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Subsequent Event (Details) - Oasis Midstream Partners LP - Subsequent Event
shares in Millions, $ in Millions
Oct. 26, 2021
USD ($)
shares
Subsequent Event [Line Items]  
Consideration transferred | $ $ 1,800
Oasis Petroleum Inc.  
Subsequent Event [Line Items]  
Cash payment | $ $ 150
Issued shares (in shares) 21.0
Stock exchanged (in shares) 33.8
Oasis Midstream Public Unitholders  
Subsequent Event [Line Items]  
Issued shares (in shares) 12.9
Oasis Midstream Partners LP  
Subsequent Event [Line Items]  
Stock exchanged (in shares) 14.8
Oasis Petroleum General Partners  
Subsequent Event [Line Items]  
Cash payment | $ $ 10