Derivate Asset, Annual Increase In Commodity Prices

No definition available.

Name:	oas_DerivateAssetAnnualIncreaseInCommodityPrices
Namespace Prefix:	oas_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Extinguishment Of Debt, Accrued Interest, Amount

+ References

No definition available.

+ Details

Name:	oas_ExtinguishmentOfDebtAccruedInterestAmount
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fresh Start Accounting [Line Items]

+ References

No definition available.

+ Details

Name:	oas_FreshStartAccountingLineItems
Namespace Prefix:	oas_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Oil and Gas Properties, Measurement Input

+ References

No definition available.

+ Details

Name:	oas_OilAndGasPropertiesMeasurementInput
Namespace Prefix:	oas_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Reorganization Value, Deferred Financing Costs

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueDeferredFinancingCosts
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reorganization Value, Fair Value Method, Exercise Price of Warrants or Rights

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueFairValueMethodExercisePriceOfWarrantsOrRights
Namespace Prefix:	oas_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Reorganization Value, Liabilities Subject To Compromise, Accounts Payable

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueLiabilitiesSubjectToCompromiseAccountsPayable
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reorganization Value, Percentage of Voting Interest Received

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValuePercentageOfVotingInterestReceived
Namespace Prefix:	oas_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Reorganization Value, Post-Petition Liabilities And Allowed Claims

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValuePostPetitionLiabilitiesAndAllowedClaims
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reorganization Value, Reclassification Of Payable For Vested Awards

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueReclassificationOfPayableForVestedAwards
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reorganization Value, Related to Successor Assets

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueRelatedToSuccessorAssets
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reorganization Value, Restricted Cash

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueRestrictedCash
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reorganization Value, Restricted Cash Attributable to Related Party

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueRestrictedCashAttributableToRelatedParty
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reorganization Value, Restricted Cash Related To Professional Fees

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueRestrictedCashRelatedToProfessionalFees
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reorganization Value, Write Off Of Deferred Financing Costs

+ References

No definition available.

+ Details

Name:	oas_ReorganizationValueWriteOffOfDeferredFinancingCosts
Namespace Prefix:	oas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount debtor-in-possession financing arranged (but not necessarily all borrowed).

+ References

No definition available.

+ Details

Name:	us-gaap_DebtorInPossessionFinancingAmountArranged
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeCapPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69F
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69E
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1F
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611

+ Details

Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount attributed to the reconstituted entity, as well as the expected net realizable value of those assets that will be disposed before reconstitution occurs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 05
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=49179835&loc=d3e54813-112758

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56239-112766

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

+ Details

Name:	us-gaap_ReorganizationValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_OwnershipAxis=oas_BobcatDevCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=oas_OMSHoldingsLLCOMSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=oas_BeartoothDevCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=oas_OasisCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oas_ExplorationAndProductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_EnergyAxis=srt_CrudeOilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_EnergyAxis=srt_NaturalGasReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=oas_SeniorSecuredSuperpriorityDebtorInPossessionRevolvingCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=oas_SeniorSecuredRevolvingLineofCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ValuationTechniqueAxis=us-gaap_ValuationTechniqueDiscountedCashFlowMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=oas_MeasurementInputMarketBasedWeightedAverageCostOfCapitalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=oas_ProvedOilAndGasPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oas_BeartoothDevCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oas_BobcatDevCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fresh Start Accounting - Additional Information (Details) $ / shares in Units, $ in Thousands		11 Months Ended
	Nov. 19, 2020 USD ($) $ / shares shares	Nov. 19, 2020 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / MMcf $ / bbl	Oct. 21, 2021	Mar. 31, 2020	Dec. 31, 2019
Fresh Start Accounting [Line Items]
Percentage of voting interest received	50.00%	50.00%
Reorganization value of Successor assets	$ 2,237,991	$ 2,237,991
Post-petition liabilities and allowed claims	3,200,000	3,200,000
Reorganization value	1,300,000	1,300,000
Cash attributable to OMP	4,500	4,500
Restricted cash	1,400	1,400
Restricted cash related to professional fees	10,400	10,400
Reorganization Value, Write Off Of Deferred Financing Costs		200
Liabilities subject to compromise, accounts payable	19,900	19,900
Reorganization Value, Reclassification Of Payable For Vested Awards	1,913	$ 1,913
Write-off of Specified Default Interest	$ 28,000
Warrants to purchase of number of shares (in shares) \| shares	1,621,622	1,621,622
Fair value assumptions exercise price of warrants \| $ / shares	$ 14.68	$ 14.68
Aggregate principal amount arranged	$ 20,600	$ 20,600
Bobcat DevCo \| OMS Holdings LLC (“OMS”)
Fresh Start Accounting [Line Items]
Ownership interest (percent)						64.70%
Beartooth DevCo \| OMS Holdings LLC (“OMS”)
Fresh Start Accounting [Line Items]
Ownership interest (percent)			30.00%
Oasis Credit Facility
Fresh Start Accounting [Line Items]
Deferred financing costs	7,300	$ 7,300
E&P
Fresh Start Accounting [Line Items]
Increase in commodity prices			2.00%
E&P \| Crude oil
Fresh Start Accounting [Line Items]
Derivative, cap price \| $ / bbl			75
E&P \| Natural gas
Fresh Start Accounting [Line Items]
Derivative, cap price \| $ / MMcf			4.80
Revolving credit facility \| Line of credit
Fresh Start Accounting [Line Items]
Write-off of Specified Default Interest	30,300
Revolving credit facility \| DIP Credit Facility \| Line of credit
Fresh Start Accounting [Line Items]
Extinguishment of debt	300,000
Accrued interest	1,400
Revolving credit facility \| Oasis Credit Facility \| Line of credit
Fresh Start Accounting [Line Items]
Extinguishment of debt	60,600
Accrued interest	$ 800
Discounted Cash Flow \| Market-based Weighted Average Cost of Capital
Fresh Start Accounting [Line Items]
Estimated future cash flows, measurement input (percent)				11.00%
Proved Oil and Gas Properties \| Discounted Cash Flow \| Market-based Weighted Average Cost of Capital
Fresh Start Accounting [Line Items]
Estimated future cash flows, measurement input (percent)					12.70%
Proved Oil and Gas Properties \| Discounted Cash Flow \| Market-based Weighted Average Cost of Capital \| E&P
Fresh Start Accounting [Line Items]
Estimated future cash flows, measurement input (percent)	11.00%	11.00%
Proved Oil and Gas Properties \| Discounted Cash Flow \| Market-based Weighted Average Cost of Capital \| Beartooth DevCo
Fresh Start Accounting [Line Items]
Estimated future cash flows, measurement input (percent)	13.00%	13.00%
Proved Oil and Gas Properties \| Discounted Cash Flow \| Market-based Weighted Average Cost of Capital \| Bobcat DevCo
Fresh Start Accounting [Line Items]
Estimated future cash flows, measurement input (percent)	13.00%	13.00%
Minimum
Fresh Start Accounting [Line Items]
Reorganization value			$ 1,300,000
Maximum
Fresh Start Accounting [Line Items]
Reorganization value			$ 1,700,000