalized Exploratory Costs And The Number Of Projects For Which Exploratory Costs Have Been Capitalized
Schedule of Projects with Exploratory Well Costs Capitalized for More than One Year [Table Text Block]
Statement of Comprehensive Income [Abstract]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Net income (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Other comprehensive activity:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net hedge (gains) losses included in continuing operations
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax
Income tax (benefit) provision
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax
Other comprehensive activity
Other Comprehensive Income (Loss), Net of Tax
Comprehensive income (loss)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income attributable to the noncontrolling interests
Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest
Comprehensive income (loss) attributable to common stockholders
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies
Commitments and Contingencies Disclosure [Text Block]
Related Party Transactions [Abstract]
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Statement, Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Additional Paid-In Capital [Member]
Additional Paid-in Capital [Member]
Pioneer Southwest [Member]
Pioneer Southwest [Member]
Relating to Pioneer Southwest.
Net Income (loss) attributable to common stockholders
Sale of Pioneer Southwest common units, net of tax
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Sale of Interest by Parent
Issuance of Pioneer Southwest common units, net of tax
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance of Equity by Subsidiary to Noncontrolling Interests
Pioneer Southwest noncontrolling interest transferred to APIC
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
Deferred tax provision attributable to 2008 Pioneer Southwest initial public offering
Subsidiary or Equity Method Investee, Deferred Income Tax Provision on Gain (Loss) Recognized, Amount
Deferred tax benefit associated with the Pioneer Southwest merger
Adjustments to Additional Paid in Capital, Income Tax Benefit from Merger
Adjustments to Additional Paid in Capital, Income Tax Benefit from Merger
Pioneer Southwest merger transaction costs
Adjustments to Additional Paid in Capital, Other
Net transfers from noncontrolling interest
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net
Net income (loss) attributable to common stockholders and transfers from noncontrolling interest
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net
Issued Common Units
Limited Partners' Capital Account, Units Issued
Units Issued, Tax
Limited Partners' Capital Account, Units Issued, Tax
Limited Partners' Capital Account, Units Issued, Tax
Sale of Common Units
Partners' Capital Account, Units, Sale of Units
Sale of Units, Tax
Partners' Capital Account, Units, Sale of Units, Tax
Partners' Capital Account, Units, Sale of Units, Tax
Fair Value Disclosures - Nonrecurring [Abstract]
Fair Value Disclosures - Nonrecurring [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Long Lived Assets Held-for-sale by Asset Type [Axis]
Long Lived Assets Held-for-sale by Asset Type [Axis]
Long Lived Assets Held-for-sale, Name [Domain]
Long Lived Assets Held-for-sale, Name [Domain]
Impaired Long-Lived Assets Held and Used by Type [Axis]
Impaired Long-Lived Assets Held and Used by Type [Axis]
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]
South Texas Edwards And Austin Chalk [Member]
South Texas Edwards And Austin Chalk [Member]
SouthTexasEdwardsAndAustinChalkMember
Raton Field [Member]
Raton Field [Member]
Raton Field [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Asset Group
Fair Value of Asset Group
Fair Value of Asset Group
Management oil price outlook
Management oil price outlook
Management oil price outlook
Management gas price outlook
Management gas price outlook
Management gas price outlook
Fair Value of Assets Classified as Held for Sale [Abstract]
Fair Value of Assets Classified as Held for Sale [Abstract]
Sendero [Member]
Sendero [Member]
Sendero [Member]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Tangible Asset Impairment Charges
Tangible Asset Impairment Charges
Compensation and Employee Benefit Plans [Text Block]
Compensation and Employee Benefit Plans [Text Block]
Incentive Plans
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Fair Value Disclosures [Abstract]
discount rate used in impairment calculation
discount rate used in impairment calculation
discount rate used in impairment calculation
Impairment of Long-Lived Assets Held-for-use
Impairment of Long-Lived Assets Held-for-use
Inventory Write-down
Inventory Write-down
Schedule Of Related Party Transactions
Schedule of Related Party Transactions [Table Text Block]
Class of Stock [Domain]
Class of Stock [Domain]
Number of Units granted
Weighted Average Grant-Date Fair Value, Units granted
Weighted Average Grant Date Fair Value, Units vested
Performance percentage of actual payout minimum
Performance Percentage Of Actual Payout Minimum
Performance Percentage Of Actual Payout Minimum
Performance percentage to reach maximum
Performance percentage to reach maximum
Performance percentage to reach Maximum
Number of shares earned for each vested award
Number Of Shares Earned For Each Vested Award
Number Of Shares Earned For Each Vested Award
Common stock, shares issued
Common Stock, Shares, Issued
Other Expense [Abstract]
Other Expense [Abstract]
Schedule Of Components Of Other Expense
Schedule of Components of Other Expense Text Block
Schedule of Components of Other Expense Text Block
Schedule of Inventory [Table]
Schedule of Inventory [Table]
Schedule of Inventory [Table]
Inventory [Axis]
Inventory [Axis]
Inventory [Domain]
Inventory [Domain]
Inventory [Domain]
Schedule of Inventory [Line Items]
Schedule of Inventory [Line Items]
[Line Items] for Schedule of Inventory [Table]
Materials and supplies inventories
Inventory, Raw Materials and Supplies, Net of Reserves
Commodities
Energy Related Inventory, Crude Oil and Natural Gas Liquids
Inventory, Drilling, Noncurrent
Inventory, Drilling, Noncurrent
Inventories
Inventory, Net
Net materials and supplies inventories reserves
Inventory Valuation Reserves
Swap Contracts for Next Twelve Months [Member]
Swap Contracts for Next Twelve Months [Member]
Swap Contracts for Next Twelve Months [Member]
Swap Contracts for Year 2 [Member]
Swap Contracts for Year 2 [Member]
Swap Contracts for Year 2 [Member]
Swap Contracts for Year 3 [Member]
Swap Contracts for Year 3 [Member]
Swap Contracts for Year 3 [Member]
Collar Contracts for Year 2 [Member]
Collar Contracts for Year 2 [Member]
Collar Contracts for Year 2 [Member]
Collar Contracts for Year 3 [Member]
Collar Contracts for Year 3 [Member]
Collar Contracts for Year 3 [Member]
Collar Contracts With Short Puts for Year 2 [Member]
Collar Contracts With Short Puts for Year 2 [Member]
Collar Contracts With Short Puts for Year 2 [Member]
Collar Contracts With Short Puts for Year 3 [Member]
Collar Contracts With Short Puts for Year 3 [Member]
Collar Contracts With Short Puts for Year 3 [Member]
Basis Swap Contracts for Next Twelve Months [Member]
Basis Swap Contracts for Next Twelve Months [Member]
Basis Swap Contracts for Next Twelve Months
Basis Swap Contracts for Year 2 [Member]
Basis Swap Contracts for Year 2 [Member]
Basis Swap Contracts for Year 2
Basis Swap Contracts for Year 3 [Member]
Basis Swap Contracts for Year 3 [Member]
Basis Swap Contracts for Year 3 [Member]
Derivative [Line Items]
Derivative [Line Items]
Average Daily Gas Production Derivatives Volume per Day
Average Daily Gas Production Derivatives Volume per Day
Average Daily Gas Production Derivatives Volume per Day
Income Taxes
Income Tax Disclosure [Text Block]
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Related Party [Domain]
Related Party [Domain]
Right Of Way [Member]
Right Of Way [Member]
Right Of Way [Member]
Gathering And Treating Fees [Member]
Gathering And Treating Fees [Member]
Gathering And Treating Fees [Member]
EFS Midstream [Member]
Efs Midstream [Member]
EFS Midstream [Member]
Proceeds from Equity Method Investment, Dividends or Distributions
Proceeds from Equity Method Investment, Dividends or Distributions
Cost reimbursement fixed
Cost Reimbursement Fixed
Cost reimbursement fixed
Cost reimbursement variable
Cost Reimbursement Variable
Cost reimbursement variable
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment
Related party transaction expenses paid
Related Party Transaction, Expenses from Transactions with Related Party
Valuation Allowance [Table]
Valuation Allowance [Table]
Valuation Allowance by Deferred Tax Asset [Axis]
Valuation Allowance by Deferred Tax Asset [Axis]
Deferred Tax Asset [Domain]
Deferred Tax Asset [Domain]
Valuation Allowance [Line Items]
Valuation Allowance [Line Items]
Net operating loss carryforward
Asset retirement obligations
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Other
Deferred Tax Assets, Other
Total deferred tax assets
Deferred Tax Assets, Gross
Net deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Oil and gas properties, principally due to differences in basis, depletion and the deduction of intangible drilling costs for tax purposes
Deferred Tax Liabilities, Property, Plant and Equipment
Other property and equipment, principally due to the deduction of bonus depreciation for tax purposes
Deferred Tax Liabilities, Other Finite-Lived Assets
State taxes and other
Deferred Tax Liabilities, Other
Net deferred hedge gains
Deferred Tax Liabilities Hedge Gains Net
Deferred Tax Liabilities Hedge Gains Net
Total deferred tax liabilities
Deferred Tax Liabilities, Net
Net deferred tax liability
Deferred Tax Assets, Net
Deferred income taxes
Deferred Tax Assets, Net of Valuation Allowance, Current
Current deferred income tax asset
Current deferred income tax liability
Deferred Tax Liabilities, Net, Current
Non-current deferred income tax liability
Deferred Tax Liabilities, Net, Noncurrent
Valuation allowances
Commitments And Contingencies [Table]
Commitments And Contingencies [Table]
Commitments And Contingencies [Table]
Nature of Expense [Axis]
Nature of Expense [Axis]
Nature of Expense [Domain]
Nature of Expense [Domain]
nature of expense [Domain]
Lease Payments Discontinued Operations [Member]
Lease Payments Discontinued Operations [Member]
Lease Payments Discontinued operations [Member]
Commitments And Contingencies [Line Items]
Commitments And Contingencies [Line Items]
Commitments And Contingencies [Line Items]
Current annual salaries of officers and key employees
Officer And Key Employee Compensation
Expenditures for salaries of officers and key employees.
Lease payments associated with operating leases
Operating Leases, Rent Expense
Other income
Other Income
Equity interest in income (loss) of EFS Midstream
Income (Loss) from Equity Method Investments
Deferred compensation plan income
Deferred Compensation Plan Income
Deferred Compensation Plan Income
Interest income
Other Interest and Dividend Income
Third-party income from vertical integration services
Third-party income from vertical integration services
Third-party income from vertical integration services (b)
Total interest and other income
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
Principles Of Consolidation
Consolidation, Policy [Policy Text Block]
Use Of Estimates In The Preparation Of Financial Statements
Use of Estimates, Policy [Policy Text Block]
Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Accounts Receivable
Trade and Other Accounts Receivable, Policy [Policy Text Block]
Inventories
Inventory, Policy [Policy Text Block]
Oil And Gas Properties
Oil And Gas Properties [Policy Text Block]
Oil and gas properties policy text block
Goodwill
Goodwill and Intangible Assets Disclosure [Text Block]
Other Property And Equipment, Net
Other Property Plant And Equipment Net [Policy Text Block]
Other property plant and equipment net policy text block
Investment In Unconsolidated Affiliate
Investment In Unconsolidated Affiliate [Policy Text Block]
Investment In Unconsolidated Affiliate [Policy Text Block]
Asset Retirement Obligations
Asset Retirement Obligations, Policy [Policy Text Block]
Treasury Stock
Treasury Stock [Policy Text Block]
Treasury stock policy text block
Noncontrolling Interest In Consolidated Subsidiaries
Noncontrolling Interest Disclosure [Text Block]
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Derivatives And Hedging
Derivatives, Policy [Policy Text Block]
Environmental
Environmental Costs, Policy [Policy Text Block]
Stock-Based Compensation
Segment Reporting
Segment Reporting, Policy [Policy Text Block]
Assets Held for Sale and Discontinued Operations
Discontinued Operations, Policy [Policy Text Block]
New Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Statement of Stockholders' Equity [Abstract]
Common Stock [Member]
Common Stock [Member]
Treasury Stock [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interests [Member]
Noncontrolling Interest [Member]
Beginning Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Beginning Balance, shares
Shares, Outstanding
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues
Issuance of Common Stock
Stock Issued During Period, Value, New Issues
Dividends declared ($0.08 per share)
Dividends, Cash
Exercise of long-term incentive plan stock options and employee stock purchases, shares
Exercise of long-term incentive plan stock options and employee stock purchases
Stock Issued During Period, Value, Stock Options Exercised
Purchase of treasury stock, shares
Treasury Stock, Shares, Acquired
Purchase of treasury stock
Treasury Stock, Value, Acquired, Cost Method
Conversion of 2.875% senior convertible notes, shares
Stock Issued During Period, Shares, Conversion of Convertible Securities
Conversion of 2.875% senior convertible notes
Stock Issued During Period, Value, Conversion of Convertible Securities
Tax benefit related to conversion of 2.875% senior convertible notes
Adjustments to Additional Paid in Capital, Income Tax Benefit from Conversion of Convertible Notes
Adjustments to Additional Paid in Capital, Income Tax Benefit from Conversion of Convertible Notes
Tax benefits related to stock-based compensation
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Issuance of treasury stock to acquire outstanding PSE units, shares
Stock Issued During Period, Shares, Treasury Stock Reissued
Issuance of treasury stock to acquire outstanding PSE units
Stock Issued During Period, Value, Treasury Stock Reissued
Pioneer Southwest noncontrolling interest transferred to APIC
Disposition of subsidiary
Disposition Of Subsidiary
Equity Statement Disposition Of Subsidiary
Compensation costs:
Share-based Compensation [Abstract]
Vested compensation awards, net, shares
Stock Issued Or Vested During Period Shares Stock Awards
Number of common stock issued as a result of granting or vesting of employee stock awards (including income tax benefits), and the shares of treasury stock purchases related to withholding taxes.
Vested compensation awards, net
Stock Issued Or Vested During Period Value Stock Awards
Par value of share-based payments that vest or lapse during the period.
Compensation costs included in net income
Allocated Share-based Compensation Expense
Cash contributions from noncontrolling interests
Proceeds from Noncontrolling Interests
Cash distributions to noncontrolling interests
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Other comprehensive income (loss):
Deferred hedging activity, net of tax:
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Hedge fair value changes, net
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
Net hedge (gains) losses included in continuing operations
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax
Ending Balance
Ending Balance, shares
Reconciliation Of Earnings Attributable To Common Stockholders, Basic And Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding
Schedule of Weighted Average Number of Shares [Table Text Block]
Asset Class [Axis]
Asset Class [Axis]
Assets Held-for-sale [Member]
Assets Held-for-sale [Member]
Inventory [Member]
Inventory [Member]
Inventory [Member]
Transportation commitment charge
Transportation Commitment Loss
Transportation Commitment Loss
Other
Other General Expense
Above market drilling and rig termination costs
Idle And Terminated Rig Expense
Expenses from idle and terminate rigs.
Contingency and environmental accrual adjustments
Change In Accrual For Legal And Environmental Contingencies
Change in Accrual for Legal and Environmental Contingencies.
Terminated Drilling Rig Expense
Terminated Drilling Rig Expense
Terminated Drilling Rig Expense
Business Combination, Acquisition Related Costs
Business Combination, Acquisition Related Costs
Total other expense
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Schedule Of Compensation Expense For Each Type Of Incentive Award
Schedule Of Compensation Expense For Each Type Of Incentive Award [Table Text Block]
Schedule of compensation expense for each type of incentive award table text block
Number Of Shares Available Under The Company's Long Term Incentive Plan
Number Of Shares Available Under The Company's Long Term Incentive Plan [Table Text Block]
Number of shares available under the company's long term incentive plan table text block
Schedule Of Restricted Stock Award Activity
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
Schedule Of Weighted-Average Assumptions To Estimate The Fair Value
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Schedule Of Stock Options Awards Activity
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Schedule of Assumptions Used [Table Text Block]
Schedule of Assumptions Used [Table Text Block]
Schedule Of Performance Unit Activity
Schedule of Nonvested Performance-based Units Activity [Table Text Block]
Number Of Awards Available Under PSE Long Term Incentive Plan
Schedule Of Number Of Awards Available Under Company's Long Term Incentive Plan [Table Text Block]
Schedule of number of awards available under company's long term incentive plan table text block
Schedule Of PSE Restricted Stock Award Activity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]
Schedule Of Employee Stock Purchase Plan
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]
Statement of Cash Flows [Abstract]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Impairment of inventory and other property and equipment
Impairment of Inventory and Other Property and Equipment
Impairment of Inventory and Other Property and Equipment
Exploration expenses, including dry holes
Dry Hole Expense
The amount of noncash dry hole and unproved property abandonment expense during the period.
Deferred income taxes
(Gain) loss on disposition of assets, net
Gain (Loss) on Disposition of Assets for Financial Service Operations
Discontinued operations
Adjustment Income Loss From Discontinued Operations Net Of Tax
Aggregate non-cash (income) loss and investing and financing cash flows from a disposal group.
Interest expense
Paid-in-Kind Interest
Derivative related activity
Unrealized Gain Loss On Derivative Instruments
Aggregate net unrealized gain (loss) on commodity and interest rate
derivative instruments.
Amortization of stock-based compensation
Amortization Stock Based Compensation
Non-cash amortization of unvested stock-based compensation during the operating period.
Amortization of deferred revenue
Deferred Revenue Amortization
Deferred revenue recognized but not to be included in current operations cash flows.
Other noncash items
Other Noncash Income (Expense)
Change in operating assets and liabilities
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable, net
Increase (Decrease) in Accounts Receivable
Income taxes receivable
Increase (Decrease) in Income Taxes Receivable
Inventories
Increase (Decrease) in Inventories
Prepaid expenses
Increase (Decrease) in Prepaid Expense
Other current assets
Increase (Decrease) in Other Current Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Interest payable
Increase (Decrease) in Interest Payable, Net
Income taxes payable
Increase (Decrease) in Income Taxes Payable
Other current liabilities
Increase (Decrease) in Other Current Liabilities
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from disposition of assets, net of cash sold
Proceeds from Sale of Productive Assets
Payments for acquisitions, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Distribution from (investment in) unconsolidated subsidiary
Payments to Acquire Interest in Subsidiaries and Affiliates
Additions to oil and gas properties
Payments to Acquire Oil and Gas Property
Additions to other assets and other property and equipment, net
Payments to Acquire Other Productive Assets
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Borrowings under long-term debt
Proceeds from Issuance of Long-term Debt
Principal payments on long-term debt
Repayments of Long-term Debt
Proceeds from issuance of common stock, net of issuance
Proceeds from Issuance of Common Stock
Proceeds from issuance of partnership common units, net of issuance costs
Proceeds from Issuance of Common Limited Partners Units
Contributions from noncontrolling interests
Proceeds from Contributions from Affiliates
Distributions to noncontrolling interests
Payments of Distributions to Affiliates
Payments of other liabilities
Borrowings Payments of Other Liabilities
Borrowings and payments of other liabilities
Exercise of long-term incentive plan stock options and employee stock purchases
Proceeds from Stock Options Exercised
Purchase of treasury stock
Payments for Repurchase of Common Stock
Excess tax benefits from share-based payment arrangements
Excess Tax Benefit from Share-based Compensation, Financing Activities
Payment of financing fees
Payments of Financing Costs
Dividends paid
Payments of Dividends
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Net increase (decrease) in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents, beginning of period
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents, end of period
Accounting Changes and Error Corrections [Abstract]
Schedule of Revisions and Prior Period Adjustment Restatement [Table]
Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]
Adjustments for Revisions [Axis]
Adjustments for Error Corrections [Axis]
Adjustments for Revisions [Domain]
Adjustments for Error Correction [Domain]
Increase in Sales of Purchased Oil and Gas, Revision of Sales of Purchased Oil and Gas [Member]
Increase in Sales of Purchased Oil and Gas, Revision of Sales of Purchased Oil and Gas [Member]
Increase in Sales of Purchased Oil and Gas, Revision of Sales of Purchased Oil and Gas [Member]
Increase in Costs of Purchased Oil and Gas, Revisions of Purchased Oil and Gas [Member]
Increase in Costs of Purchased Oil and Gas, Revisions of Purchased Oil and Gas [Member]
Increase in Costs of Purchased Oil and Gas, Revisions of Purchased Oil and Gas [Member]
Increase in Other Expense, Revision of Purchased Oil and Gas [Member]
Increase in Other Expense, Revision of Purchased Oil and Gas [Member]
Increase in Other Expense, Revision of Purchased Oil and Gas [Member]
Restatement Adjustment [Member]
Restatement Adjustment [Member]
Scenario, Previously Reported [Member]
Scenario, Previously Reported [Member]
Revisions and Prior Period Adjustments Restatement [Line Items]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales of purchased oil and gas
Revenue from Purchased Oil and Gas
Quantifying Revision in Current Year Financial Statements, Revenue Amount
Quantifying Revision in Current Year Financial Statements, Revenue Amount
Quantifying Revision in Current Year Financial Statements, Revenue Amount
Quantifying Revision in Current Year Financial Statements, Expense Amount
Quantifying Revision in Current Year Financial Statements, Expense Amount
Quantifying Revision in Current Year Financial Statements, Expense Amount
Financial Information, Charges and Credits, Amount Reconciling to Previously Reported Results
Financial Information, Charges and Credits, Amount Reconciling to Previously Reported Results
Financial Information, Charges and Credits, Amount Reconciling to Previously Reported Results
Purchased oil and gas
Cost of Purchased Oil and Gas
Approved and authorized shares
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Shares issued
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Business Combinations [Abstract]
Acquisition and Divestitures [Text Block]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
U.S. federal
Current Federal Tax Expense (Benefit)
U.S. state
Current State and Local Tax Expense (Benefit)
Foreign
Current Foreign Tax Expense (Benefit)
Current income tax (provision) benefit
U.S. federal
Deferred Federal Income Tax Expense (Benefit)
U.S. state
Deferred State and Local Income Tax Expense (Benefit)
Deferred income tax (provision) benefit
Income tax (provision) benefit
Schedule of Other Ownership Interests [Table]
Schedule of Other Ownership Interests [Table]
Other Ownership Interests by Name [Axis]
Other Ownership Interests Name [Axis]
Other Ownership Interests, Name [Domain]
Other Ownership Interests, Name [Domain]
Limited Partner Interest [Member]
Limited Partner Interest [Member]
Limited Partner Interest [Member]
General Partner Interest [Member]
General Partner Interest [Member]
General Partner Interest [Member]
Wolfcamp [Member]
Wolfcamp [Member]
Wolfcamp [Member]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable - trade
Accounts Receivable, Net, Current
Allowances for doubtful accounts
Allowance for Doubtful Accounts, Premiums and Other Receivables
Natural gas processing plants number
Natural Gas Processing Plants Number
Natural Gas Processing Plants Number
Treating facilities number
Treating Facilities Number
Treating facilities number
Operational natural gas processing plants
Natural Gas Processing Plants Operated Number
Natural gas processing plants operated number.
Operational treating facilities
Treating Facilities Operated Number
Treating facilities operated number.
Third party revenues, processing plants and treating facilities
Gas Gathering, Transportation, Marketing and Processing Revenue
Third party expenses, processing plants and treating facilities
Gas Gathering, Transportation, Marketing and Processing Costs
Goodwill, Written off Related to Sale of Business Unit
Goodwill, Written off Related to Sale of Business Unit
Joint Venture Investment Ownership Percentage
Joint Venture Investment Ownership Percentage
Investment in Joint Venture
Percentage of interest sold
Minority Interest Ownership, Percentage Sold
Minority Interest Ownership, Percentage Sold
Proceeds from sale of interest in EFS Midstream
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates
Deferred gain on sale of EFS midstream
Gain On Sale Not Qualifying As Gain As Of Balance Sheet Date
Amount of gain on the sale of an equity interest that does not qualify for gain recognition as of the balance sheet date.
EFS midstream deferred gain amortization period, years
Deferred Gain Amortization Period
Deferred gain amortization period
Partnerships interest
Noncontrolling Interest, Ownership Percentage by Parent
Share Per Unit Exchange Ratio
Share Per Unit Exchange Ratio
Shares of stock to be exchanged for each unit
Noncontrolling interest in consolidating subsidiaries
Stockholders' Equity Attributable to Noncontrolling Interest
Net income attributable to noncontrolling interests
Deferred Revenue, Revenue Recognized
Deferred Revenue, Revenue Recognized
Basis points added to variable interest rate
Derivative, Basis Points
Derivative, Basis Points
Schedule of Derivative Assets and Liabilities by Counterparty [Table]
Schedule of Derivative Assets and Liabilities by Counterparty [Table]
Schedule of Derivative Assets and Liabilities by Counterparty [Table]
JP Morgan Chase [Member]
Jp Morgan Chase [Member]
JP Morgan Chase [Member]
Morgan Stanley [Member]
Morgan Stanley [Member]
Morgan Stanley [Member]
Merrill Lynch [Member]
Merrill Lynch [Member]
Merrill Lynch [Member]
Barclays Capital [Member]
Barclays Capital [Member]
Barclays Capital [Member]
Den Norske Bank [Member]
Den Norske Bank [Member]
Den Norske Bank [Member]
Societe Generale [Member]
Societe Generale [Member]
Societe Generale [Member]
Macquarie Bank [Member]
Macquarie Bank [Member]
Macquarie Bank [Member]
J. Aron & Company [Member]
J. Aron & Company [Member]
J. Aron & Company [Member]
Wells Fargo Bank, N.A. [Member]
Wells Fargo Bank N [Member]
Wells Fargo Bank, N.A. [Member]
Citibank N [Member]
Citibank N [Member]
Citibank, N.A. [Member]
Deutsche Bank [Member]
Deutsche Bank [Member]
Deutsche Bank [Member]
BMO Financial Group [Member]
BMO Financial Group [Member]
BMO Financial Group [Member]
Credit Suisse [Member]
Credit Suisse [Member]
Credit Suisse [Member]
BP Corporation North America [Member]
BP Corporation North America [Member]
BP Corporation North America [Member]
Royal Bank of Canada [Member]
Royal Bank of Canada [Member]
Royal Bank of Canada [Member]
BNP Paribas [Member]
BNP Paribas [Member]
BNP Paribas [Member]
Toronto Dominion [Member]
Toronto Dominion [Member]
Toronto Dominion [Member]
Mitsubishi UFJ Financial Group [Member]
Mitsubishi UFJ Financial Group [Member]
Mitsubishi UFJ Financial Group [Member]
Credit Agricole [Member]
Credit Agricole [Member]
Credit Agricole [Member]
Schedule of Derivative Assets and Liabilities by Counterparty [Line Items]
Schedule of Derivative Assets and Liabilities by Counterparty [Line Items]
Schedule of Derivative Assets and Liabilities by Counterparty [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net
Derivative Assets (Liabilities), at Fair Value, Net
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Maximum [Member]
Maximum [Member]
Minimum [Member]
Minimum [Member]
Range of volatilities
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate
Interest Rate Derivatives [Member]
Interest Rate Contract [Member]
Commodity Price Derivatives [Member]
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) by Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement and Other Comprehensive Income Location [Domain]
Income Statement Location [Domain]
Interest Expense [Member]
Interest Expense [Member]
Oil And Gas revenue [Member]
Oil And Gas Revenue [Member]
Oil and gas revenue
Derivative Gains (Losses), Net [Member]
Derivative Gains Losses [Member]
Derivative gains (losses) [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax
Amount of Gain (Loss) Recognized in Earnings on Derivatives
Loss on Derivative Instruments, Pretax
Aging of Capitalized Exploratory Well Costs [Axis]
Aging of Capitalized Exploratory Well Costs [Axis]
Nuna [Member]
Nuna [Member]
Nuna [Member]
Oooguruk [Member]
Oooguruk [Member]
Oooguruk [Member]
One year or less
Capitalized Exploratory Well Costs that Have Been Capitalized for Period of One Year or Less
More than one year
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year
Capitalized exploratory well costs, total suspended
Number of projects with exploratory well costs that have been suspended 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
Capitalized Exploratory Well Cost, Charged to Expense
Summary Of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Property, Plant and Equipment by Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Proved and Unproved Sand Leaseholds [Member]
Proved and Unproved Sand Leaseholds [Member]
Proved and Unproved Sand Leaseholds [Member]
Wells and Related Equipment and Facilities [Member]
Wells and Related Equipment and Facilities [Member]
Land and Building [Member]
Land and Building [Member]
Transportation Equipment [Member]
Transportation Equipment [Member]
Furniture and Fixtures [Member]
Furniture and Fixtures [Member]
Leasehold Improvements [Member]
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross
Accumulated depreciation property, plant and equipment, other assets
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Drilling rigs owned
Drilling rigs owned
Drilling rigs owned.
Fracture Stimulation Fleets
Fracture Stimulation Fleets
Fracture Stimulation Fleets Owned
Assets Held-for-sale, Property, Plant and Equipment
Assets Held-for-sale, Property, Plant and Equipment
Document And Entity Information [Abstract]
Document and Entity Information [Abstract]
Document Information [Table]
Document Information [Table]
Document Information, Document [Axis]
Document Information, Document [Axis]
Document [Domain]
Document [Domain]
Document Information [Line Items]
Document Information [Line Items]
Entity Registrant Name
Entity Registrant Name
Trading Symbol
Trading Symbol
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Document Type
Document Type
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Amendment Flag
Amendment Flag
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Voluntary Filers
Entity Current Reporting Status
Entity Current Reporting Status
Entity Public Float
Entity Public Float
Disclosures About Fair Value Measurements
Fair Value Disclosures [Text Block]
Pioneer Southwest Employee Long Term Incentive Plan [Member]
Pioneer Southwest Employee Long Term Incentive Plan [Member]
Pioneer Southwest Employee Long Term Incentive Plan [Member]
Awards available for future grant
Assets And Liabilities That Are Measured At Fair Value On A Recurring Basis
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Fair Value Measurements, Nonrecurring [Table Text Block]
Fair Value Measurements, Nonrecurring [Table Text Block]
Fair Value of Assets Classified as Held for Sale [Table Text Block]
Fair Value of Assets Classified as Held for Sale [Table Text Block]
Fair Value of Assets Classified as Held for Sale [Table Text Block]
Fair Value Measurements Not Carried At Fair Value
Fair Value, by Balance Sheet Grouping [Table Text Block]
Income Statement [Abstract]
Revenues and other income:
Revenues [Abstract]
Interest and other
Derivative gains, net
Gain (Loss) on Derivative Instruments, Net, Pretax
Gain (Loss) on disposition of assets, net
Revenues and other income
Total revenues and other income
Total revenues and income from equity affiliates and other income.
Costs and expenses:
Costs and Expenses [Abstract]
Production and ad valorem taxes
Exploration and abandonments
Other
Income (loss) from continuing operations before income taxes
Income tax benefit (provision)
Income (loss) from continuing operations
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest
Income (loss) from discontinued operations, net of tax
Net income (loss)
Net income (loss) attributable to common stockholders
Basic earnings per share:
Earnings Per Share, Basic [Abstract]
Income (loss) from continuing operations attributable to common stockholders
Income (Loss) from Continuing Operations, Per Basic Share
Income (loss) from discontinued operations attributable to common stockholders
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Net income (loss) attributable to common stockholders
Earnings Per Share, Basic
Diluted earnings per share:
Earnings Per Share, Diluted [Abstract]
Income (loss) from continuing operations attributable to common stockholders
Income (Loss) from Continuing Operations, Per Diluted Share
Income (loss) from discontinued operations attributable to common stockholders
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Net income (loss) attributable to common stockholders
Earnings Per Share, Diluted
Weighted average shares outstanding:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic
Weighted Average Number of Shares Outstanding, Basic
Diluted
Weighted Average Number of Shares Outstanding, Diluted
Amounts attributable to common stockholders:
Income Amounts Attributable to Parent, Disclosures [Abstract]
Income (loss) from discontinued operations, net of tax
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Net income (loss)
Statement of Financial Position [Abstract]
Class of Stock [Axis]
Class of Stock [Axis]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
ASSETS
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Accounts receivable:
Accounts Receivable, Net, Current [Abstract]
Trade, net
Due from affiliates
Due from Affiliate, Current
Income taxes receivable
Income Taxes Receivable, Current
Prepaid expenses
Prepaid Expense, Current
Assets held for sale
Assets of Disposal Group, Including Discontinued Operation
Other current assets:
Other Assets, Current [Abstract]
Other Assets, Current [Abstract]
Derivatives
Derivative Asset, Current
Other
Other Assets, Current
Total current assets
Assets, Current
Property, plant and equipment, at cost:
Property, Plant and Equipment, Net [Abstract]
Oil and gas properties, using the successful efforts method of accounting:
Oil and Gas Property, Successful Effort Method, Net [Abstract]
Proved properties
Proved Oil and Gas Property, Successful Effort Method
Unproved properties
Unproved Oil and Gas Property, Successful Effort Method
Accumulated depletion, depreciation and amortization
Oil and Gas Property, Successful Effort Method, Accumulated Depreciation, Depletion and Amortization
Total property, plant and equipment
Oil and Gas Property, Successful Effort Method, Net
Goodwill
Goodwill
Other property and equipment, net
Property, Plant and Equipment, Other, Gross
Other assets:
Other Assets, Noncurrent [Abstract]
Investment in unconsolidated affiliate
Equity Method Investments
Derivatives
Derivative Asset, Noncurrent
Other, net
Other Assets, Noncurrent
Assets, Total
Assets
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Accounts payable:
Accounts Payable, Current [Abstract]
Trade
Accounts Payable, Trade, Current
Due to affiliates
Due to Affiliate, Current
Interest payable
Interest Payable, Current
Income taxes payable
Accrued Income Taxes, Current
Deferred income taxes
Liabilities held for sale
Liabilities of Disposal Group, Including Discontinued Operation
Other current liabilities:
Other Liabilities, Current [Abstract]
Derivatives
Derivative Liability, Current
Deferred revenue
Deferred Revenue, Current
Other
Other Liabilities, Current
Total current liabilities
Liabilities, Current
Long-term debt
Long-term Debt, Excluding Current Maturities
Derivatives
Derivative Liability, Noncurrent
Deferred income taxes
Other liabilities
Other Liabilities, Noncurrent
Stockholders' equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $.01 par value
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital
Treasury stock, at cost
Treasury Stock, Value
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive income (loss) - net deferred hedge gains (losses), net of tax
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax
Total stockholders' equity attributable to common stockholders
Stockholders' Equity Attributable to Parent
Total stockholders' equity
Commitments and contingencies
Commitments and Contingencies
Liabilities and Stockholders' Equity, Total
Liabilities and Equity
Debt Disclosure [Abstract]
Fair Value by Liability Class [Axis]
Liability Class [Axis]
Fair Value, Liabilities, Measured on Recurring Basis, Unobservable Input Reconciliation, by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Derivative Obligations [Member]
Derivative Obligations [Member]
Derivative Obligations
Cash payments for interest
Interest Paid
Accretion/amortization of discounts or premiums on loans
Amortization of Debt Discount (Premium)
Accretion of discount on derivative obligations
Accretion Expense
Amortization of net deferred hedge losses (see Note I)
Amortization Of Deferred Gain Loss On Discontinuation Of Fair Value Hedge
Amortization Of Deferred Gain Loss In Discontinuation Of Fair Value Hedge.
Accretion of discount on postretirement benefit obligations
Accretion Of Discount On Postretirement Benefit Obligations
Accretion Of Discount On Postretirement Benefit Obligations
Amortization of capitalized loan fees
Amortization of Financing Costs and Discounts
Net changes in accruals
Debt Instrument, Increase, Accrued Interest
Interest incurred
Interest Costs Incurred
Less capitalized interest
Interest Costs Capitalized
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Related Party [Axis]
Related Party [Axis]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Receipt of lease operating and supervision charges in accordance with standard industry operating agreements
Revenue from Related Parties
Reimbursement of general and administrative expenses
Reimbursement of General and Administrative Expenses
Reimbursement of General and Administrative Expenses
Subsequent Events [Abstract]
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred
Business Combination, Consideration Transferred
Proceeds from Divestiture of Interest in Consolidated Subsidiaries
Proceeds from Divestiture of Interest in Consolidated Subsidiaries
PSE Ltip Phantom Units [Member]
PSE Ltip Phantom Units [Member]
PSE Ltip Phantom Units [Member]
Number of Units Lapse of restrictions
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Lapsed Restrictions in Period
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Lapsed Restrictions in Period
Weighted Average Grant Date Fair Value Lapse of restrictions
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Option Lapse Of Restrictions in Period Weighted Average Grant Date Fair Value
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Option Lapse Of Restrictions in Period Weighted Average Grant Date Fair Value
Asset Retirement Obligation [Abstract]
Asset Retirement Obligations
Asset Retirement Obligation Disclosure [Text Block]
Reconciliation of Basic Weighted Average Shares to Diluted Weighted Average Shares [Table]
Reconciliation of Basic Weighted Average Shares to Diluted Weighted Average Shares [Table]
Reconciliation of Basic Weighted Average Shares to Diluted Weighted Average Shares [Table]
Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Unvested Performance units [Member]
Unvested Performance units [Member]
Unvested Performance units [Member]
Conversion rights [Member]
Conversion rights [Member]
Conversion rights [Member]
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]
Weighted Average Number of Shares Outstanding Reconciliation [Line Items]
Dilutive common stock options
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants
Contingently issuable - performance shares
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares
Convertible notes dilution
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
Diluted
Antidilutive securities excluded from computation of earnings per share, amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
5.875% Senior Notes Due 2016 [Member]
Five Point Eight Seven Five Percent Senior Notes Due Two Thousand Sixteen [Member]
Five Point Eight Seven Five Percent Senior Notes Due Two Thousand Sixteen [Member]
6.65% Senior Notes Due 2017 [Member]
Six Point Six Five Percent Senior Notes Due Two Thousand Seventeen [Member]
Six Point Six Five Percent Senior Notes Due Two Thousand Seventeen [Member]
6.875% Senior Notes Due 2018 [Member]
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Eighteen [Member]
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Eighteen [Member]
7.500% Senior Notes Due 2020 [Member]
Seven Point Five Zero Zero Percentage Senior Notes Due Two Thousand And Twenty [Member]
Seven Point Five Zero Zero Percentage Senior Notes Due Two Thousand and Twenty [Member]
3.95% Senior Notes Due 2022 [Member]
3.95% Senior Notes Due 2022 [Member]
3.95% Senior Notes Due 2022 [Member]
7.20% Senior Notes Due 2028 [Member]
Seven Point Two Zero Percent Senior Notes Due Two Thousand Twenty Eight [Member]
Seven Point Two Zero Percent Senior Notes Due Two Thousand Twenty Eight [Member]
2.875% Convertible Senior Notes Due 2038 [Member]
Two Point Eight Seven Five Percent Senior Convertible Notes Due Two Thousand Thirty Eight [Member]
Two Point Eight Seven Five Percent Senior Convertible Notes Due Two Thousand Thirty Eight [Member]
Pioneer Credit Facility [Member]
Pioneer Credit Facility [Member]
Pioneer Credit Facility [Member]
Pioneer Southwest Credit Facility [Member]
Pioneer Southwest Credit Facility [Member]
Pioneer Southwest Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Outstanding borrowing
Line of Credit Facility, Amount Outstanding
Issuance of senior notes
Senior Notes
Convertible debt
Convertible Debt
Outstanding debt principal balances, gross
Long-term Debt, Gross
Issuance discounts and premiums, net
Debt Instrument, Unamortized Discount (Premium), Net
Net deferred fair value hedge losses
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge
Senior notes, interest rate
Debt Instrument, Interest Rate, Stated Percentage
Interest And Other Income
Interest and Other Income [Table Text Block]
Discontinued Operations Balance Sheet Held For Sale [Abstract]
Discontinued Operations Balance Sheet Held For Sale [Abstract]
Assets of Disposal Group, Including Discontinued Operation, Current
Assets of Disposal Group, Including Discontinued Operation, Current
Disposal Group, Including Discontinued Operation, Deferred Tax Assets
Disposal Group, Including Discontinued Operation, Deferred Tax Assets
Disposal Group, Including Discontinued Operation, Other Assets
Disposal Group, Including Discontinued Operation, Other Assets
Liabilities of Disposal Group, Including Discontinued Operation, Current
Liabilities of Disposal Group, Including Discontinued Operation, Current
Disposal Group, Including Discontinued Operation, Other Liabilities
Disposal Group, Including Discontinued Operation, Other Liabilities
Components Of Long-Term Debt