Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies
Commitments and Contingencies Disclosure [Text Block]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of oil derivative contracts volume and weighted average price
Schedule of Oil Derivative Contracts volume and weighted average price [Table Text Block]
Schedule of Oil Derivative Contracts Volume and Weighted Average Price [Text Block]
Schedule of NGL derivative volumes and weighted average prices
Schedule of NGL Derivative Volumes and Weighted Average Prices [Table Text Block]
Schedule of NGL Derivative Volumes and Weighted Average Prices [Table Text Block]
Schedule of gas derivative volume and weighted average prices
Schedule Of Gas Volume And Weighted Average Prices [Table Text Block]
Schedule Of Gas Volume And Weighted Average Prices [Table Text Block]
Offsetting Asset and Liability
Offsetting Asset and Liability [Table Text Block]
Offsetting Asset and Liability [Table Text Block]
Schedule of derivative gains and losses recognized on statement of operations
Schedule of Derivative Gains and Losses Recognized on Statement of Operations [Table Text Block]
Schedule of Derivative Gains and Losses Recognized on Statement of Operations [Text Block]
NonRecurring Fair Value Disclosures [Abstract]
NonRecurring Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Operating Activities [Axis]
Operating Activities [Axis]
Operating Activities [Domain]
Operating Activities [Domain]
Discontinued Operations [Member]
Discontinued Operations [Member]
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]
Hugoton field [Member]
Hugoton field [Member]
Hugoton field [Member]
Pioneer Alaska [Member]
Pioneer Alaska [Member]
Pioneer Alaska [Member]
Barnett Shale Field [Member]
Barnett Shale Field [Member]
Barnett Shale Field [Member]
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]
West Panhandle [Member]
West Panhandle [Member]
West Panhandle [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]
Inventory Write-down
Inventory Write-down
Fair Value of Asset Group
Fair Value of Asset Group
Fair Value of Asset Group
Impairment of oil and gas properties
Impairment of Oil and Gas Properties
Management oil price outlook
Management oil price outlook
Management oil price outlook
Management gas price outlook
Management gas price outlook
Management gas price outlook
Acquisitions and Divestitures [Abstract]
Acquisitions and Divestitures [Abstract]
Acquisition and Divestitures
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs [Table]
Schedule of Restructuring and Related Costs [Table]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Cash [Member]
Cash [Member]
Deferred Compensation, Share-based Payments [Member]
Deferred Compensation, Share-based Payments [Member]
Leasehold Improvements [Member]
Leasehold Improvements [Member]
Property Subject to Operating Lease [Member]
Property Subject to Operating Lease [Member]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Restructuring Type [Axis]
Restructuring Type [Axis]
Type of Restructuring [Domain]
Type of Restructuring [Domain]
Employee Severance [Member]
Employee Severance [Member]
Contract Termination [Member]
Contract Termination [Member]
Employee Relocation [Member]
Employee Relocation [Member]
Restructuring Plan [Axis]
Restructuring Plan [Axis]
Restructuring Plan [Domain]
Restructuring Plan [Domain]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Other Comprehensive Income Location [Axis]
Other Comprehensive Income Location [Axis]
Other Comprehensive Income Location [Domain]
Other Comprehensive Income Location [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges
Restructuring and Related Cost, Incurred Cost
Restructuring and Related Cost, Expected Cost Remaining
Restructuring and Related Cost, Expected Cost Remaining
Restructuring and Related Cost, Expected Cost
Restructuring and Related Cost, Expected Cost
Restructuring Reserve
Restructuring Reserve
Derivative [Table]
Derivative [Table]
Asset Area [Axis]
Asset Area [Axis]
Asset Area [Axis]
Asset Area [Domain]
Asset Area [Domain]
[Domain] for Asset Area [Axis]
Gulf Coast [Member]
Gulf Coast [Member]
Gulf Coast [Member]
Mid-Continent [Member]
Mid-Continent [Member]
Mid-Continent [Member]
Permian Basin [Member]
Permian Basin [Member]
Permian Basin [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event [Member]
Subsequent Event [Member]
Trading Activity [Axis]
Trading Activity [Axis]
Trading Activity, by Type [Domain]
Trading Activity, by Type [Domain]
Collar Contracts With Short Puts for Current Year [Member]
Collar Contracts With Short Puts for Current Year [Member]
Collar Contracts With Short Puts for Current Year [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]
Swap Contracts for Current Year [Member]
Swap Contracts for Current Year [Member]
Swap Contracts for Current Year [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]
Basis Swap Contracts for Current Year [Member]
Basis Swap Contracts for Current Year [Member]
Basis Swap Contracts for Current Year
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]
So Cal Basis Swap Contracts for Current Year [Member]
So Cal Basis Swap Contracts for Current Year [Member]
So Cal Basis Swap Contracts for Current Year [Member]
So Cal Basis Swap Contracts for Year 2 [Member]
So Cal Basis Swap Contracts for Year 2 [Member]
So Cal Basis Swap Contracts for Year 2 [Member]
So Cal Basis Swap Contracts for Year 3 [Member]
So Cal Basis Swap Contracts for Year 3 [Member]
So Cal Basis Swap Contracts for Year 3 [Member]
Derivative Instrument Risk [Axis]
Derivative Instrument [Axis]
Derivative Contract Type [Domain]
Derivative Contract [Domain]
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]
Derivative, by Nature [Axis]
Derivative, by Nature [Axis]
Derivative, Name [Domain]
Derivative, Name [Domain]
Short Put [Member]
Short Put [Member]
Short Put [Member]
Derivative [Line Items]
Derivative [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.
Asset Retirement Obligation [Abstract]
Asset Retirement Obligations
Asset Retirement Obligation Disclosure [Text Block]
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Incentive Plans
Compensation and Employee Benefit Plans [Text Block]
Statement of Cash Flows [Abstract]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depletion, depreciation and amortization
Depreciation, Depletion and Amortization
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
Deferred Income Tax Expense (Benefit)
Gain on disposition of assets, net
Gain (Loss) on Disposition of Property Plant Equipment
Accretion of discount on asset retirement obligations
Asset Retirement Obligation, Accretion Expense
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
Amortization of Financing Costs and Discounts
Derivative related activity
Noncash Gain Loss On Derivative Instruments
Aggregate net noncash 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.
Other
Other Operating Activities, Cash Flow Statement
Change in operating assets and liabilities, net of effects from acquisitions and dispositions:
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
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 costs
Proceeds from Issuance of Common Stock
Distributions to noncontrolling interests
Payments of Distributions to Affiliates
Borrowings (payments) of other liabilities
Borrowings Payments of Other Liabilities
Borrowings and payments of other liabilities
Exercise of long-term incentive plan stock options
Proceeds from Stock Options Exercised
Purchases of treasury stock
Payments for Repurchase of Common Stock
Tax benefits related to stock-based compensation
Excess Tax Benefit from Share-based Compensation, Financing Activities
Payments of financing fees
Payments of Financing Costs
Dividends paid
Payments of Dividends
Net cash used in 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
Acquisitions and Divestitures [Table]
Gain (loss) on sale of assets [Table]
Gain (loss) on sale of assets [Table]
Sendero [Member]
Sendero [Member]
Sendero [Member]
Lease Contract through Year 2 [Member]
Lease Contract through Year 2 [Member]
Lease Contract through Year 2 [Member]
Lease Contract for Year 3 [Member]
Lease Contract for Year 3 [Member]
Lease Contract for Year 3 [Member]
Other Ownership Interests 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]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Efs Midstream [Member]
Efs Midstream [Member]
EFS Midstream [Member]
Wolfcamp [Member]
Wolfcamp [Member]
Wolfcamp [Member]
Gaines Dawson [Member]
Gaines Dawson [Member]
Gaines Dawson [Member]
Eagle Ford Shale [Member]
Eagle Ford Shale [Member]
Eagle Ford Shale [Member]
Acquisitions and Divestitures [Line Items]
Gain Loss on Sale of Assets [Line Items]
Gain Loss on Sale of Assets [Line Items]
Gain (loss) on disposition of assets, net
Proceeds from Divestiture of Interest in Consolidated Subsidiaries
Proceeds from Divestiture of Interest in Consolidated Subsidiaries
Drilling rigs leased
Drilling rigs leased
Drilling rigs leased
Idle Rig Expense
Idle Rig Expense
Expenses from idle and terminate rigs.
Proceeds from Sale of Productive Assets
Goodwill, Written off Related to Sale of Business Unit
Goodwill, Written off Related to Sale of Business Unit
Significant Acquisition and Disposal, Acquisition Costs or Sales Proceeds
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds
Maximum Payments From Related Party For Exploration Drilling And Completion Costs
Maximum Payments From Related Party For Exploration Drilling And Completion Costs
Maximum Payments From Related Party For Exploration Drilling And Completion Costs
Payments From Related Party For Exploration Drilling And Completion Costs Percent
Payments From Related Party For Exploration Drilling And Completion Costs Percent
Payments From Related Party For Exploration Drilling And Completion Costs Percent
Maximum Distribution Made to Limited Partner, Distributions Declared, Per Unit
Maximum Distribution Made to Limited Partner, Distributions Declared, Per Unit
Maximum Distribution Made to Limited Partner, Distributions Declared, Per Unit
Joint Venture Investment Ownership Percentage
Joint Venture Investment Ownership Percentage
Investment in Joint Venture
Earnings Per Share [Abstract]
Net Income Per Share
Earnings Per Share [Text Block]
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
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]
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
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
Taxes, Miscellaneous
Exploration and abandonment
Exploration Abandonment and Impairment Expense
General and administrative
General and Administrative Expense
Asset Retirement Obligation, Accretion Expense
Other Nonoperating Expense
Other Nonoperating Expense
Costs and Expenses
Costs and Expenses
Loss from discontinued operations before income taxes
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Current tax provision
Current Income Tax Expense (Benefit)
Deferred tax benefit
Income (Loss) from Discontinued Operations, Net of Tax
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Debt Disclosure [Abstract]
Long-Term Debt
Long-term Debt [Text Block]
Schedule of Share Based Incentive Award Activity
Schedue of Share Based Incentive Award Activity [Table Text Block]
Schedue of Share Based Incentive Award Activity [Table 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 [Axis]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Performance Shares [Member]
Performance Shares [Member]
Stock Options [Member]
Employee Stock Option [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]
Basic and diluted weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic
Convertible senior notes dilution
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
Diluted
Weighted Average Number of Shares Outstanding, Diluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Income Statement [Abstract]
Statement [Table]
Statement [Table]
Statement [Line Items]
Statement [Line Items]
Revenues and other income:
Revenues [Abstract]
Sales of purchased oil and gas
Revenue from Purchased Oil and Gas
Derivative gains (losses), net
Gain (Loss) on Derivative Instruments, Net, Pretax
Total revenues and other income
Revenues
Costs and expenses:
Costs and Expenses [Abstract]
Production and ad valorem taxes
Purchased oil and gas
Cost of Purchased Oil and Gas
Exploration and abandonments
Interest
Interest Expense
Other
Costs and Expenses
Income (loss) from continuing operations before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Income tax benefit (provision)
Income Tax Expense (Benefit)
Income (loss) from continuing operations
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest
Loss from discontinued operations, net of tax
Net income (loss)
Net income attributable to noncontrolling interests
Net Income (Loss) Attributable to Noncontrolling Interest
Net income (loss) attributable to common stockholders
Net Income (Loss) Attributable to Parent
Basic earnings per share:
Earnings Per Share, Basic [Abstract]
Income (loss) from continuing operations
Income (Loss) from Continuing Operations, Per Basic Share
Loss from discontinued operations
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Net income (loss)
Earnings Per Share, Basic
Diluted earnings per share:
Earnings Per Share, Diluted [Abstract]
Income (loss) from continuing operations
Income (Loss) from Continuing Operations, Per Diluted Share
Loss from discontinued operations
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Net income (loss)
Earnings Per Share, Diluted
Weighted average shares outstanding:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Diluted
Dividends declared per share
Common Stock, Dividends, Per Share, Declared
Amounts attributable to common stockholders:
Income Amounts Attributable to Parent, Disclosures [Abstract]
Income (loss) from continuing operations
Income (Loss) from Continuing Operations Attributable to Parent
Loss from discontinued operations, net of tax
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Fair Value Disclosures [Abstract]
Interest Rate Derivatives [Member]
Interest Rate Contract [Member]
Commodity Derivatives [Member]
Commodity [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Inputs, Level 1 [Member]
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Trading Securities, Fair Value Disclosure
Trading Securities
Derivative Asset, Fair Value, Net
Derivative Asset, Fair Value, Amount Not Offset Against Collateral
Deferred Compensation Plan Assets
Deferred Compensation Plan Assets
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure
Derivative Liability, Fair Value, Net
Derivative Liability, Fair Value, Amount Not Offset Against Collateral
Liabilities, Fair Value Disclosure
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Recurring Measurements, (Fair Value, Total)
Recurring Measurements, (Fair Value, Net)
Recurring Measurements, (Fair Value, Net).
Schedule of assets and liabilities measured at fair value on a recurring basis
Fair Value, Assets Measured on Recurring Basis [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]
Schedule of carrying values and financial instruments not carried at fair value
Fair Value, by Balance Sheet Grouping [Table Text Block]
Hedging Designation [Axis]
Hedging Designation [Axis]
Hedging Designation [Domain]
Hedging Designation [Domain]
Not Designated as Hedging Instrument [Member]
Not Designated as Hedging Instrument [Member]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Derivatives - Current [Member]
Derivative Current [Member]
Derivative Current [Member]
Commodity Price Derivatives [Member]
Commodity Contract [Member]
Derivative Gains (Losses), Net [Member]
Derivative Gains Losses [Member]
Derivative gains (losses) [Member]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Subsequent Events [Abstract]
Subsequent Event [Table]
Subsequent Event [Table]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Proceeds Received Current Year [Member]
Proceeds Received Current Year [Member]
Proceeds Received Current Year [Member]
Scenario, Forecast [Member]
Scenario, Forecast [Member]
Proceeds To Be Received In Future Year [Member] [Member]
Proceeds To Be Received In Future Year [Member] [Member]
Proceeds To Be Received In Future Year [Member]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Pioneer Southwest [Member]
Pioneer Southwest [Member]
Relating to Pioneer Southwest.
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage
Equity Method Investment, Ownership Percentage
Equity Method Investment, Net Sales Proceeds
Equity Method Investment, Net Sales Proceeds
Equity Method Investment, Realized Gain (Loss) on Disposal
Equity Method Investment, Realized Gain (Loss) on Disposal
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]
Exploratory Cost Disclosure [Abstract]
-- None. No documentation exists for this element. --
Projects with Exploratory Well Costs Capitalized for More than One Year [Table]
Projects with Exploratory Well Costs Capitalized for More than One Year [Table]
Project [Axis]
Project [Axis]
Project [Domain]
Project [Domain]
Colorado [Member]
Colorado [Member]
Colorado [Member]
Nuna [Member]
Nuna [Member]
Nuna [Member]
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year
Number of projects with exploratory 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
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Measurement Basis [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Reported Value Measurement [Member]
Reported Value Measurement [Member]
Estimate of Fair Value Measurement [Member]
Estimate of Fair Value Measurement [Member]
Long-term Debt, Excluding Current Maturities
Long-term Debt, Excluding Current Maturities
Statement of Stockholders' Equity [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stock [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Noncontrolling Interests [Member]
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, shares
Shares, Outstanding
Beginning Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Value, New Issues
Stock Issued During Period, Value, New Issues
Dividends declared ($0.04 per share)
Dividends, Cash
Exercise of long-term incentive plan stock options and employee stock purchases, shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Exercise of long-term incentive plan stock options and employee stock purchases
Stock Issued During Period, Value, Stock Options Exercised
Treasury stock purchases, shares
Treasury Stock, Shares, Acquired
Treasury stock purchases
Treasury Stock, Value, Acquired, Cost Method
Stock Issued During Period, Shares, Conversion of Convertible Securities
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
Sendero divestiture
Noncontrolling Interest, Decrease from Deconsolidation
Tax benefit related to stock-based compensation
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Pioneer Southwest merger transaction costs
Adjustments to Additional Paid in Capital, Other
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 distributions to noncontrolling interests
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Net loss
Ending Balance, shares
Ending Balance
Assets of Disposal Group, Including Discontinued Operation, Current
Disposal Group, Including Discontinued Operation, Assets, Current
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment
Assets held for sale
Disposal Group, Including Discontinued Operation, Assets
Liabilities of Disposal Group, Including Discontinued Operation, Current
Disposal Group, Including Discontinued Operation, Liabilities, Current
Disposal Group, Including Discontinued Operation, Other Liabilities
Disposal Group, Including Discontinued Operation, Other Liabilities
Liabilities held for sale
Disposal Group, Including Discontinued Operation, Liabilities
Schedule of asset retirement obligations
Schedule of Asset Retirement Obligations [Table Text Block]
Derivatives - Noncurrent [Member]
Derivative Noncurrent [Member]
Derivative Noncurrent [Member]
Total derivatives, Asset, Gross
Derivative Asset, Fair Value, Gross Asset
Derivative Liability, Fair Value, Gross Liability
Derivative Liability, Fair Value, Gross Liability
Derivative Assets Offset In Balance Sheet
Derivative Assets Offset In Balance Sheet
Derivative Assets Offset In Balance Sheet
Derivative Liabilities Offset In Balance Sheet
Derivative Liabilities Offset In Balance Sheet
Derivative Liabilities Offset In Balance Sheet
Derivative Assets, Current
Derivative Asset, Current
Derivative Assets, Noncurrent
Derivative Asset, Noncurrent
Derivative Asset, Fair Value, Net
Derivative Liabilities, Current
Derivative Liability, Current
Derivative Liabilities, Noncurrent
Derivative Liability, Noncurrent
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Other Ownership Interests [Table]
Schedule of Other Ownership Interests [Table]
General Partner Interest [Member]
General Partner Interest [Member]
General Partner Interest [Member]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Oil and Gas Production Type [Axis]
Oil and Gas Production Type [Axis]
Production Type [Domain]
Production Type [Domain]
Propane [Member]
Propane [Member]
Ethane [Member]
Ethane [Member]
Ethane [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]
Collar Contracts for Current Year [Member]
Collar Contracts for Current Year [Member]
Collar Contracts for Current Year [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]
Presentation
Consolidation, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Document And Entity Information [Abstract]
Document and Entity Information [Abstract]
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Trading Symbol
Trading Symbol
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Subsequent Events
Subsequent Events [Text Block]
Interest and Other Income [Abstract]
Equity interest in income of unconsolidated affiliate
Income (Loss) from Equity Method Investments
Third-party income (loss) from vertical integration services
Third-party income from vertical integration services
Third-party income from vertical integration services (b)
Deferred compensation plan income
Deferred Compensation Plan Income
Deferred Compensation Plan Income
Other income
Other Income
Interest income
Other Interest and Dividend Income
Total interest and other income
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossRevenuesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
GrossExpensesIncludedInThirdPartyIncomeFromVerticalIntegrationServices
Exploratory Costs
Oil and Gas Exploration and Production Industries Disclosures [Text Block]
Asset Retirement Obligation [Table]
Asset Retirement Obligation [Table]
Asset Retirement Obligation [Table]
Asset Retirement Obligation [Line Items]
Asset Retirement Obligation [Line Items]
[Line Items] for Asset Retirement Obligation [Table]
Asset Retirement Obligation Accretion Expense From Discontinued Operations Included in Asset Retirement Obligation Balance At End of Period
Asset Retirement Obligation Accretion Expense From Discontinued Operations Included in Asset Retirement Obligation Balance At End of Period
Asset Retirement Obligation Accretion Expense From Discontinued Operations Included in Asset Retirement Obligation Balance At End of Period
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning asset retirement obligations
Asset Retirement Obligation
AssetRetirementObligationLiabilitiesAcquiredInBusinessCombination
AssetRetirementObligationLiabilitiesAcquiredInBusinessCombination
AssetRetirementObligationLiabilitiesAcquiredInBusinessCombination
Asset Retirement Obligation, Liabilities Incurred
Asset Retirement Obligation, Liabilities Incurred
Changes in estimates
Asset Retirement Obligation, Revision of Estimate
Disposition of wells
Asset Retirement Obligations Written Off Through Disposition Of Wells
Asset Retirement Obligations Written Off Through Disposition of Wells.
Liabilities settled
Asset Retirement Obligation, Liabilities Settled
Accretion of discount from continuing operations
Accretion of discount from integrated services
Asset Retirement Obligation Accretion Expense Integrated Services
Asset Retirement Obligation Accretion Expense related to Integrated Services
Ending asset retirement obligations
Asset retirement obligations, current portions
Asset Retirement Obligation, Current
Above market and idle drilling and well services equipment charges
Transportation commitment charges
Transportation Commitment Loss
Transportation Commitment Loss
Inventory valuation charges
Tangible Asset Impairment Charges
Other
Other General Expense
Contingency and environmental accrual adjustments
Change In Accrual For Legal And Environmental Contingencies
Change in Accrual for Legal and Environmental Contingencies.
Terminated drilling rig contract charges
Terminated Drilling Rig Expense
Terminated Drilling Rig Expense
Total other expense
Capitalized exploratory well and project activity
Capitalized Exploratory Well and Project Activity [Table Text Block]
Capitalized Exploratory Well and Project Activity [Table Text Block]
Aging of 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]
July 15, 2022 Interest Rate Swaps [Member]
July 15, 2022 Interest Rate Swaps [Member]
July 15, 2022 Interest Rate Swaps [Member]
June 30, 2022 Interest Rate Swaps [Member]
June 30, 2022 Interest Rate Swaps [Member]
June 30, 2022 Interest Rate Swaps [Member]
September 30, 2021 Interest Rate Swaps [Member]
September 30, 2021 Interest Rate Swaps [Member]
September 30, 2021 Interest Rate Swaps [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Trading Activity, Gains and Losses, Net [Line Items]
Proceeds from Termination of Interest Rate Derivatives
Proceeds from Termination of Interest Rate Derivatives
Proceeds from Termination of Interest Rate Derivatives
Derivative, Fixed Interest Rate
Derivative, Fixed Interest Rate
Derivative, Average Variable Interest Rate
Derivative, Average Variable Interest Rate
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
Notional amount of debt
Swap Contract Notional Amount Fixed Rate of Interest and Variable On-The-Run 10-yr Treasury Rate
Swap Contract Notional Amount Fixed Rate of Interest and Variable On-The-Run 10-yr Treasury Rate
Share-based Award Activity [Abstract]
Share-based Award Activity [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]
Class of Stock [Axis]
Class of Stock [Axis]
Class of Stock [Domain]
Class of Stock [Domain]
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]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares
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
Other Expense
Other Operating Expenses Text Block
Other Operating Expenses [Text Block]
Organization And Nature Of Operations
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
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]
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]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Maximum Borrowing Capacity
Line of Credit Facility, Maximum Borrowing Capacity
Outstanding borrowing
Long-term Line of Credit
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Accounts receivable:
Accounts Receivable, Net, Current [Abstract]
Trade, net
Accounts Receivable, Net, Current
Due from affiliates
Due from Affiliate, Current
Income taxes receivable
Income Taxes Receivable, Current
Inventories
Inventory, Net
Prepaid expenses
Prepaid Expense, Current
Deferred income taxes
Deferred Tax Assets, Net of Valuation Allowance, Current
Assets held for sale
Other current assets:
Other Assets, Current [Abstract]
Other Assets, Current [Abstract]
Derivatives Assets, 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
Deferred income taxes
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
Goodwill
Goodwill
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net
Other assets:
Other Assets, Noncurrent [Abstract]
Investment in unconsolidated affiliate
Equity Method Investments
Derivative Assets, 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 Tax Liabilities, Net, Current
Deferred Tax Liabilities, Net, Current
Liabilities held for sale
Other current liabilities:
Other Liabilities, Current [Abstract]
Derivative Liabilities, Current
Other
Other Liabilities, Current
Total current liabilities
Liabilities, Current
Derivative Liabilities, Noncurrent
Deferred income taxes
Deferred Tax Liabilities, Net, Noncurrent
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)
Total equity attributable to common stockholders
Stockholders' Equity Attributable to Parent
Noncontrolling interests in consolidating subsidiaries
Stockholders' Equity Attributable to Noncontrolling Interest
Total equity
Commitments and contingencies
Commitments and Contingencies
Liabilities and Stockholders' Equity, Total
Liabilities and Equity
Components of interest and other income
Interest and Other Income [Table Text Block]
Income Tax Disclosure [Abstract]
Income tax (provisions) benefits attributable to income from continuing operations
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Interest And Other Income
Other Income and Other Expense Disclosure [Text Block]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Discontinued Operations Assets and Liabilities Included in Assets and Liabilities Held for Sale [Table Text Block]
Discontinued Operations Assets and Liabilities Included in Assets and Liabilities Held for Sale [Table Text Block]
[Table Text Block] for Discontinued Operations Assets and Liabilities Included in Assets and Liabilities Held for Sale [Table]
Basis Of Presentation
Basis of Presentation and Significant Accounting Policies [Text Block]
Income Taxes
Income Tax Disclosure [Text Block]
Capitalized Exploratory Well and Project Activity [Table]
Capitalized Exploratory Well and Project Activity [Table]
Capitalized Exploratory Well and Project Activity [Table]
Capitalized exploratory costs [Member]
Capitalized exploratory costs [Member]
Capitalized exploratory costs [Member]
Beginning capitalized exploratory costs
Capitalized Exploratory Well Costs
Additions to exploratory costs pending the 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
Ending capitalized exploratory costs
Capitalized exploratory costs that have been suspended, One year or less
Capitalized Exploratory Well Costs that Have Been Capitalized for Period of One Year or Less
Current income taxes
Deferred income taxes
Income tax benefit (provision)
Effective Tax Rate
Effective Income Tax Rate Reconciliation, Percent
Statutory Tax Rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Unrecognized tax benefit recognized in period
Unrecognized tax benefit recognized in period
Unrecognized tax benefit recognized in period
Unrecognized Tax Benefits
Unrecognized Tax Benefits
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]
Collar Contracts With Short Puts for Year 2 - Extendible for Year 3 [Member]
Collar Contracts With Short Puts for Year 1 - Extendible for Year 2 [Member]
Collar Contracts With Short Puts for Year 1 - Extendible for Year 2 [Member]
Rollfactor Swap Contracts for Current Year [Member]
Rollfactor Swap Contracts for Current Year [Member]
Rollfactor Swap Contracts for Current Year [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]
Rollfactor Swap Contracts for Year 3 [Member]
Rollfactor Swap Contracts for Year 3 [Member]
Rollfactor Swap Contracts for Year 3 [Member]
NYMEX swap multiple, second nearby month
Swap Multiple Second Nearby Month
Swap Multiple Second Nearby Month
NYMEX swap multiple, third nearby month
Swap Multiple Third Nearby Month
Swap Multiple Third Nearby Month
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Deferred Compensation Arrangement with Individual, Compensation Expense
Deferred Compensation Arrangement with Individual, Compensation Expense
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Accounts Payable, Current
Accounts Payable, Current
Postretirement benefit obligation
Defined Benefit Plan, Benefit Obligation
Common stock, par value
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized
Common Stock, Shares Authorized
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Treasury Stock, Shares
Treasury Stock, Shares
Marketing Gas contracts, in MMBTU [Member]
Marketing Gas contracts, in MMBTU [Member]
Marketing Gas contracts, in MMBTU [Member]
Marketing gas contracts, price per MMBTU [Member]
Marketing gas contracts, price per MMBTU [Member]
Marketing gas contracts, price per MMBTU [Member]
Marketing Oil contracts, in BBL [Member]
Marketing Oil contracts, in BBL [Member]
Marketing Oil contracts, in BBL [Member]
Marketing oil contracts, price per BBL [Member] [Member]
Marketing oil contracts, price per BBL [Member]
Marketing oil contracts, price per BBL [Member]
Basis Swap Contracts for June 2015 [Member]
Basis Swap Contracts for June 2015 [Member]
Basis Swap Contracts for June 2015 [Member]
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]
Continuing Operations [Member]
Continuing 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 attributable to parent
Participating Securities, Distributed and Undistributed Earnings, Basic
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic
Basic income (loss) from continuing operations attributable to common stockholders
Net Income (Loss) Available to Common Stockholders, Basic
Diluted income (loss) from continuing operations attributable to common stockholders
Net Income (Loss) Available to Common Stockholders, Diluted