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Limited Liability Company or Limited Partnership, Members or Limited Partners, Additional Ownership Interest Acquired

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Oil and Gas Delivery Commitments and Contracts, Maximum Term

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Partners' Capital Account, Sale of Stock or Units, Price per Share Net

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Related Party Transaction, Purchase and Sale Rights Expiration Period

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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- Definition

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

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Change in the number of units for each class of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners.

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- Definition

The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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Amount of transactions with related party during the financial reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Oasis Midstream Partners LP (Details) - USD ($)					12 Months Ended
Oasis Midstream Partners LP (Details) - USD ($)	Nov. 01, 2019	Feb. 22, 2019	Nov. 19, 2018	Nov. 14, 2018	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2018
Common Units
Related Party Transaction [Line Items]
Common units sold in IPO (shares)						5,125,000
Subordinated Units
Related Party Transaction [Line Items]
Common units sold in IPO (shares)						13,750,000
Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Consideration paid to acquire additional interest			$ 251,400,000
Cash payment to acquire additional interest			$ 172,400,000
Oasis Midstream Partners, LP \| Affiliated Entity \| 2019 Capital Expenditures Arrangement
Related Party Transaction [Line Items]
Estimate of reimbursable amounts from OMP		$ 80,000,000.0			$ 73,000,000.0
Oasis Midstream Partners, LP \| Affiliated Entity \| Assignment of Midstream Assets in Delaware Basin
Related Party Transaction [Line Items]
Estimate of reimbursable amounts from OMP	$ 24,900,000
Purchase and sale rights expiration period	2 years
Oasis Midstream Partners, LP \| Partnership Interest
Related Party Transaction [Line Items]
Proceeds from issuance of shares in IPO				$ 44,500,000
Oasis Midstream Partners, LP \| Common Units \| Partnership Interest
Related Party Transaction [Line Items]
Common units sold in IPO (shares)				2,300,000
Shares issued, price per share, net of underwriting discounts and commissions (in usd per share)				$ 20.00
Underwriters' option \| Oasis Midstream Partners, LP \| Common Units \| Partnership Interest
Related Party Transaction [Line Items]
Common units sold in IPO (shares)				300,000
Services and Secondment Agreement \| Affiliated Entity \| Commercial Agreements with OPNA, Oasis Petroleum Marketing LLC (“OPM”) and OMS
Related Party Transaction [Line Items]
Contract term, maximum						15 years
Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Limited partner interest in OMP (percent)						68.60%
Bobcat DevCo \| Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Limited partner interest in OMP (percent)			25.00%
Bobcat DevCo \| OMS Holdings LLC (“OMS”)
Related Party Transaction [Line Items]
Ownership interest (percent)			75.00%		64.70%		75.00%
Beartooth DevCo \| Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Limited partner interest in OMP (percent)					70.00%
Beartooth DevCo \| OMS Holdings LLC (“OMS”)
Related Party Transaction [Line Items]
Ownership interest (percent)			30.00%
Limited partner \| Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Limited partner units issued to acquire additional interest in affiliates			3,950,000
Bobcat DevCo \| Bobcat DevCo \| Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Additional interest acquired (percent)			15.00%
Beartooth DevCo \| Beartooth DevCo \| Oasis Midstream Partners, LP
Related Party Transaction [Line Items]
Additional interest acquired (percent)			30.00%