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SUPPLEMENTAL DISCLOSURES ABOUT NATURAL GAS PRODUCING ACTIVITIES - Additional Information (Details)

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SUPPLEMENTAL DISCLOSURES ABOUT NATURAL GAS PRODUCING ACTIVITIES - Additional Information (Details) - Bcfe
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Extractive Industries [Abstract]      
Extensions, discoveries and other additions 203   13
Additional proved undeveloped locations, discoveries (in Bcfe) 152   12
Additional proved undeveloped locations, drilling activities (in Bcfe) 51   1
Revisions of previous estimates 35 152 4
Proved developed and undeveloped reserves, positive (negative) revision due to change of prices (in Bcfe) 9 149 4
Proved developed and undeveloped, revision from changes in ownership (in Bcfe) 15   1
Proved developed and undeveloped, revision from well performance (in Bcfe) 11 14 9
Proved undeveloped reserves, added from additional locations (in Bcfe) 152   12
Proved undeveloped reserves, revision of previous estimate (in Bcfe) 25   8
Proved developed and undeveloped reserves, revisions due to loss of leases (in Bcfe)   17  
Proved undeveloped reserve, revision of previous estimate (in Bcfe)   165  
Proved undeveloped reserves, revision due to change in commodity prices (in Bcfe) 3 148 2
Proved undeveloped reverses, revision from changes in ownership (in Bcfe) 16   1
Proved undeveloped reserves, revision from well performance (in Bcfe) 6    
Proved undeveloped reserves, revision from lease expirations (in Bcfe)   17  
Proved developed and undeveloped reserves, revision due to changes in operating expenses (in Bcfe)     2
Proved undeveloped reserves, converted (in Bcfe)     29