Equity Method Investments and Joint Ventures [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Alpine JV Alpine JV [Member] Alpine JV [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Initial investment commitment in joint venture Initial Investment Commitment In Joint Venture Initial Investment Commitment In Joint Venture Initial investment commitment in joint venture, period Initial Investment Commitment In Joint Venture, Period Initial Investment Commitment In Joint Venture, Period Number of wells to be drilled Number Of Wells Agreed For Drilling Number Of Wells Agreed For Drilling Oil and natural gas, price per barrel Oil and Gas, Average Sale Price Number of trading days Number Of Trading Days Number Of Trading Days Threshold through consecutive days Threshold Through Consecutive Days Threshold Through Consecutive Days Debt Disclosure [Abstract] DEBT Long-term Debt [Text Block] Fair Value Disclosures [Abstract] Proved oil and natural gas properties Impairment of Oil and Gas Properties, Proved Properties Impairment of Oil and Gas Properties, Proved Properties Unproved properties Impairment of Oil and Gas Properties, Unproved Properties Impairment of Oil and Gas Properties, Unproved Properties Unrecovered capital costs Unrecovered Capital Costs Unrecovered Capital Costs Inventory Inventory Write-down Other Other Asset Impairment Charges Total Asset Impairment Charges Deferred gain Debt Instrument Unamortized Premium On Exchange Of Debt The amount of debt premium that was originally recognized on exchange of the instrument that has yet to be amortized. Issuance costs and original issue discounts Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Net deferred gain and issuance costs Deferred Gain (Loss) and Issuance Costs, Net Carrying value as of the balance sheet of the deferred gain (loss) and issuance costs, net. OTHER INFORMATION Other Information abstract Other Information [Table] Other Information [Table] Other Information [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Total derivatives Other Noncurrent Liabilities [Member] Other Information [Line Items] Other Information [Line Items] [Line Items] for Other Information [Table] Cash restricted for capital investments and distributions to a joint venture (JV) partner Restricted Cash and Cash Equivalents Other Current Assets Other Assets [Abstract] Net amounts due from joint interest partners Due from Joint Ventures Derivative assets Derivative Asset, Current Prepaid expenses Prepaid Expense, Current Other Other Receivables Other current assets, net Other Assets, Current Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss Accrued Liabilities Accrued Liabilities [Abstract] Accrued employee-related costs Employee-related Liabilities, Current Accrued taxes other than on income Accrual for Taxes Other than Income Taxes, Current Accrued interest Interest Payable, Current Lease liability Lease, Liability, Current Lease, Liability, Current Asset retirement obligation Asset Retirement Obligation, Current Other Other Accrued Liabilities, Current Accrued liabilities Accrued Liabilities, Current Non-current asset retirement obligation Asset Retirement Obligations, Noncurrent Taxes paid Income Taxes Paid Interest paid, net of capitalized amounts Interest Paid, Excluding Capitalized Interest, Operating Activities Statement of Comprehensive Income [Abstract] Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Comprehensive loss attributable to common stock Comprehensive Income (Loss), Net of Tax, Attributable to Parent Condensed Financial Information Disclosure [Abstract] Schedule of condensed balance sheet Condensed Balance Sheet [Table Text Block] Schedule of condensed income statement Condensed Income Statement [Table Text Block] Schedule of condensed cash flow statement Condensed Cash Flow Statement [Table Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated (Deficit) Earnings Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Equity Attributable to Common Stock Parent [Member] Equity Attributable to Noncontrolling Interests Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Net (loss) income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Contribution from noncontrolling interest holders, net Noncontrolling Interest, Increase from Sale of Parent Equity Interest Distributions to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Decrease in redeemable noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. Share-based compensation, net APIC, Share-based Payment Arrangement, Increase for Cost Recognition Ending balance Subsequent Events [Abstract] OTHER SUBSEQUENT EVENTS Subsequent Events [Text Block] Revenue from Contract with Customer [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Axis] Products and Services [Domain] Product and Service [Domain] Oil Oil and Condensate [Member] Natural gas Natural Gas, Production [Member] NGLs Propane [Member] Electricity Sale Of Electricity [Member] This member represents electricity sales. Marketing, trading and other Marketing, Trading, and Other [Member] Marketing, Trading, and Other Disaggregation of revenue Disaggregation of Revenue [Line Items] Oil and natural gas sales Revenue from Contract with Customer, Excluding Assessed Tax Other revenue Revenue Not from Contract with Customer, Other Other revenue Other Operating Income Net derivative gain (loss) from commodity contracts Gain (Loss) on Derivative Instruments, Net, Pretax Total revenues Revenues Earnings Per Share [Abstract] Basic EPS calculation Earnings Per Share, Basic [Abstract] NET LOSS ATTRIBUTABLE TO COMMON STOCK Net Income (Loss) Attributable to Parent Net loss attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Weighted-average common shares outstanding — basic Weighted Average Number of Shares Outstanding, Basic Basic (in dollars per share) Earnings Per Share, Basic Diluted EPS calculation Earnings Per Share, Diluted [Abstract] Net loss attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Diluted Dilutive effect of potentially dilutive securities (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted-average common shares outstanding — diluted Weighted Average Number of Shares Outstanding, Diluted Diluted (in dollars per share) Earnings Per Share, Diluted Weighted-average anti-dilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2014 Revolving Credit Facility (Shared First Priority Lien) Secured Debt [Member] 2017 Credit Agreement (Shared First Priority Lien) Secured First Lien Second Out Credit Agreement2017 [Member] Represents information pertaining to Secured First Lien Second Out Credit Agreement which is entered into by entity in 2017. 2016 Credit Agreement (Shared First Priority Lien) Secured First Lien Second Out Credit Agreement [Member] Represents information pertaining to Secured First Lien Second Out Credit Agreement which is entered into by entity in 2016. Second Lien Notes (Second Priority Lien) Senior Lien [Member] Senior Notes (Unsecured) Senior Notes [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 5% Senior Notes due 2020 Senior Notes500 Percent Due2020 [Member] Represents the senior notes payable that bear an interest rate of 5.00 percent and will mature in 2020. 5.5% Notes Due 2021 Senior Notes550 Percent Due2021 [Member] Represents the senior notes payable that bear an interest rate of 5.50 percent and will mature in 2021. 6% Senior Notes due 2024 Senior Notes600 Percent Due2024 [Member] Represents the senior notes payable that bear an interest rate of 6.00 percent and will mature in 2024. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Applicable margin on LIBOR loans London Interbank Offered Rate (LIBOR) [Member] Applicable margin on Alternate Base Rate loans Debt Instrument, Adjustable Base Rate [Member] Represents alternate base rate Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Debt instrument Debt Instrument [Line Items] Debt Long-term Debt, Unclassified [Abstract] Total Long-Term Debt Long-term Debt, Gross Interest rate added to variable rate basis Debt Instrument, Basis Spread on Variable Rate Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Period before maturity of the 2016 Credit Agreement notes that triggers accelerated payment Period Before Maturity of Second Debt, Maturity of First Debt that Triggers Accelerated Payment Period before maturity of the second debt that triggers accelerated payment when the first debt matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. Outstanding amount of 2016 Credit Agreement notes that triggers accelerated payment Debt Instrument Covenant, Outstanding Amount, Maturity Trigger The outstanding amount of certain notes that triggers the acceleration of the maturity of debt instrument under a credit agreement. Principal amount due by June 2021 Long Term Debt Maturities Repayments Of Principal In June 2021 Amount of long-term debt payable in June 2021. Principal amount due by December 2021 Long Term Debt Maturities Repayments Of Principal In December 2021 Amount of long-term debt payable in December 2021. Principal amount due by June 2022 Long Term Debt Maturities Repayments Of Principal In June 2022 Amount of long-term debt payable in June 2022. Principal amount due by December 2022 Long Term Debt Maturities Repayments Of Principal In December 2022 Amount of long term debt payable in December 2022. Statement of Cash Flows [Abstract] CASH FLOW FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, depletion and amortization Depreciation, Depletion and Amortization Asset impairments Net derivative (gain) loss from commodity contracts Derivative, Gain (Loss) on Derivative, Net Net proceeds from settled commodity derivatives Proceeds (Payments) on Derivative Settlements to Reconcile Net Income Loss to Cash provided by Used in Operating Activities The net proceeds (payments) on derivative settlements, which increase (reduce) net income and are thus added (deducted) when calculating cash provided by or used in operating activities. Net gain on early extinguishment of debt Gain (Loss) on Extinguishment of Debt Amortization of deferred gain Amortization Of Deferred Gains And Debt Issuance Cost The amount of amortization of deferred gains and deferred debt issuance costs. Dry hole expenses Results of Operations, Dry Hole Costs Other non-cash charges to income, net Other Noncash Income (Expense) Changes in operating assets and liabilities, net Increase (Decrease) in Operating Capital Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOW FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Capital investments Payments to Acquire Property, Plant, and Equipment Changes in capital investment accruals Increase Decrease In Capital Investment Accrual Represents the information pertaining to changes in capital investment accruals Asset divestitures Proceeds from Sale of Productive Assets Acquisitions Purchase of Assets, Net The cash outflows related to purchasing assets other than capital expenditures, including assets acquired as the result of a merger. Other Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOW FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from 2014 Revolving Credit Facility Proceeds from Lines of Credit Repayments of 2014 Revolving Credit Facility Repayments of Lines of Credit Debt repurchases Repayments of Subordinated Debt 2020 Senior Notes payment Repayments of Senior Debt Contributions from noncontrolling interest holders, net Proceeds from Noncontrolling Interests Distributions paid to noncontrolling interest holders Payments of Ordinary Dividends, Noncontrolling Interest Shares canceled for taxes Payment, Tax Withholding, Share-based Payment Arrangement Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Increase in cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash—beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash—end of period Noncontrolling Interest [Table] Noncontrolling Interest [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Ares JV Ares Joint Venture [Member] Represents Ares joint venture (Ares JV). BSP JV Benefit Street Partners [Member] Represents Benefit Street Partners (BSP). Noncontrolling Interest Noncontrolling Interest [Line Items] Equity Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Equity Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Accrued distributions Minority Interest Decrease from Distributions, Accrual The amount of decrease in noncontrolling interest from accrual of distribution. Distributions to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Statement of Financial Position [Abstract] CURRENT ASSETS Assets, Current [Abstract] Cash Cash Trade receivables Accounts Receivable, after Allowance for Credit Loss, Current Inventories Inventory, Net Other current assets, net Total current assets Assets, Current PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment, Gross Accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property, plant and equipment, net Property, Plant and Equipment, Net OTHER ASSETS Other Assets, Noncurrent TOTAL ASSETS Assets CURRENT LIABILITIES Liabilities, Current [Abstract] Current maturities of long-term debt Debt Instrument Carrying Amount Current Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Accounts payable Accounts Payable, Current Accrued liabilities Total current liabilities Liabilities, Current LONG-TERM DEBT Debt Instrument Carrying Amount Noncurrent Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as noncurrent. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. DEFERRED GAIN AND ISSUANCE COSTS, NET OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent MEZZANINE EQUITY Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Carrying Amount EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock (20 million shares authorized at $0.01 par value) no shares outstanding at March 31, 2020 and December 31, 2019 Preferred Stock, Value, Issued Common stock (200 million shares authorized at $0.01 par value) outstanding shares (March 31, 2020 - 49,453,297 and December 31, 2019 - 49,175,843) Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total equity attributable to common stock Stockholders' Equity Attributable to Parent Equity attributable to noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity TOTAL LIABILITIES AND EQUITY Liabilities and Equity Inventory Disclosure [Abstract] INVENTORIES Inventory Disclosure [Text Block] Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] EARNINGS PER SHARE Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Calculation of basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Combined Guarantor Subsidiaries Guarantor Subsidiaries [Member] Combined Non-Guarantor Subsidiaries Non-Guarantor Subsidiaries [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reportable Legal Entities Reportable Legal Entities [Member] Eliminations Intersegment Eliminations [Member] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Net cash (used in) provided by operating activities Net cash provided by (used in) investing activities Net cash provided by (used in) financing activities OGCI OGCI [Member] OGCI [Member] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] Elk Hills Carbon JV Elk Hills Carbon [Member] Elk Hills Carbon [Member] Partnership contribution Proceeds from Partnership Contribution Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Retirement Benefits [Abstract] Components of the net periodic benefit costs Schedule of Net Benefit Costs [Table Text Block] ECR Ecr Corporate Holdings [Member] This member represents ECR corporate holdings Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period One Debt Instrument, Redemption, Period One [Member] Debt Instrument, Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Debt Instrument, Redemption, Period Three Debt Instrument, Redemption, Period Three [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Class A Common Class A [Member] Common Class C Common Class C [Member] Series B Preferred Stock Series B Preferred Stock [Member] Percentage of common interest held by CRC Noncontrolling Interest, Ownership Percentage by Parent Percentage of common interest held by ECR Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Value of interests Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount Redemption period, extended Redemption Period, Extended The option to extension additional period of redemption. Maximum redemption period Period of Make Whole Payment and Maximum Redemption Period The period of make whole payment and maximum redemption period. Indebtedness in excess Accounts Receivable from Securitization Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Leases [Abstract] Operating lease, net Operating Lease, Right-of-Use Asset Finance lease, net Finance Lease, Right-of-Use Asset Total right-of-use assets Leases, Right-of-Use Asset Leases, Right-of-Use Asset Operating lease Operating Lease, Liability, Current Finance lease Finance Lease, Liability, Current Operating lease Operating Lease, Liability, Noncurrent Finance lease Finance Lease, Liability, Noncurrent Total lease liabilities Total Lease Liability Total Lease Liability Number of drilling rigs released Operating Lease, Right-of-Use Asset, Number Of Drilling Rigs Released Operating Lease, Right-of-Use Asset, Number Of Drilling Rigs Released Operating Lease, Right-of-Use Asset, Number Of Drilling Rigs Operating Lease, Right-of-Use Asset, Number Of Drilling Rigs Operating Lease, Right-of-Use Asset, Number Of Drilling Rigs Preferred stock, authorized shares (in shares) Preferred Stock, Shares Authorized Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, outstanding shares (in shares) Preferred Stock, Shares Outstanding Common stock, authorized shares (in shares) Common Stock, Shares Authorized Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, outstanding shares (in shares) Common Stock, Shares, Outstanding Schedule of disaggregated revenue Disaggregation of Revenue [Table Text Block] Schedule of supplemental balance sheet information related to operating leases Lease Operating Balance Sheet Presentation And Other Information [Table Text Block] The tabular disclosure of the presentation of the operating lease balance sheet accounts and other information. Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Retirement Plan Type [Domain] Pension Benefit Pension Plan [Member] Postretirement Benefit Other Postretirement Benefits Plan [Member] Postretirement and Other Benefit Plans Disclosure Defined Benefit Plan Disclosure [Line Items] Net periodic benefit costs: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Recognized actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Total Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Employer contributions to pension plan Defined Benefit Plan, Plan Assets, Contributions by Employer Contributions deferred till December 2020 Defined Benefit Plan, Plan Assets, Contributions By Employer, Amount Deferred Defined Benefit Plan, Plan Assets, Contributions By Employer, Amount Deferred Effective tax rate Effective Income Tax Rate Reconciliation, Percent JOINT VENTURES Equity Method Investments and Joint Ventures Disclosure [Text Block] OTHER INFORMATION OTHER INFORMATION [Text Block] The entire disclosure for Other information. Derivative Instruments and Hedging Activities Disclosure [Abstract] Offsetting Assets [Table] Offsetting Assets [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Gross Amounts Recognized at Fair Value Estimate of Fair Value Measurement [Member] Net Fair Value Presented in the Balance Sheet Reported Value Measurement [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Commodity Contracts Commodity Contract [Member] Other current assets, net Other Current Assets [Member] Other assets Other Assets [Member] Accrued liabilities Accrued Liabilities [Member] Fair Value of Derivatives Offsetting Assets [Line Items] Gross Amounts Recognized at Fair Value Derivative Asset, Fair Value, Gross Asset Gross Amounts Offset in the Balance Sheet Derivative Asset, Fair Value, Gross Liability Net Fair Value Presented in the Balance Sheet Derivative Asset Gross Amounts Recognized at Fair Value Derivative Liability, Fair Value, Gross Liability Gross Amounts Offset in the Balance Sheet Derivative Liability, Fair Value, Gross Asset Net Fair Value Presented in the Balance Sheet Derivative Liability Total derivatives Derivative Assets (Liabilities), at Fair Value, Net Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Percentage of holding assets by subsidiaries in consolidated assets Percentage Of Holding Assets By subsidiaries In Consolidated Assets Percentage of total consolidated assets under financing agreement by subsidiary. Assets [Abstract] Assets [Abstract] Total current assets Investments in consolidated subsidiaries Investments in and Advances to Affiliates, Amount of Equity Total property, plant and equipment, net Liabilities and Equity [Abstract] Liabilities and Equity [Abstract] Total current liabilities Amounts due to (from) affiliates Due to Affiliate, Noncurrent Mezzanine equity Total equity PENSION AND POSTRETIREMENT BENEFIT PLANS Pension and Other Postretirement Benefits Disclosure [Text Block] Debt Repurchases of debt Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount1 Face (par) amount of the original debt instrument that was repurchased during the period. Repurchase value of the principal amounts Early Repayment of Senior Debt Pre-tax gain on extinguishment of debt, net of a reduction in deferred issuance costs CONDENSED CONSOLIDATING FINANCIAL INFORMATION Condensed Financial Information of Parent Company Only Disclosure [Text Block] Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Total revenues Total costs Costs and Other Deductions Total costs of sales, operating expenses, and other operating expenses for the period. Non-operating (loss) income Nonoperating Income (Expense) LOSS BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net income attributable to noncontrolling interests Schedule of changes in noncontrolling interests Non-redeemable and Redeemable Noncontrolling Interest [Table Text Block] Tabular disclosure of non-redeemable and redeemable noncontrolling interest. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Letters of Credit Letter of Credit [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] 2014 Revolving Credit Facility Revolving Credit Facility [Member] Available borrowing capacity before a month-end minimum liquidity requirement Line of Credit Facility, Current Borrowing Capacity Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Financial covenant minimum month end liquidity Debt Instrument Covenant Minimum Monthly Liquidity Amount of minimum monthly liquidity required to maintain, per debt covenant agreement. Borrowing base Debt Borrowing Base The amount of money that maybe borrowed based on the value of the collateral the entity pledges. Maximum sub-limit on borrowing capacity for issuance of letters of credit Line Of Credit Facility Maximum Borrowing Capacity Letters Of Credit Sublimit Maximum borrowing capacity of letters of credit as sub-limit of the main credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Aggregate letters of credit issued Letters of Credit Outstanding, Amount Available liquidity Available Liquidity Available Liquidity Unrestricted cash Unrestricted Cash Unrestricted Cash Estimated fair value of long-term debt Long-term Debt, Fair Value Debt carrying value Schedule of other current assets, net Schedule of Other Current Assets [Table Text Block] Schedule of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Asset Impairments Asset Impairment Charges [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] ACCOUNTING AND DISCLOSURE CHANGES New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Schedule of Asset Impairments Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Crude Oil Hedge Positions Energy Related Derivative [Member] Interest-rate Contract Interest Rate Cap [Member] One month LIBOR One Month Libor [Member] Represents one month LIBOR. Derivatives Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative, amount of hedged item Derivative, Amount of Hedged Item Interest rate to be in place to receive payment Derivative, Cap Interest Rate Gain (loss) from interest-rate risk Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net LEASES Lessee, Finance Leases [Text Block] LEASES Lessee, Operating Leases [Text Block] Commitments and Contingencies Disclosure [Abstract] LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Schedule of Long-term debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Net Deferred Gain and Issuance Costs Schedule of Deferred Gain and Issuance Costs [Table Text Block] Schedule of Deferred Gain and Issuance Costs [Table Text Block] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Mezzanine Equity - Redeemable Noncontrolling Interests Mezzanine Equity Redeemable Noncontrolling Interest [Member] This element represents mezzanine equity redeemable noncontrolling interest. Mezzanine Equity - Redeemable Noncontrolling Interests Temporary Equity [Line Items] Mezzanine Equity - Redeemable Noncontrolling Interests Beginning balance Net income attributable to noncontrolling interests Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Redeemable Contributions from noncontrolling interest holders, net Temporary Equity, Increase From Contributions The amount of increase in temporary equity due to contributions. Accrued distributions Ending balance DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Shared First Priority Lien Shared First Priority Lien [Member] Shared First Priority Lien [Member] Dividends paid Payments of Dividends Potential reduction in debt Potential Reduction in Debt Potential Reduction in Debt Interest not paid Debt Instrument, Interest Not Paid Debt Instrument, Interest Not Paid Grace period Debt Instrument, Grace Period Debt Instrument, Grace Period Aggregate book cash balance requirement Debt Instrument, Aggregate Book Cash Balance Requirement For More Than Three Consecutive Business Days Debt Instrument, Aggregate Book Cash Balance Requirement For More Than Three Consecutive Business Days Materials and supplies Other Inventory, Supplies, Gross Finished goods Inventory, Finished Goods, Gross Total Income Statement [Abstract] REVENUES Revenues [Abstract] COSTS Costs and Other Deductions [Abstract] No definition available Production costs Production Costs, Period Cost General and administrative expenses Selling, General and Administrative Expense Taxes other than on income Taxes, Miscellaneous Exploration expense Exploration Expense Other expenses, net Other Operating Income (Expense), Net Total costs OPERATING (LOSS) INCOME Operating Income (Loss) NON-OPERATING (LOSS) INCOME Nonoperating Income (Expense) [Abstract] Interest and debt expense, net Interest And Debt Expense, Net Interest And Debt Expense, Net Net gain on early extinguishment of debt Other non-operating expenses Other Nonoperating Expense Income tax Income Tax Expense (Benefit) NET LOSS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS Net Income (Loss) Attributable to Noncontrolling Interest [Abstract] Net income attributable to noncontrolling interests Net loss attributable to common stock per share