Document and Entity Information Statement [Table] Statement [Line Items] Statement Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Consolidated Condensed Balance Sheets Assets, Current [Abstract] CURRENT ASSETS Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents-end of period Cash and cash equivalents-beginning of period Cash and cash equivalents Accounts Receivable, Net, Current Trade receivables, net Inventory, Net Inventories Total Other Assets, Current Other current assets, net Assets, Current Total current assets Property, Plant and Equipment, Gross PROPERTY, PLANT AND EQUIPMENT Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation, depletion and amortization Property, Plant and Equipment, Net Total property, plant and equipment Other Assets, Noncurrent OTHER ASSETS Assets TOTAL ASSETS Liabilities, Current [Abstract] CURRENT LIABILITIES 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. Debt Instrument Carrying Amount Current Less Current Maturities of Long-Term Debt Current maturities of long-term debt Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued liabilities Liabilities, Current Total current liabilities 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. Debt Instrument Carrying Amount Noncurrent Long-Term Debt - Principal Amount LONG-TERM DEBT - PRINCIPAL AMOUNT Carrying value as of the balance sheet of the deferred gain (loss) and issuance costs, net. Deferred Gain (Loss) and Issuance Costs, Net DEFERRED GAIN AND ISSUANCE COSTS, NET Deferred gain and issuance costs, net Other Liabilities, Noncurrent OTHER LONG-TERM LIABILITIES Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] EQUITY Preferred Stock, Value, Issued Preferred stock (20 million shares authorized at $0.01 par value) no shares outstanding at March 31, 2017 and December 31, 2016 Common Stock, Value, Issued Common stock (200 million shares authorized at $0.01 par value) outstanding shares (March 31, 2017 - 42,592,983 and December 31, 2016 - 42,542,637) Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Stockholders' Equity Attributable to Parent Total equity attributable to common stock Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interest Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total equity Liabilities and Equity TOTAL LIABILITIES AND EQUITY Preferred Stock, Shares Authorized Preferred stock, authorized shares Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Outstanding Preferred stock, outstanding shares Common Stock, Shares Authorized Common stock, authorized shares Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares, Outstanding Common stock, outstanding shares Consolidated Condensed Statements of Operations Revenues [Abstract] REVENUES AND OTHER Oil and Gas Sales Revenue Oil and gas net sales Derivative, Gain (Loss) on Derivative, Net Net derivative (gains) losses Net derivative gains (losses) Other Operating Income Other revenue Revenues Total revenues and other Costs and Other Deductions [Abstract] COSTS AND OTHER Production Costs, Period Cost Production costs Selling, General and Administrative Expense General and administrative expenses Depreciation, Depletion and Amortization Depreciation, depletion and amortization Taxes, Miscellaneous Taxes other than on income Exploration Expense Exploration expense Other Operating Income (Expense), Net Other expenses, net Total costs of sales, operating expenses, and nonoperating expenses for the period. Costs and Other Deductions Total costs and other Operating Income (Loss) OPERATING INCOME (LOSS) Nonoperating Income (Expense) [Abstract] NON-OPERATING INCOME (LOSS) Pre-tax interest expense Interest and debt expense, net Gain (Loss) on Repurchase of Debt Instrument Net gains on early extinguishment of debt Net gains on early extinguishment of debt Pre-tax gain on repurchase of debt Gain (Loss) on Disposition of Assets Gains on asset divestitures Gain on divestiture of non-core assets Gains on asset divestitures Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest INCOME (LOSS) BEFORE INCOME TAXES Pre-tax income Income Tax Expense (Benefit) Income tax benefit Net Income (Loss), Including Portion Attributable to Noncontrolling Interest NET INCOME (LOSS) Net income (loss) Net Income (Loss) Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interest Net Income (Loss) Attributable to Parent NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK Net income (loss) attributable to common stock EARNINGS PER SHARE Earnings (loss) per share of common stock Earnings Per Share, Basic Basic (in dollars per share) Basic EPS (in dollars per share) Earnings Per Share, Diluted Diluted EPS (in dollars per share) Diluted (in dollars per share) Consolidated Condensed Statements of Comprehensive Income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive income items: Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax Reclassification to income of realized losses on pension and postretirement Other Comprehensive Income (Loss), Net of Tax Total other comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) attributable to common stock Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax Pension and postretirement income, associated tax Consolidated Condensed Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOW FROM OPERATING ACTIVITIES Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Deferred Income Tax Expense (Benefit) Deferred income tax benefit Deferred tax benefit resulting from change in valuation allowance The net receipt (payment) on derivative settlements, which reduce or increase net income and are thus added back or deducted when calculating cash provided by or used in operating activities. Receipt Payment On Derivative Settlements, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Net (payments) proceeds on settled derivatives The amount of amortization of deferred gains and deferred debt issuance costs. Amortization Of Deferred Gains And Debt Issuance Cost Deferred gain and issuance costs amortization Other Noncash Expense Other non-cash losses in income, net Exploration Abandonment and Impairment Expense Dry hole expenses Increase (Decrease) in Operating Capital Changes in operating assets and liabilities, net Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] CASH FLOW FROM INVESTING ACTIVITIES Payments to Acquire Property, Plant, and Equipment Capital investments Represents the information pertaining to changes in capital investment accruals Increase Decrease In Capital Investment Accrual Changes in capital investment accruals Proceeds from Sale of Productive Assets Asset divestitures The cash outflows related to purchasing assets other than capital expenditures, including assets acquired as the result of a merger. Purchase of Assets, Net Acquisitions and other Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used by investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] CASH FLOW FROM FINANCING ACTIVITIES Proceeds from Lines of Credit Proceeds from revolving credit facility Repayments of Lines of Credit Repayments of revolving credit facility Repayment of revolving credit facility Repayments of Senior Debt Payments on first-lien first-out term loan Repayment of term loan Repayments of Subordinated Debt Debt repurchases Payments of Debt Restructuring Costs Debt transaction costs Proceeds from Noncontrolling Interests Contribution from noncontrolling interest, net Proceeds from Issuance of Common Stock Issuance of common stock Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash used by financing activities Net Cash Provided by (Used in) Continuing Operations Increase (decrease) in cash and cash equivalents No definition available. THE SPIN-OFF AND BASIS OF PRESENTATION The entire disclosure for the spin-off and basis of presentation. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Spin Off and Basis of Presentation [Text Block] THE SPIN-OFF AND BASIS OF PRESENTATION ACCOUNTING AND DISCLOSURE CHANGES New Accounting Pronouncements and Changes in Accounting Principles [Text Block] ACCOUNTING AND DISCLOSURE CHANGES Other Information abstract OTHER INFORMATION The entire disclosure for Other information. OTHER INFORMATION. OTHER INFORMATION INVENTORIES Inventory Disclosure [Text Block] INVENTORIES DEBT Long-term Debt [Text Block] DEBT No definition available. ACQUISITIONS, DIVESTITURES AND OTHER Mergers, Acquisitions and Dispositions Disclosures [Text Block] ACQUISITIONS, DIVESTITURES AND OTHER LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] DERIVATIVES Earnings Per Share [Text Block] EARNINGS PER SHARE RETIREMENT AND POSTRETIREMENT BENEFIT PLANS Pension and Other Postretirement Benefits Disclosure [Text Block] RETIREMENT AND POSTRETIREMENT BENEFIT PLANS INCOME TAXES Income Tax Disclosure [Text Block] INCOME TAXES Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Schedule of Inventory, Current [Table Text Block] Schedule of Inventories Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Long-term Debt Derivative [Table] Derivative [Line Items] Schedule of Derivative Instruments [Table Text Block] Schedule of current hedge positions Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of fair value (at gross and net) of outstanding derivatives Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Calculation of basic and diluted EPS Schedule of Net Benefit Costs [Table Text Block] Components of the net periodic benefit costs Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Type Of Restructuring [Domain] Type of Restructuring [Domain] Spinoff [Member] Spinoff - CRC Disclosures related to the spin-off of California Resources Corporation from Occidental Petroleum Corporation. Separation and Spin Off Transactions [Line Items] Separation and Spin Off Transactions Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Percentage of outstanding shares of common stock initially retained by Occidental Stockholders' Equity, Reverse Stock Split Reverse stock split ratio Amount due from joint venture partners included in Other current assets Amount due from joint interest partners Derivative Asset, Current Derivative assets from commodities contracts Represents amount pertaining to greenhouse gas liabilities. Greenhouse gas liabilities Greenhouse gas obligations Interest Payable, Current Accrued interest Accrued Compensation-related costs. Accrued Compensation Related Costs Accrued employee-related costs Derivative Liability, Current Derivative liabilities from commodities contracts Asset Retirement Obligations, Noncurrent Non-current asset retirement obligation Interest Paid Interest paid Other Inventory, Supplies, Gross Materials and supplies Inventory, Finished Goods, Gross Finished goods Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line Of Credit [Member] Credit Facilities Revolving Credit Facility [Member] Revolving credit facility Represents Term loan member Term Loan [Member] Term loan facility Long-term Debt, Type [Axis] Longterm Debt Type [Domain] Long-term Debt, Type [Domain] Represents the senior notes payable that bear an interest rate of 8.00 percent and will mature in 2022. Senior Notes800 Percent Due2022 [Member] 8% Notes Due 2022 Represents the senior notes payable that bear an interest rate of 5.00 percent and will mature in 2020. Senior Notes500 Percent Due2020 [Member] 5% Notes Due 2020 Represents the senior notes payable that bear an interest rate of 5.50 percent and will mature in 2021. Senior Notes550 Percent Due2021 [Member] 5.5% Notes Due 2021 Debt Instrument [Line Items] Debt Long-term Debt, Unclassified [Abstract] Debt Long-term Debt, Gross Outstanding borrowings Total Debt - Principal Amount Debt carrying value Debt Instrument, Interest Rate, Stated Percentage Debt instrument interest rate stated percentage Interest rate (as a percent) The amount of debt premium that was originally recognized on exchange of the instrument that has yet to be amortized. Debt Instrument Unamortized Premium On Exchange Of Debt Deferred gains Deferred Finance Costs, Net Deferred issuance costs Range [Axis] Range [Member] Range [Domain] Minimum [Member] Minimum Maximum [Member] Maximum Represents information pertaining to 5% senior unsecured notes due January 15, 2020 (the 2020 Notes) or our 5% senior unsecured notes due September 15, 2021 (the 2021 Notes). Senior Unsecured Notes5 Due January152020 And Senior Unsecured Notes5.50 Due September152021 [Member] 5% senior unsecured notes due January 15, 2020 (the 2020 Notes) and 5.50% senior unsecured notes due September 15, 2021 (the 2021 Notes) Scenario [Axis] Scenario Unspecified [Domain] Scenario, Unspecified [Domain] Represents the information pertaining to the scenario as of the quarters ending through June 30, 2017. Scenario Quarters Ending Through June302017 [Member] Quarters ending through June 30, 2017 Represents the information pertaining to the scenario as of the quarters ending through September 30, 2017. Scenario Quarters Ending Through September302017 [Member] Quarters ending through September 30, 2017 Represents the information pertaining to the scenario as of the quarters ending through December 31, 2017. Scenario Quarters Ending Through December312017 [Member] Quarters ending through December 31, 2017 Represents the information pertaining to the scenario as of the quarters ending after the first quarter of 2018. Scenario Quarters Ending After First Quarter Of2018 [Member] Quarters ending after first quarter of 2018 Represents information pertaining to the scenario as of the end of June 30 and December 31. Scenario June And December Ending [Member] Any June 30 and December 31 Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Federal Funds Effective Swap Rate [Member] Federal fund rate Interest rate at which a bank borrows funds from other banks in the London interbank market. This is the LIBOR for a one month deposit in U.S. Dollars on the last business day of the previous month. One Month London Interbank Offered Rate L I B O R [Member] One-Month LIBOR London Interbank Offered Rate L I B O R [Member] LIBOR loans Represents alternate base rate Debt Instrument Variable Rate Base Rate [Member] Alternate Base Rate loans Line of Credit Facility, Maximum Borrowing Capacity Maximum borrowing capacity The amount of money that maybe borrowed based on the value of the collateral the entity pledges. Line Of Credit, Borrowing Base Borrowing base Increase to maximum borrowing capacity under the credit facility if any one or more of the existing or new lenders agree to provide such increased commitment amount. Line of Credit Facility Contingent Increase to Maximum Borrowing Capacity Increase to maximum borrowing capacity with lender approval The threshold amount of of outstanding balance over and above the remaining outstanding balance of debt instrument. Debt Instrument, Threshold Amount Over The Remaining Outstanding Balance Threshold amount of remaining outstanding balance of debt above which prepayment on the 2014 First Out Credit Agreement accelerates Debt Instrument, Periodic Payment, Principal Quarterly installment payment of Term Loan Amount of loan payments from the proceeds of non-core assets applied to principal. Debt Instrument, Principal Payment From Sale Of Assets Prepayment from proceeds of non-core asset sale Debt Instrument, Basis Spread on Variable Rate Interest rate added to variable rate basis (as a percent) Line of Credit Facility, Commitment Fee Percentage Commitment fees on unused portion of the Revolving Credit Facility Represents the maximum amount of unsecured senior notes or debt that the entity may repurchase under the credit agreement. Debt Instrument, Allowed Repurchased Face Amount, Unsecured Debt, Maximum Maximum principal amount of unsecured senior notes that may repurchase Represents the minimum percent of asset sale proceeds must be in cash. Debt Instrument Minimum Percentage of Asset Sale Proceeds Must Be In Cash Minimum percent of asset sale proceeds must be in cash Approval percentage measured by total exposure of lenders for approval of increases in borrowing base. Approval Percentage Measured By Total Exposure Of Lenders For Approval Of Increases In Borrowing Base Approval percentage measured by total exposure of lenders for approval of increases in borrowing base Approval percentage measured by total exposure of lenders for approval of decreases in borrowing base. Approval Percentage Measured By Total Exposure Of Lenders For Approval Of Decrease In Borrowing Base Approval percentage measured by total exposure of lenders for approval of decreases in borrowing base Represents the percent of commitment required to be held by lenders in order to request a special redetermination. Percent Of Commitment Required To Be Held By Lenders In Order To Request Special Redetermination Percent of commitment required to decrease or affirm the borrowing base Represents the number of consecutive scheduled redeterminations during which the reporting entity and the lenders may request for special redeterminations. Number Of Consecutive Scheduled Redeterminations Number of consecutive redeterminations Early Repayment of Senior Debt Prepayment of term loan Represents the amount of debt discount at the time of issuance. Debt Original Issue Discount Original issue discount Represents the floor rate of debt instrument. Debt Instrument, Floor Interest Rate Floor rate (as a percent) Represents the percentage of premium to par value of the debt. Debt Instrument, Percentage Of Premium To Par Value Percentage of premium to par value of coupon for make-whole premium The outstanding amount of certain notes that triggers the acceleration of the maturity of debt instrument under a credit agreement. Debt Instrument Covenant, Outstanding Amount, Maturity Trigger Outstanding amount that triggers accelerated payment Debt Instrument, Repurchased Face Amount Principal amount of debt reduction through payment or repurchase Debt Instrument, Repurchase Amount Repurchase value of the principal amounts Line of Credit Facility Financial performance covenants Period before maturity of the second debt 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. Period Before Maturity Of Second Debt, Maturity Of First Debt Period before maturity of the specified notes Represents Credit agreement leverage ratio Debt Instrument Covenant Consolidated Leverage Ratio Total leverage ratio Maximum trailing four quarter EBITDAX (the First-Lien First-Out Leverage Ratio) under a credit agreement. Debt Agreement Covenant Trailing Four Quarter Maximum Leverage Ratio, Debt To Earnings Before Interest, Taxes, Depreciation And Amortization First-Lien First-Out Leverage Ratio, maximum Represents the minimum interest expense coverage ratio as per the credit agreement. Debt Instrument Covenant, Minimum Interest Expense Coverage Ratio Minimum interest expense coverage ratio Represents the First-Lien Asset Coverage Ratio under credit facility agreement. Debt Instrument Covenant, Asset Coverage Ratio First-lien asset coverage ratio Amount of minimum monthly liquidity required to maintain as debt covenant. Debt Instrument Covenant Minimum Monthly Liquidity Minimum monthly liquidity Actual liquidity as of the reporting date. Actual Liquidity Available borrowing capacity Percent of net cash proceeds from asset monetization which must be used to repay Term Loan Debt agreement covenant Percent of proceeds from asset monetization which must be used to repay Term Loan Percent of net cash proceeds from asset sales which must be used (other than permitted development joint ventures and other transactions) to repay loans outstanding under the 2014 First-Out Credit Facilities Percent of net cash proceeds from non-borrowing base asset sales that may be used repurchase senior unsecured notes or second lien notes Debt agreement covenant Percent of proceeds from non-borrowing base asset sales that may be used repurchase senior unsecured notes or second lien notes Maximum percent of net cash proceeds from non-borrowing base asset sales that may be used to repurchase notes Represents the percentage of proceeds from non-borrowing base asset sales that may be used to repurchase debt if leverage ratio is less than 4:00 to 1:00. Debt Agreement Covenant Percent Of Proceeds From Non-Borrowing Base Asset Sales That May Be Used To Repurchase Debt If Leverage Ratio Is Less Than Threshold Limit Percentage of proceeds from non-borrowing base asset sales used to repurchase debt if leverage ratio is less than 4:00 to 1:00 Maximum additional borrowings that may be incurred outside of the credit facilities agreement Debt agreement covenant Maximum additional borrowings that may be incurred outside of the credit facilities agreement Maximum additional non-Credit Facility indebtedness Amount of cash on hand above which amounts owed under the Revolving Credit Facility must be repaid Debt agreement covenant Amount of cash on hand above which amounts owed under the Revolving Credit Facility must be repaid Amount of cash on hand above which amounts owed under the Revolving Credit Facility must be repaid Debt Instrument, Face Amount Aggregate principal amount issued Proceeds from Issuance of Private Placement Net proceeds from private placement Debt Conversion, Converted Instrument, Shares Issued Number of shares issued for converted debt Debt Conversion, Original Debt, Amount Original debt exchanged Percentage price of original principal amount of debt at which debt can be redeemed by the issuer in the event of change of control triggering event, as defined in the agreement. Debt Instrument, Redemption Price, Chang Of Control, Percentage Percentage of principal amount at which notes can be redeemed in case of change control Debt Instrument, Redemption Price, Percentage Percentage of principal amount at which notes can be redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Percentage of principal amount that may be redeemed Debt Instrument, Redemption Period, Start Date Redemption period start Redemption period end No definition available. Fair Value, Other Financial Instruments [Abstract] Other Fixed-Rate and Variable-Rate Debt Disclosures Long-term Debt, Fair Value Estimated fair value of long-term debt No definition available. Fair Value Other Variable Rate Financial Instruments Abstract Other Variable-Rate Debt Disclosures Represents the percentage of change in variable interest rate of debt during the period. Percentage Of Change In Variable Interest Rate Of Debt Percentage of change in the variable interest rates Represents the increase in annual interest expense due to 1/8 percent change in variable interest rate of debt during the period. Increase In Interest Expense Due To One By Eighth Percent Change In Interest Rate Effect of 1/8 percent change in annual interest expense Letters of Credit Outstanding, Amount Aggregate letters of credit issued Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree [Domain] Represents the information pertaining to joint venture with benefit street partners of divestitures and other. Joint Venture With Benefit Street Partners [Member] Joint venture with BSP Represents the information pertaining to joint venture with Macquarie Infrastructure and Real Assets Inc (MIRA). Joint Venture With Macquarie Infrastructure And Real Assets Inc [Member] Joint venture with MIRA Legal Entity [Axis] Entity [Domain] Entity [Domain] Represents Benefit Street Partners (BSP). Benefit Street Partners [Member] BSP Represents Macquarie Infrastructure and Real Assets Inc. (MIRA). Macquarie Infrastructure And Real Assets Inc [Member] MIRA Acquisition Proceeds from Sales of Assets, Investing Activities Proceeds from sale of non-core assets Represents the total maximum investment commitment in the joint venture. Total Investment Commitment in Joint Venture, Maximum Maximum investment commitment Payments to Acquire Interest in Joint Venture Commitment contributed Restricted Cash and Cash Equivalents Cash and cash equivalents designated for capital investments Working interest in exchange for an investment in a joint venture. Joint Venture, Working Interest Acquired Working interest acquired Percentage of funding provided to a joint venture to achieve its goals per agreement. Joint Venture Investment Funding Percentage Funding for development of properties (as a percent) The working interest that reverts to the entity when the targeted rate of return of the counterparty is achieved. Joint Venture, Working Interest After Counterparty Return Working interest after MIRA achieves it rate of return (as a percent) Represents the initial investment commitment in the joint venture. Initial Investment Commitment in Joint Venture Initial commitment Represents investment period for the initial commitment in a joint venture, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Joint Venture, Initial Investment, Investment Period Investment period of initial commitment Derivative Instruments and Hedging Activities Disclosures [Table] Information about the production period subject to hedge instruments. Hedge Production Periods [Axis] Identified production period subject to hedge instruments. Hedge Production Periods [Domain] Hedge Production Periods [Domain] Represents the entity's production from June Through December 2018. June Through December2018 Production [Member] June Through December 2018 Production Represents the entity's production from January Through December 2019. January Through December2019 Production [Member] January Through December 2019 Production Represents the entity's production from January Through December 2020. January Through December2020 Production [Member] January Through December 2020 Production Represents the entity's production from July through December 2017. July Through December2017 Production [Member] July Through December 2017 production Represents the entity's production during the second quarter of 2017. Second Quarter Production2017 [Member] Second Quarter 2017 Represents the entity's production during the third quarter of 2017. Third Quarter Production2017 [Member] Third Quarter 2017 Represents the entity's production during the fourth quarter of 2017. Fourth Quarter Production2017 [Member] Fourth Quarter 2017 Represents the entity's production during the first quarter of 2018. First Quarter Production2018 [Member] First Quarter 2018 Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivatives Derivative, Nonmonetary Notional Amount Daily Volume (in Bbl) Derivative, Average Price Risk Option Strike Price Weighted-average price (in dollars per barrel) Represents the maximum increase in counter-party option swaps per quarter. Counter Party Option Swaps, Increase Per Quarter, Maximum Maximum increase in volume per quarter of crude oil counter-party swaps (in barrels per day) The average strike price on the group of price risk option contracts such as put options or call options in the maximum increase in counter-party option swaps per quarter. Counter Party Option Swaps, Increase Per Quarter, Maximum, Average Price Risk Option Strike Price Weighted-average price (in dollars per barrel) Represents the maximum increase in counter-party option swaps for the period. Counter Party Option Swaps, Increase For The Period, Maximum Maximum increase in volume for the period of crude oil counterparties swaps (in barrels per day) The average strike price on the group of price risk option contracts such as put options or call options in the maximum increase in counter-party option swaps for the period. Counter Party Option Swaps, Increase For The Period, Maximum, Average Price Risk Option Strike Price Weighted-average strike price (in dollars per barrel) Offsetting Assets [Table] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Current Assets [Member] Other current assets Accrued Liabilities [Member] Accrued liabilities Offsetting Assets [Line Items] Fair Value of Derivatives Derivative Asset, Fair Value, Gross Asset Gross Amounts Recognized at Fair Value Derivative Asset, Fair Value, Gross Liability Gross Amounts Offset in the Balance Sheet Derivative Asset Net Fair Value Presented in the Balance Sheet Derivative Liability, Fair Value, Gross Liability Gross Amounts Recognized at Fair Value Derivative Liability, Fair Value, Gross Asset Gross Amounts Offset in the Balance Sheet Derivative Liability Net Fair Value Presented in the Balance Sheet Derivative Assets (Liabilities), at Fair Value, Net Total derivatives Debt Conversion [Table] Debt Conversion [Line Items] EARNINGS PER SHARE Stock Issued During Period, Shares, Employee Stock Purchase Plans Common stock issued in connection with employee stock purchase plan Basic Earnings Per Share Basic EPS calculation Undistributed Earnings Allocated to Participating Securities Less: net income (loss) allocated to participating securities Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) available to common stockholders Weighted Average Number of Shares Outstanding, Basic Weighed-average common shares outstanding - basic Earnings Per Share, Diluted [Abstract] Diluted EPS calculation Net Income (Loss) Available to Common Stockholders, Diluted Net income (loss) available to common stockholders Weighted Average Number Diluted Shares Outstanding Adjustment Dilutive effect of potentially dilutive securities Weighted Average Number of Shares Outstanding, Diluted Weighted-average common shares outstanding - diluted Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Pension Plans Defined Benefit [Member] Pension Benefit Other Postretirement Benefit Plans Defined Benefit [Member] Postretirement Benefit Defined Benefit Plan Disclosure [Line Items] Postretirement and Other Benefit Plans Disclosure Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Net periodic benefit costs: Defined Benefit Plan, Service Cost Service cost Defined Benefit Plan, Interest Cost Interest cost Defined Benefit Plan, Expected Return on Plan Assets Expected return on plan assets Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost Total Defined Benefit Plan, Contributions by Employer Employer contributions Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year Expected contribution to defined benefit pension plans during the reminder of 2017 Related Party [Axis] Related Party [Domain] Related Party [Domain] Represents information pertaining to occidental petroleum and subsidiaries. Occidental Petroleum And Subsidiaries [Member] Occidental Petroleum Other Noncurrent Liabilities [Member] Other long-term liabilities Debt Instrument [Axis] Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Secured Debt [Member] 2014 First Out Credit Facilities (Secured First Lien) Represents information pertaining to Secured First Lien Second Out Credit Agreement. Secured First Lien Second Out Credit Agreement [Member] 2016 Second Out Credit Agreement (Secured First Lien) Senior Lien [Member] Senior Notes (Secured Second Lien) Senior Notes [Member] Senior Unsecured Notes Represents the senior notes payable that bear an interest rate of 6.00 percent and will mature in 2024. Senior Notes600 Percent Due2024 [Member] 6% Notes Due 2024 Letter Of Credit [Member] Letter of Credit Represents information pertaining to senior term loan and senior revolving credit facility. Term Loan And Revolving Credit Facility [Member] Term loan and Revolving credit facility Debt Instrument, Redemption, Period [Axis] Debt Instrument Redemption Period [Domain] Debt Instrument, Redemption, Period [Domain] Debt Instrument Redemption Period One [Member] Prior to December 15, 2017, from proceeds of certain equity offerings Debt Instrument Redemption Period Two [Member] Prior to December 15, 2018 Debt Instrument Redemption Period Three [Member] On or after December 15, 2018 Debt Instrument Redemption Period Four [Member] 2019 Debt Instrument Redemption Period Five [Member] Thereafter Pro Forma [Member] Pro Forma Investment, Name [Axis] Equity Method Investee Name [Domain] Investment, Name [Domain] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Call Option [Member] Calls Put Option [Member] Puts Swap [Member] Swaps Products and Services [Axis] Products And Services [Domain] Products and Services [Domain] Crude Oil [Member] Crude Oil Measurement Basis [Axis] Portion At Fair Value Fair Value Disclosure [Member] Portion at Fair Value Measurement [Member] Carrying Reported Amount Fair Value Disclosure [Member] Presented in the Balance Sheet Estimate Of Fair Value Fair Value Disclosure [Member] Recognized Fair Value Commodity Contract [Member] Commodity Contracts Other Assets [Member] Other assets