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Schedule of proved reserves (Details)
Dec. 31, 2021
Number
IfrsStatementLineItems [Line Items]  
Proved developed reserves 14,947
Oil And L N G [Member]  
IfrsStatementLineItems [Line Items]  
Proved developed reserves 7,970 [1]
Proved undeveloped reserves 4,655 [1]
Proved reserves 12,625 [1]
Natural Gas [Member]  
IfrsStatementLineItems [Line Items]  
Proved reserves 24,537 [2]
Natural Gas 1 [Member]  
IfrsStatementLineItems [Line Items]  
Proved undeveloped reserves 9,590 [2]
Argentina [Member]  
IfrsStatementLineItems [Line Items]  
Proved developed reserves 12,625
Argentina [Member] | Oil And L N G [Member]  
IfrsStatementLineItems [Line Items]  
Proved developed reserves 7,970 [1]
Proved undeveloped reserves 4,655 [1]
Argentina [Member] | Natural Gas [Member]  
IfrsStatementLineItems [Line Items]  
Proved developed reserves 14,947 [2]
Proved reserves 24,537 [2]
Argentina [Member] | Natural Gas 1 [Member]  
IfrsStatementLineItems [Line Items]  
Proved undeveloped reserves 9,590 [2]
[1] In thousands of barrels.
[2] In millions of cubic meters.