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Exploration and evaluation of oil and gas reserves (Details Narrative) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Oct. 31, 2023
Dec. 31, 2021
IfrsStatementLineItems [Line Items]        
Intangible assets $ 3,042 $ 2,986   $ 3,025
Recognition of losses in Intangible assets 364   $ 37  
Agreement commits to investing 347 1,681    
B M C 33 [Member]        
IfrsStatementLineItems [Line Items]        
Property plant and equipment 968      
Sepia Field [Member]        
IfrsStatementLineItems [Line Items]        
Property plant and equipment 46      
Intangible assets   424    
North Brava [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets 103      
Southwest Sagitarno [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets $ 40      
Atapu Field [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets   416    
Itapu Field [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets   $ 337    
Tres Marias [Member]        
IfrsStatementLineItems [Line Items]        
Recognition of losses in Intangible assets     $ 6