VARIABLE INTEREST ENTITIES (Narrative) (Details) - USD ($)	1 Months Ended		3 Months Ended		12 Months Ended
	Jul. 30, 2021	Apr. 30, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2021
Variable Interest Entity [Line Items]
Variable Interest Investment					$ 300,000,000
Liquidation IRR Hurdle					7.00%
Variable Interest Entity, Liquidation Distributions					$ 361,700,000
Variable Interest Entity, Distributions Paid	$ 7,700,000	$ 24,700,000	$ 19,000,000	$ 13,900,000
Capital Addition Purchase Commitments | Oil and Natural Gas
Variable Interest Entity [Line Items]
Commitment spending amount					150,000,000
Long-term purchase commitment, purchases made					24,600,000
Drilling commitment adjustment amount					$ 72,700,000
SP Investor Holdings, LLC [Member] | VIE
Variable Interest Entity [Line Items]
Ownership percentage					50.00%
Superior Pipeline Company, L.L.C.
Variable Interest Entity [Line Items]
Date Involvement Began					Apr. 03, 2018
Lack of Recourse					Superior's creditors have no recourse to our general credit.
Methodology for Determining Whether Entity is Primary Beneficiary					We have determined that Superior is a VIE as the equity holders as a group (Unit Corporation and SP Investor) (Members) lack the power to control without the Operator. The Agreement and MSA give us the power to direct the activities that most significantly affect Superior's operating performance through common control of the Operator. Accordingly, Unit is considered the primary beneficiary and consolidates the financial position, operating results, and cash flows of Superior.
Superior Pipeline Company, L.L.C. | SPC Midstream Operating, L.L.C. [Member]
Variable Interest Entity [Line Items]
Monthly service fee					$ 300,000
Superior Pipeline Company, L.L.C. | SP Investor Holdings, LLC [Member]
Variable Interest Entity [Line Items]
Ownership percentage					50.00%