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Long-Term Debt - Oasis Credit Facility (Details) - Revolving Credit Facility - Credit Facility - USD ($)		3 Months Ended	6 Months Ended
	May 21, 2021	Jun. 30, 2021	Jun. 30, 2021	Mar. 22, 2021	Mar. 21, 2021	Dec. 31, 2020
Oasis Credit Facility, Fourth Agreement
Debt Instrument [Line Items]
Credit facility borrowing base	$ 550,000,000.0
Covenant terms, percentage of availability	25.00%
Covenant terms, maximum pro forma leverage ratio	1.5
Covenant terms, maximum pro forma leverage ratio, subject to default and availability	2.0
Covenant terms, minimum pro forma leverage ratio subject to default and availability	1.5
Oasis Credit Facility, Fourth Agreement | 2021 Williston Acquisition
Debt Instrument [Line Items]
Increase (decrease) in maximum borrowing capacity	$ 250,000,000.0
Oasis Credit Facility, Fourth Agreement | Primary Permian Basin Sale
Debt Instrument [Line Items]
Increase (decrease) in maximum borrowing capacity	$ (100,000,000.0)
Oasis Credit Facility
Debt Instrument [Line Items]
Credit facility borrowing base		$ 400,000,000.0	$ 400,000,000.0	$ 500,000,000.0	$ 575,000,000.0
Line of credit facility, current borrowing capacity				$ 450,000,000.0	$ 575,000,000.0
Line of credit facility, maximum borrowing capacity, due to elected commitments		450,000,000.0	450,000,000.0
Letters of credit outstanding		1,300,000	1,300,000
Line of credit facility, remaining borrowing capacity		$ 398,700,000	$ 398,700,000
Weighted average interest rate (percent)		3.40%	4.20%
Oasis Credit Facility | Oasis Guarantors
Debt Instrument [Line Items]
Long-term debt, gross		$ 0	$ 0			$ 260,000,000
Minimum | LIBOR | Oasis Credit Facility
Debt Instrument [Line Items]
Stated interest rate				0.25%	1.00%

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