Annual report pursuant to Section 13 and 15(d)

SUPPLEMENTAL OIL AND GAS DISCLOSURES (UNAUDITED) - Estimated Quantities of Net Proved Oil, NGLs and Natural Gas Reserves (Details)

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SUPPLEMENTAL OIL AND GAS DISCLOSURES (UNAUDITED) - Estimated Quantities of Net Proved Oil, NGLs and Natural Gas Reserves (Details)
ft³ in Billions
 12 Months Ended
Dec. 31, 2023
MMBoe
MMBTU
MMBbls
ft³
Dec. 31, 2022
MMBoe
ft³
MMBbls
Dec. 31, 2021
MMBoe
MMBbls
ft³
Proved reserves, balance (Millions of Barrels of Oil Equivalent) | MMBTU 19.7    
Oil [Member]      
Proved reserves, balance (Million Barrels of Oil) 40.6 37.2 32.2
Revisions of previous estimates (Million Barrels of Oil)   4.5 10.0
Purchase of minerals in place (Million Barrels of Oil) 1.4 4.5  
Production (Million Barrels of Oil) (5.0) (5.6) (5.0)
Proved reserves, balance (Million Barrels of Oil) 37.0 40.6 37.2
Proved reserves, ending balance (Million Barrels of Oil) 27.4 31.1 27.6
Undeveloped reserves, ending balance (Million Barrels of Oil) 9.6 9.5 9.6
Natural Gas Liquids [Member]      
Proved reserves, balance (Million Barrels of Oil) 18.9 19.1 17.4
Revisions of previous estimates (Million Barrels of Oil) (4.0) 1.2 3.1
Purchase of minerals in place (Million Barrels of Oil) 0.2 0.2  
Production (Million Barrels of Oil) (1.4) (1.6) (1.4)
Proved reserves, balance (Million Barrels of Oil) 13.7 18.9 19.1
Proved reserves, ending balance (Million Barrels of Oil) 12.7 17.6 17.8
Undeveloped reserves, ending balance (Million Barrels of Oil) 1.0 1.3 1.3
Natural Gas [Member]      
Proved reserves, balance (Million Barrels of Oil) | ft³ 634.6 607.6 569.3
Revisions of previous estimates (Million Barrels of Oil) | ft³ (168.8) 64.3 83.0
Purchase of minerals in place (Million Barrels of Oil) | ft³ 5.8 7.5 0.1
Production (Million Barrels of Oil) | ft³ (37.6) (44.8) (44.8)
Proved reserves, balance (Million Barrels of Oil) | ft³ 434.0 634.6 607.6
Proved reserves, ending balance (Million Barrels of Oil) | ft³ 379.4 576.0 549.2
Undeveloped reserves, ending balance (Million Barrels of Oil) | ft³ 54.6 58.6 58.4
Oil Equivalent [Member]      
Proved reserves, balance (Millions of Barrels of Oil Equivalent) | MMBoe 165.3 157.6 144.4
Revisions of previous estimates (Millions of Barrels of Oil Equivalent) | MMBoe (32.2) 16.3 27.1
Purchase of minerals in place (Millions of Barrels of Oil Equivalent) | MMBoe 2.6 6.0  
Production (Millions of Barrels of Oil Equivalent) | MMBoe (12.7) (14.6) (13.9)
Proved reserves, balance (Millions of Barrels of Oil Equivalent) | MMBoe 123.0 165.3 157.6
Proved reserves, ending balance (Millions of Barrels of Oil Equivalent) | MMBoe 103.3 144.8 137.0
Undeveloped reserves, ending balance (Millions of Barrels of Oil Equivalent) | MMBoe 19.7 20.5 20.6