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DISCLOSURES ABOUT OIL AND GAS PRODUCING ACTIVITIES (UNAUDITED) - Discounted Future Net Cash Flows Relating to Proved Oil and Natural Gas Reserves (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Results of Operations, Revenue from Oil and Gas Producing Activities [Abstract]      
Future net cash flow discount rate 10.00%    
Standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves      
Future cash flows $ 14,401,814 $ 2,230,012 $ 3,827,009
Future production costs (5,054,695) (675,755) (1,029,140)
Future development costs (1,107,576) (530,970) (850,327)
Future income tax expense (1,465,949) 0 0
Future net cash flows 6,773,594 1,023,287 1,947,542
10% annual discount for estimated timing of cash flows (2,361,490) (586,233) (1,089,395)
Standardized measure of discounted future net cash flows 4,412,104 437,054 858,147
Changes in the standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves      
Beginning of period 437,054 858,147 954,980
Sale of oil and gas produced, net of production costs (773,711) (160,466) (233,677)
Net changes in prices and production costs 874,155 (641,137) (372,233)
Net changes in extensions, discoveries and improved recoveries 855 (54,269) 45,728
Development costs incurred 108,113 42,325 185,086
Changes in estimated development cost 106,788 220,964 81,358
Purchases of minerals in place 4,484,125 12,372 10,135
Sales of minerals in place 0 0 (309)
Revisions of previous quantity estimates (84,126) 60,754 79,637
Net change in income taxes (915,053) 0 0
Accretion of discount 43,705 85,815 95,498
Changes in production rates and other 130,199 12,549 11,944
End of period $ 4,412,104 $ 437,054 $ 858,147