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[Member] Midstream Services Segment [Member] WTI Magellan WTI Magellan [Member] WTI Magellan Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Jan. - Mar. Derivative Settlement, Year Two, January To March [Member] Derivative Settlement, Year Two, January To March Dividends declared per share (in USD per share) Common Stock, Dividends, Per Share, Declared Restricted cash Restricted Cash and Cash Equivalents, Current Aggregate principal amount Debt Instrument, Face Amount Level 2 Fair Value, Inputs, Level 2 [Member] Fair value measurement information for financial instruments measured on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Vesting [Axis] Vesting [Axis] Weighted Average Put Price (USD per Bbl) Derivative, Put Price Derivative, Put Price General and administrative expenses General and Administrative Expense [Member] Equity [Abstract] Equity [Abstract] Basis of Presentation Basis of Accounting [Text Block] Entity Central Index Key Entity Central Index Key Interest Rate Derivative, Fixed Interest Rate Revenues and royalties payable Contract with Customer, Liability, Current Entity Emerging Growth Company Entity Emerging Growth Company Subsequent Event [Line Items] Subsequent Event [Line Items] Accounts payable - trade Accounts Payable, Trade, Current Volume, energy measure (MMBtu) Derivative, Nonmonetary Notional Amount, Energy Measure Derivative Contract [Domain] Derivative Contract [Domain] Diluted (in shares) Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic (in USD per share) Basic net income attributable to common stock (in USD per share) Earnings Per Share, Basic Other income (expense): Other Income and Expenses [Abstract] Number of business segments Number of Operating Segments Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Debt Disclosure [Abstract] Debt Disclosure [Abstract] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term 3.250% Senior Notes due 2026 3.250% Senior Notes Due 2026 [Member] 3.250% Senior Notes Due 2026 [Member] Common stock, $0.01 par value; 200,000,000 shares authorized; 157,849,848 and 159,002,338 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively Common Stock, Value, Outstanding Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities General and administrative expenses Share-based Payment Arrangement, Expense Expandable amount Line of Credit Facility, Maximum Borrowing Capacity, Subject To Commitments Line of Credit Facility, Maximum Borrowing Capacity, Subject To Commitments Offsetting Assets [Line Items] Offsetting Assets [Line Items] Current maturities of long-term debt Current maturities of long-term debt Long-term Debt, Current Maturities Assets: Derivative Asset [Abstract] Accrued capital expenditures Accrued Capital Expenditures Accrued Capital Expenditures Position [Axis] Position [Axis] Less: accumulated depreciation Real Estate Owned, Accumulated Depreciation Subsequent Event [Table] Subsequent Event [Table] Weighted Average Floor Price (USD per Bbl) Derivative, Floor Price Exercise of stock and unit options and awards of restricted stock (in Shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Change in ownership of consolidated subsidiaries, net Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net Non-controlling interest Stockholders' Equity Attributable to Noncontrolling Interest Granted (in USD per share) Granted (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Oil and natural gas properties, amortization excluded Not subject to depletion Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative Gathering and transportation Natural Gas, Gathering, Transportation, Marketing and Processing [Member] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Shares Issued (in Shares) Common Stock, Shares, Issued Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Energen Corporation Merger Energen Corporation Acquisition [Member] Energen Corporation Acquisition [Member] Present value of lease liabilities Operating Lease, Liability Viper revolving credit facility Viper Credit Facility [Member] Revolving credit facility entered into by Viper Energy Partners, LP, a subsidiary of the reporting entity. Long-term debt Long-term Debt, Excluding Current Maturities Segment Reporting [Abstract] Segment Reporting [Abstract] Redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Acquisitions of mineral interests Payments to Acquire Mineral Rights Accounts receivable Increase (Decrease) in Accounts Receivable Debt Instrument [Line Items] Debt Instrument [Line Items] Total Diamondback Energy, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Public offering costs Payments of Stock Issuance Costs Business combination, total consideration Business Combination, Consideration Transferred Area of land (in acre) Area of Land Total liabilities and equity Liabilities and Equity Buildings Buildings and Improvements, Gross Number of shares to be issued in acquisition (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Other property, equipment and land Property, Plant and Equipment, Other, Gross Share based compensation arrangement by share based payment maximum award potential (in shares) Share Based Compensation Arrangement by Share Based Payment Maximum Award Potential The maximum number of shares that can be awarded assuming maximum performance earned. INCOME TAXES Income Tax Disclosure [Text Block] Oil sales Oil Income [Member] Oil Income Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Brent Brent [Member] Brent Incremental compensation Share-based Payment Arrangement, Plan Modification, Incremental Cost Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Operating lease costs Operating Lease, Cost Financial Instrument [Axis] Financial Instrument [Axis] Rattler 5.625% Senior Notes due 2025 5.625% Senior Notes Due 2025 [Member] 5.625% Senior Notes Due 2025 Restricted stock units (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Rattler Midstream LP Long-Term Incentive Plan Rattler Midstream LP Long-Term Incentive Plan [Member] Rattler Midstream LP Long-Term Incentive Plan [Member] Equity Component [Domain] Equity Component [Domain] Derivative instruments Derivative instruments Derivative Asset, Noncurrent Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two REAL ESTATE ASSETS Real Estate Disclosure [Text Block] Property and equipment, net Property, Plant and Equipment, Net Revenue from Contracts with Customers Revenue from Contract with Customer [Policy Text Block] Interest expense, net Interest Income (Expense), Nonoperating, Net Interest rate swaps Interest Rate Contract [Member] EQUITY-BASED COMPENSATION Share-based Payment Arrangement [Text Block] Net income (loss) attributable to Diamondback Energy, Inc. Net income (loss) attributable to common stock Net income (loss) attributable to the Company Net Income (Loss) Attributable to Parent Entity Address, State or Province Entity Address, State or Province 2020 (October - December) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Distributions to non-controlling interest Payments to Noncontrolling Interests Investment, Name [Domain] Investment, Name [Domain] Unamortized premium costs Debt Instrument, Unamortized Premium Leases [Abstract] Leases [Abstract] General partners cash contribution General Partners' Contributed Capital Waha Hub Waha Hub [Member] Waha Hub Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Assets, Current Unit-based compensation Noncontrolling Interest, Increase from Unit-based Compensation Noncontrolling Interest, Increase from Unit-based Compensation Earnings (loss) per common share: Earnings Per Share [Abstract] Option price (per Mcf) Derivative, Option Price Derivative, Option Price Swap Double-Up Swap Double-Up [Member] Swap Double-Up Put Spread Put Spread [Member] Put Spread Other income, net Other Nonoperating Income Depreciation, depletion and amortization Depreciation, Depletion and Amortization Excluding Amortization of Financing Costs Depreciation, Depletion and Amortization Excluding Amortization of Financing Costs Net proceeds from issuance of common units Noncontrolling Interest, Increase from Subsidiary Equity Issuance Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Timing of inclusion of costs in amortization calculation Timing Of Inclusion Of Costs In Amortization Calculation The period of time over which it is anticipated that unevaluated costs will be included in the amortization base of oil and gas properties. Entity Interactive Data Current Entity Interactive Data Current Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Lease bonus Lease bonus Amount received to extend the lease term. 2022 Derivative Settlement, Year Three [Member] Derivative Settlement, Year Three Cumulative percentage of certain payout thresholds Cumulative Percentage Of Certain Payout Thresholds Cumulative Percentage Of Certain Payout Thresholds Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Total Gross Fair Value Derivative Liability, Fair Value, Gross Liability, Noncurrent Derivative Liability, Fair Value, Gross Liability, Noncurrent Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 2020 Derivative Settlement, Year One [Member] Derivative Settlement, Year One The effects of stock-based compensation plans and related costs Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Common Stock Common Stock [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Product and Service [Domain] Product and Service [Domain] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Number of letters of credit outstanding Number Of Letters Of Credit Outstanding Number Of Letters Of Credit Outstanding Schedule of real estate assets Real Estate Investment Financial Statements, Disclosure [Table Text Block] Schedule of property and equipment Property, Plant and Equipment [Table Text Block] Basis Swaps Basis Swap [Member] Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Tenant improvements Leasehold Improvements [Member] Oil and natural gas properties: Oil and Gas Property [Abstract] Amarillo Rattler, LLC Amarillo Rattler, LLC [Member] Amarillo Rattler, LLC [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Debt instrument stated interest rate Debt Instrument, Interest Rate, Stated Percentage Accumulated depletion, depreciation, amortization and impairment Accumulated depletion and depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Diluted: Earnings Per Share, Diluted [Abstract] Change from net income (loss) attributable to the Company's stockholders and transfers to non-controlling interest Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net Weighted average rate Long-term Debt, Weighted Average Interest Rate, over Time Midstream services Natural Gas, Midstream [Member] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Total other income (expense), net Nonoperating Income (Expense) Phantom units activity Schedule of Nonvested Share Activity [Table Text Block] NATURAL GAS LIQUIDS Natural Gas Liquids [Member] Schedule of undiscounted cash flows owned by company to lessors pursuant to contractual agreements Lessee, Operating Lease, Liability, Maturity [Table Text Block] Oil and natural gas properties, net Capitalized Costs, Oil and Gas Producing Activities, Net Proceeds from divestiture Proceeds from Sale of Oil and Gas Property and Equipment Basic (in shares) Basic weighted average common units outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Costs and expenses: Costs and Expenses [Abstract] Risk-free rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Subsequent Events [Abstract] Subsequent Events [Abstract] Ownership [Axis] Ownership [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Ownership [Domain] Ownership [Domain] Reported Value Measurement Reported Value Measurement [Member] Plan Name [Domain] Plan Name [Domain] Equity method interest investment ownership percentage Equity Method Investment, Ownership Percentage REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from Contract with Customer [Text Block] Interest paid, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activities Total equity Balance at beginning of period Balance at end of period Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Additional amount of operating lease right of use asset recorded Right-of-Use Asset Obtained in Exchange for Operating Lease Liability DIESEL Diesel [Member] Diesel Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Asset retirement obligations Schedule of Asset Retirement Obligations [Table Text Block] Debt, fair value Long-term Debt, Fair Value Total revenues Total revenues Revenues Class of Stock [Axis] Class of Stock [Axis] Cash received on contract Derivative, Cash Received on Hedge Schedule of derivative contracts Schedule of derivative contracts by Company subsequent aggregating weighted average contract Schedule of Derivative Instruments [Table Text Block] Provision for (benefit from) income taxes Provision for (benefit from) income taxes Income Tax Expense (Benefit) Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents DrillCo Agreement DrillCo Agreement [Member] DrillCo Agreement Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Accumulated impairment Capitalized Costs Accumulated Impairment Capitalized costs of accumulated impairment for oil and natural gas properties Diluted (in USD per share) Diluted net income attributable to common stock (in USD per share) Earnings Per Share, Diluted Interest Rate Swap Three Interest Rate Swap Three [Member] Interest Rate Swap Three [Member] Payment to acquire businesses Payments to Acquire Businesses, Gross Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Tranche One Share-based Payment Arrangement, Tranche One [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Derivative [Line Items] Derivative [Line Items] Accounts receivable: Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Percentage of preferred cash distribution received General Partners' Capital Account, Percentage Of Preferred Cash Distribution Received General Partners' Capital Account, Percentage Of Preferred Cash Distribution Received Midstream assets Pipeline and Gas Gathering Assets Pipeline and Gas Gathering Assets Outstanding borrowings on revolving credit facility Outstanding borrowings Long-term Debt, Gross Distance of gathering and regional transportation pipelines Distance Of Gathering And Regional Transportation Pipelines Distance Of Gathering And Regional Transportation Pipelines Schedule of long-term debt Schedule of Long-term Debt Instruments [Table Text Block] 2019 Drop-Down Transaction 2019 Drop-Down Acquisition [Member] 2019 Drop-Down Acquisition [Member] Energy [Domain] Energy [Domain] Net cash received (paid) on settlements Gain (Loss) on Sale of Derivatives NATURAL GAS Natural Gas [Member] Provision for (benefit from) deferred income taxes Deferred Income Tax Expense (Benefit) Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Wells drilled and completed under joint venture agreement Oil and Gas, Exploratory Well Drilled, Net Productive, Number Weighted Average Grant-Date Fair Value Weighted Average Exercise Price (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Ceiling Price (USD per Bbl) Derivative, Cap Price Aggregated fair value of restricted stock Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Maximum Maximum [Member] Security Exchange Name Security Exchange Name Limited partners' capital account, units issued (in Shares) Limited Partners' Capital Account, Units Issued Non-Controlling Interest Noncontrolling Interest [Member] Swaption Swaption [Member] Gain (loss) on revaluation of investment Gain (Loss) on Investments Dividend paid Dividends, Common Stock, Cash Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Measurement Basis [Axis] Measurement Basis [Axis] Distribution equivalent rights Payments of Distributions to Affiliates Delaware Basin Delaware Basin [Member] Delaware Basin Fair value of assets and liabilities measured on a recurring and nonrecurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Drilling, completions and non-operated additions to oil and natural gas properties Payments to Explore and Develop Oil and Gas Properties Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Gulf Cost Ultra Low Sulfur Gulf Cost Ultra Low Sulfur [Member] Gulf Cost Ultra Low Sulfur Award Type [Domain] Award Type [Domain] Offsetting Liabilities Offsetting Liabilities [Table Text Block] Document Transition Report Document Transition Report Number of redeterminations Line of Credit Facility, Borrowing Base, Number of Redeterminations Line of Credit Facility, Borrowing Base, Number of Redeterminations 2.875% Senior Notes due 2024 2.875% Senior Notes due 2024 [Member] 2.875% Senior Notes due 2024 [Member] Liabilities acquired Asset Retirement Obligation, Liabilities Acquired The increase in asset retirement obligations related to properties acquired. PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Asset Retirement Obligation [Abstract] Asset Retirement Obligation [Abstract] Natural gas liquid sales Natural Gas Liquids Income [Member] Natural Gas Liquids Income Joint interest and other, net Oil and Gas Joint Interest Billing Receivables, Current Mar. - June Derivative Settlement, Year Two, March To June [Member] Derivative Settlement, Year Two, March To June Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities: Liabilities, Current [Abstract] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] 7.350% Medium-term Notes, Series A, due 2027 7.35% Medium Term Notes Series A [Member] 7.35% Medium Term Notes Series A [Member] Asset retirement obligation accretion Asset retirement obligation accretion Asset Retirement Obligation, Accretion Expense Recurring Fair Value, Recurring [Member] Total investment in land and buildings, net Real Estate Investment Property, Net New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Proceeds from borrowings under credit facility Proceeds from Lines of Credit Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basic: Earnings Per Share, Basic [Abstract]