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DISCLOSURES ABOUT OIL AND GAS PRODUCING ACTIVITIES (UNAUDITED) - Change in Quantities of Proved Oil, Natural Gas Liquids, and Natural Gas Reserves (Details) bbl in Thousands, Mcf in Thousands, MBoe in Millions, Boe in Millions	12 Months Ended
	Dec. 31, 2022 Boe $ / bbl $ / MMBTU Mcf bbl	Dec. 31, 2021 Boe $ / MMBTU $ / bbl bbl Mcf	Dec. 31, 2020 Boe MBoe $ / MMBTU $ / bbl bbl Mcf	Dec. 31, 2019 MBoe $ / MMBTU $ / bbl Mcf bbl
Proved reserves demoted to non-proved
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe	(0.2)	(24.1)	(22.9)
Proved developed and undeveloped reserve, drilling program, term	5 years
Wattenberg Field, Rocky Mountain Region
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe	25.4	(20.0)	7.5
Wattenberg Field, Rocky Mountain Region | Price-Related Revisions
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe	11.8
Wattenberg Field, Rocky Mountain Region | Well Performance Forecasts and NGL Yields
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe	13.6
Wattenberg Field, Rocky Mountain Region | Changes in Well Operating Cost Methodology
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe		(13.1)
Wattenberg Field, Rocky Mountain Region | Engineering Revisions
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe		(6.9)	12.3
Revisions to previous estimates - increase (decrease) | MBoe			7.1	(4.8)
Wattenberg Field, Rocky Mountain Region | Fuel, Gas, Interest, and Other Negative Revisions
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Proved developed and undeveloped reserve, revision upward (reduction) of previous estimate (energy) | Boe		(7.1)
Horizontal development | Wattenberg Field, Rocky Mountain Region
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Extensions, discoveries, and other additions | Boe	27.9	0.0	18.0
Oil contracts
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Balance at the beginning of the period	143,579	52,793	64,413
Extensions, discoveries and other additions	12,408	19	9,376
Production	(27,651)	(4,523)	(5,019)
Removed from capital program	(105)	(12,249)	(14,120)
Purchases of minerals in place	17,479	114,379	1,430
Revisions to previous estimates	6,892	(6,840)	(3,287)
Balance at the end of the period	152,602	143,579	52,793	64,413
Proved developed reserves	117,768	104,078	24,320
Proved undeveloped reserves	34,834	39,501	28,473
Oil contracts | Wattenberg Field, Rocky Mountain Region
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Oil and gas commodity, price increase (in dollars per share) | $ / bbl	27.11
Oil and gas commodity price (in dollars per share) | $ / bbl	93.67	66.56	39.57	55.85
Gas contracts
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Balance at the beginning of the period | Mcf	888,499	235,728	212,200
Extensions, discoveries and other additions | Mcf	51,358	103	32,172
Production | Mcf	(112,478)	(13,852)	(14,166)
Removed from capital program | Mcf	(459)	(43,918)	(33,886)
Purchases of minerals in place | Mcf	31,872	767,504	5,457
Revisions to previous estimates | Mcf	8,708	(57,066)	33,951
Balance at the end of the period | Mcf	867,500	888,499	235,728	212,200
Proved developed reserves | Mcf	750,793	748,762	123,220
Proved undeveloped reserves | Mcf	116,707	139,737	112,508
Gas contracts | Wattenberg Field, Rocky Mountain Region
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Oil and gas commodity, price increase (in dollars per share) | $ / MMBTU	2.76
Oil and gas commodity price (in dollars per share) | $ / MMBTU	6.36	3.60	1.99	2.58
Natural gas liquids (per Bbl)
Changes in quantities of proved oil, natural gas liquids and natural gas reserves
Balance at the beginning of the period	106,028	26,111	22,161
Extensions, discoveries and other additions	6,936	0	3,269
Production	(15,666)	(1,763)	(1,858)
Removed from capital program	(46)	(4,485)	(3,141)
Purchases of minerals in place	4,478	89,797	570
Revisions to previous estimates	17,104	(3,632)	5,110
Balance at the end of the period	118,834	106,028	26,111	22,161
Proved developed reserves	102,004	88,967	14,315
Proved undeveloped reserves	16,830	17,061	11,796

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Additions to proved reserves, measured in energy equivalents, that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.

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Sales price per unit of oil and gas produced.

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Energy measure of increase (decrease) in quantity of proved reserve of oil and gas related to revision of a previous estimate resulting from new information, except for an increase in proved acreage, or change in economic factors, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).

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Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.

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The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable.

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Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves.

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