3.19.3 html 491 429 1 false 110 0 false 10 false false R1.htm 0001001 - Document - Cover Page Sheet http://www.oasispetroleum.com/role/CoverPage Cover Page Cover 1 false false R2.htm 1001002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 1002003 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - Condensed Consolidated Statements of Operations (Unaudited) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatedStatementsofOperationsUnaudited Condensed Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 1004005 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatedStatementsofChangesinStockholdersEquityUnaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Statements 5 false false R6.htm 1005006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 2101101 - Disclosure - Organization and Operations of the Company Sheet http://www.oasispetroleum.com/role/OrganizationandOperationsoftheCompany Organization and Operations of the Company Notes 7 false false R8.htm 2102102 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 2106103 - Disclosure - Oasis Midstream Partners Sheet http://www.oasispetroleum.com/role/OasisMidstreamPartners Oasis Midstream Partners Notes 9 false false R10.htm 2108104 - Disclosure - Revenue Recognition Sheet http://www.oasispetroleum.com/role/RevenueRecognition Revenue Recognition Notes 10 false false R11.htm 2112105 - Disclosure - Inventory Sheet http://www.oasispetroleum.com/role/Inventory Inventory Notes 11 false false R12.htm 2115106 - Disclosure - Accounts Receivable Sheet http://www.oasispetroleum.com/role/AccountsReceivable Accounts Receivable Notes 12 false false R13.htm 2118107 - Disclosure - Fair Value Measurements Sheet http://www.oasispetroleum.com/role/FairValueMeasurements Fair Value Measurements Notes 13 false false R14.htm 2122108 - Disclosure - Derivative Instruments Sheet http://www.oasispetroleum.com/role/DerivativeInstruments Derivative Instruments Notes 14 false false R15.htm 2127109 - Disclosure - Property, Plant and Equipment Sheet http://www.oasispetroleum.com/role/PropertyPlantandEquipment Property, Plant and Equipment Notes 15 false false R16.htm 2131110 - Disclosure - Divestitures and Assets Held for Sale Sheet http://www.oasispetroleum.com/role/DivestituresandAssetsHeldforSale Divestitures and Assets Held for Sale Notes 16 false false R17.htm 2135111 - Disclosure - Long-Term Debt Sheet http://www.oasispetroleum.com/role/LongTermDebt Long-Term Debt Notes 17 false false R18.htm 2139112 - Disclosure - Asset Retirement Obligations Sheet http://www.oasispetroleum.com/role/AssetRetirementObligations Asset Retirement Obligations Notes 18 false false R19.htm 2143113 - Disclosure - Income Taxes Sheet http://www.oasispetroleum.com/role/IncomeTaxes Income Taxes Notes 19 false false R20.htm 2145114 - Disclosure - Equity-Based Compensation Sheet http://www.oasispetroleum.com/role/EquityBasedCompensation Equity-Based Compensation Notes 20 false false R21.htm 2149115 - Disclosure - Earnings (Loss) Per Share Sheet http://www.oasispetroleum.com/role/EarningsLossPerShare Earnings (Loss) Per Share Notes 21 false false R22.htm 2153116 - Disclosure - Business Segment Information Sheet http://www.oasispetroleum.com/role/BusinessSegmentInformation Business Segment Information Notes 22 false false R23.htm 2157117 - Disclosure - Leases Sheet http://www.oasispetroleum.com/role/Leases Leases Notes 23 false false R24.htm 2166118 - Disclosure - Commitments and Contingencies Sheet http://www.oasispetroleum.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 24 false false R25.htm 2168119 - Disclosure - Condensed Consolidating Financial Information Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformation Condensed Consolidating Financial Information Notes 25 false false R26.htm 2174120 - Disclosure - Subsequent Events Sheet http://www.oasispetroleum.com/role/SubsequentEvents Subsequent Events Notes 26 false false R27.htm 2203201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPolicies 27 false false R28.htm 2304301 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPolicies 28 false false R29.htm 2309302 - Disclosure - Revenue Recognition (Tables) Sheet http://www.oasispetroleum.com/role/RevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.oasispetroleum.com/role/RevenueRecognition 29 false false R30.htm 2313303 - Disclosure - Inventory (Tables) Sheet http://www.oasispetroleum.com/role/InventoryTables Inventory (Tables) Tables http://www.oasispetroleum.com/role/Inventory 30 false false R31.htm 2316304 - Disclosure - Accounts Receivable (Tables) Sheet http://www.oasispetroleum.com/role/AccountsReceivableTables Accounts Receivable (Tables) Tables http://www.oasispetroleum.com/role/AccountsReceivable 31 false false R32.htm 2319305 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.oasispetroleum.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.oasispetroleum.com/role/FairValueMeasurements 32 false false R33.htm 2323306 - Disclosure - Derivative Instruments (Tables) Sheet http://www.oasispetroleum.com/role/DerivativeInstrumentsTables Derivative Instruments (Tables) Tables http://www.oasispetroleum.com/role/DerivativeInstruments 33 false false R34.htm 2328307 - Disclosure - Property, Plant and Equipment (Tables) Sheet http://www.oasispetroleum.com/role/PropertyPlantandEquipmentTables Property, Plant and Equipment (Tables) Tables http://www.oasispetroleum.com/role/PropertyPlantandEquipment 34 false false R35.htm 2332308 - Disclosure - Discontinued Operations and Disposal Groups (Tables) Sheet http://www.oasispetroleum.com/role/DiscontinuedOperationsandDisposalGroupsTables Discontinued Operations and Disposal Groups (Tables) Tables 35 false false R36.htm 2336309 - Disclosure - Long-Term Debt (Tables) Sheet http://www.oasispetroleum.com/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://www.oasispetroleum.com/role/LongTermDebt 36 false false R37.htm 2340310 - Disclosure - Asset Retirement Obligations (Tables) Sheet http://www.oasispetroleum.com/role/AssetRetirementObligationsTables Asset Retirement Obligations (Tables) Tables http://www.oasispetroleum.com/role/AssetRetirementObligations 37 false false R38.htm 2346311 - Disclosure - Equity-Based Compensation (Tables) Sheet http://www.oasispetroleum.com/role/EquityBasedCompensationTables Equity-Based Compensation (Tables) Tables http://www.oasispetroleum.com/role/EquityBasedCompensation 38 false false R39.htm 2350312 - Disclosure - Earnings (Loss) Per Share (Tables) Sheet http://www.oasispetroleum.com/role/EarningsLossPerShareTables Earnings (Loss) Per Share (Tables) Tables http://www.oasispetroleum.com/role/EarningsLossPerShare 39 false false R40.htm 2354313 - Disclosure - Business Segment Information (Tables) Sheet http://www.oasispetroleum.com/role/BusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.oasispetroleum.com/role/BusinessSegmentInformation 40 false false R41.htm 2358314 - Disclosure - Leases (Tables) Sheet http://www.oasispetroleum.com/role/LeasesTables Leases (Tables) Tables http://www.oasispetroleum.com/role/Leases 41 false false R42.htm 2369315 - Disclosure - Condensed Consolidating Financial Information (Tables) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationTables Condensed Consolidating Financial Information (Tables) Tables http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformation 42 false false R43.htm 2405401 - Disclosure - Summary of Significant Accounting Policies - Impacts of Revisions to the Company???s Condensed Consolidated Statement of Operations (Details) Sheet http://www.oasispetroleum.com/role/SummaryofSignificantAccountingPoliciesImpactsofRevisionstotheCompanysCondensedConsolidatedStatementofOperationsDetails Summary of Significant Accounting Policies - Impacts of Revisions to the Company???s Condensed Consolidated Statement of Operations (Details) Details 43 false false R44.htm 2407402 - Disclosure - Oasis Midstream Partners (Details) Sheet http://www.oasispetroleum.com/role/OasisMidstreamPartnersDetails Oasis Midstream Partners (Details) Details http://www.oasispetroleum.com/role/OasisMidstreamPartners 44 false false R45.htm 2410403 - Disclosure - Revenue Recognition - Disaggregated Revenue (Details) Sheet http://www.oasispetroleum.com/role/RevenueRecognitionDisaggregatedRevenueDetails Revenue Recognition - Disaggregated Revenue (Details) Details 45 false false R46.htm 2411404 - Disclosure - Revenue Recognition - Remaining Performance Obligation (Details) Sheet http://www.oasispetroleum.com/role/RevenueRecognitionRemainingPerformanceObligationDetails Revenue Recognition - Remaining Performance Obligation (Details) Details 46 false false R47.htm 2414405 - Disclosure - Inventory- Schedule of Inventory (Details) Sheet http://www.oasispetroleum.com/role/InventoryScheduleofInventoryDetails Inventory- Schedule of Inventory (Details) Details 47 false false R48.htm 2417406 - Disclosure - Accounts Receivable (Details) Sheet http://www.oasispetroleum.com/role/AccountsReceivableDetails Accounts Receivable (Details) Details http://www.oasispetroleum.com/role/AccountsReceivableTables 48 false false R49.htm 2420407 - Disclosure - Fair Value Measurements - Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) Sheet http://www.oasispetroleum.com/role/FairValueMeasurementsHierarchyofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails Fair Value Measurements - Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) Details 49 false false R50.htm 2421408 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/FairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 50 false false R51.htm 2424409 - Disclosure - Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) Sheet http://www.oasispetroleum.com/role/DerivativeInstrumentsScheduleofOutstandingCommodityDerivativeInstrumentsDetails Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) Details 51 false false R52.htm 2425410 - Disclosure - Derivative Instruments - Realized and Unrealized Gains and Losses from Commodity Derivative Instruments (Details) Sheet http://www.oasispetroleum.com/role/DerivativeInstrumentsRealizedandUnrealizedGainsandLossesfromCommodityDerivativeInstrumentsDetails Derivative Instruments - Realized and Unrealized Gains and Losses from Commodity Derivative Instruments (Details) Details 52 false false R53.htm 2426411 - Disclosure - Derivative Instruments - Schedule of Location and Fair Value of Outstanding Commodity Derivative Instruments (Details) Sheet http://www.oasispetroleum.com/role/DerivativeInstrumentsScheduleofLocationandFairValueofOutstandingCommodityDerivativeInstrumentsDetails Derivative Instruments - Schedule of Location and Fair Value of Outstanding Commodity Derivative Instruments (Details) Details 53 false false R54.htm 2429412 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) Sheet http://www.oasispetroleum.com/role/PropertyPlantandEquipmentScheduleofPropertyPlantandEquipmentDetails Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) Details 54 false false R55.htm 2430413 - Disclosure - Property, Plant and Equipment - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/PropertyPlantandEquipmentAdditionalInformationDetails Property, Plant and Equipment - Additional Information (Details) Details 55 false false R56.htm 2433414 - Disclosure - Divestitures and Assets Held for Sale (Details) Sheet http://www.oasispetroleum.com/role/DivestituresandAssetsHeldforSaleDetails Divestitures and Assets Held for Sale (Details) Details http://www.oasispetroleum.com/role/DivestituresandAssetsHeldforSale 56 false false R57.htm 2434415 - Disclosure - Discontinued Operations and Disposal Groups - Balance Sheet Data Related to Assets and Liabilities Held for Sale (Details) Sheet http://www.oasispetroleum.com/role/DiscontinuedOperationsandDisposalGroupsBalanceSheetDataRelatedtoAssetsandLiabilitiesHeldforSaleDetails Discontinued Operations and Disposal Groups - Balance Sheet Data Related to Assets and Liabilities Held for Sale (Details) Details 57 false false R58.htm 2437416 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details) Sheet http://www.oasispetroleum.com/role/LongTermDebtScheduleofLongTermDebtDetails Long-Term Debt - Schedule of Long-Term Debt (Details) Details 58 false false R59.htm 2438417 - Disclosure - Long-Term Debt - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/LongTermDebtAdditionalInformationDetails Long-Term Debt - Additional Information (Details) Details 59 false false R60.htm 2441418 - Disclosure - Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligations (Details) Sheet http://www.oasispetroleum.com/role/AssetRetirementObligationsScheduleofChangesinAssetRetirementObligationsDetails Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligations (Details) Details 60 false false R61.htm 2442419 - Disclosure - Asset Retirement Obligations - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/AssetRetirementObligationsAdditionalInformationDetails Asset Retirement Obligations - Additional Information (Details) Details 61 false false R62.htm 2444420 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/IncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 62 false false R63.htm 2447421 - Disclosure - Equity-Based Compensation - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/EquityBasedCompensationAdditionalInformationDetails Equity-Based Compensation - Additional Information (Details) Details 63 false false R64.htm 2448422 - Disclosure - Equity-Based Compensation - Summary of Assumptions (Details) Sheet http://www.oasispetroleum.com/role/EquityBasedCompensationSummaryofAssumptionsDetails Equity-Based Compensation - Summary of Assumptions (Details) Details 64 false false R65.htm 2451423 - Disclosure - Earnings (Loss) Per Share - Schedule of Weighted-Average Number of Shares Outstanding (Details) Sheet http://www.oasispetroleum.com/role/EarningsLossPerShareScheduleofWeightedAverageNumberofSharesOutstandingDetails Earnings (Loss) Per Share - Schedule of Weighted-Average Number of Shares Outstanding (Details) Details http://www.oasispetroleum.com/role/EarningsLossPerShareTables 65 false false R66.htm 2452424 - Disclosure - Earnings (Loss) Per Share - Schedule of Common Shares Excluded from Diluted Earnings (Loss) per Share (Details) Sheet http://www.oasispetroleum.com/role/EarningsLossPerShareScheduleofCommonSharesExcludedfromDilutedEarningsLossperShareDetails Earnings (Loss) Per Share - Schedule of Common Shares Excluded from Diluted Earnings (Loss) per Share (Details) Details http://www.oasispetroleum.com/role/EarningsLossPerShareTables 66 false false R67.htm 2455425 - Disclosure - Business Segment Information - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/BusinessSegmentInformationAdditionalInformationDetails Business Segment Information - Additional Information (Details) Details 67 false false R68.htm 2456426 - Disclosure - Business Segment Information - Summarized Financial Information of Segments (Details) Sheet http://www.oasispetroleum.com/role/BusinessSegmentInformationSummarizedFinancialInformationofSegmentsDetails Business Segment Information - Summarized Financial Information of Segments (Details) Details 68 false false R69.htm 2459427 - Disclosure - Leases - Narrative (Details) Sheet http://www.oasispetroleum.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 69 false false R70.htm 2460428 - Disclosure - Leases - Components of lease expense (Details) Sheet http://www.oasispetroleum.com/role/LeasesComponentsofleaseexpenseDetails Leases - Components of lease expense (Details) Details 70 false false R71.htm 2461429 - Disclosure - Leases - Maturities of the Company's lease liabilities (Details) Sheet http://www.oasispetroleum.com/role/LeasesMaturitiesoftheCompanysleaseliabilitiesDetails Leases - Maturities of the Company's lease liabilities (Details) Details 71 false false R72.htm 2462430 - Disclosure - Leases - Schedule of future minimum annual rental commitments (Details) Sheet http://www.oasispetroleum.com/role/LeasesScheduleoffutureminimumannualrentalcommitmentsDetails Leases - Schedule of future minimum annual rental commitments (Details) Details 72 false false R73.htm 2463431 - Disclosure - Leases - Supplemental balance sheet information (Details) Sheet http://www.oasispetroleum.com/role/LeasesSupplementalbalancesheetinformationDetails Leases - Supplemental balance sheet information (Details) Details 73 false false R74.htm 2464432 - Disclosure - Leases - Schedule of supplemental cash flow information and non-cash transactions related to Company's leases (Details) Sheet http://www.oasispetroleum.com/role/LeasesScheduleofsupplementalcashflowinformationandnoncashtransactionsrelatedtoCompanysleasesDetails Leases - Schedule of supplemental cash flow information and non-cash transactions related to Company's leases (Details) Details 74 false false R75.htm 2465433 - Disclosure - Leases - Weighted-average remaining lease term and discount rate for the Company???s leases (Details) Sheet http://www.oasispetroleum.com/role/LeasesWeightedaverageremainingleasetermanddiscountratefortheCompanysleasesDetails Leases - Weighted-average remaining lease term and discount rate for the Company???s leases (Details) Details 75 false false R76.htm 2467434 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/CommitmentsandContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 76 false false R77.htm 2470435 - Disclosure - Condensed Consolidating Financial Information - Additional Information (Details) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationAdditionalInformationDetails Condensed Consolidating Financial Information - Additional Information (Details) Details 77 false false R78.htm 2471436 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet (Details) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleofCondensedConsolidatingBalanceSheetDetails Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet (Details) Details 78 false false R79.htm 2472437 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Details) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleofCondensedConsolidatingStatementofOperationsDetails Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Details) Details 79 false false R80.htm 2473438 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Details) Sheet http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleofCondensedConsolidatingStatementofCashFlowsDetails Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Details) Details 80 false false All Reports Book All Reports oas-20190930.htm oas-20190930.xsd oas-20190930_cal.xml oas-20190930_def.xml oas-20190930_lab.xml oas-20190930_pre.xml oas-ex102xthirdamendme.htm oas-ex311x9302019xq33q.htm oas-ex312x9302019xq33q.htm oas-ex321x9302019xq33q.htm oas-ex322x9302019xq33q.htm http://fasb.org/srt/2019-01-31 http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/dei/2019-01-31 http://xbrl.sec.gov/exch/2019-01-31 true true