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NON-FINANCIAL ASSETS AND LIABILITIES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning $ 4,169 $ 3,683
Increases 472 814
Increases for incorporation 3
Transfers
Decreases (99) (160)
Impairment (155) (168)
Property, plant and equipment, ending 4,390 4,169
Property, plant and equipment depreciation, beginning (1,625) (1,519)
Decreases 57 25
Depreciation for the year (336) (261)
Impairment 121 130
Property, plant and equipment depreciation, ending (1,783) (1,625)
Net book value 2,607 2,544
Land [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 14  
Increases  
Increases for incorporation  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 14  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value 14 14
Buildings [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 144  
Increases  
Increases for incorporation  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 144  
Property, plant and equipment depreciation, beginning (83)  
Decreases  
Depreciation for the year (9)  
Impairment  
Property, plant and equipment depreciation, ending (92) (83)
Net book value 52 61
Machinery [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 1,960  
Increases 1  
Increases for incorporation 2  
Transfers 353  
Decreases (11)  
Impairment (60)  
Property, plant and equipment, ending 2,245  
Property, plant and equipment depreciation, beginning (748)  
Decreases 9  
Depreciation for the year (146)  
Impairment 43  
Property, plant and equipment depreciation, ending (842) (748)
Net book value 1,403 1,212
Wells [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 1,195  
Increases 8  
Increases for incorporation  
Transfers 257  
Decreases (52)  
Impairment (95)  
Property, plant and equipment, ending 1,313  
Property, plant and equipment depreciation, beginning (578)  
Decreases 17  
Depreciation for the year (161)  
Impairment 78  
Property, plant and equipment depreciation, ending (644) (578)
Net book value 669 617
Mining property [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 198  
Increases  
Increases for incorporation  
Transfers  
Decreases (3)  
Impairment  
Property, plant and equipment, ending 195  
Property, plant and equipment depreciation, beginning (124)  
Decreases 3  
Depreciation for the year (8)  
Impairment  
Property, plant and equipment depreciation, ending (129) (124)
Net book value 66 74
Vehicles [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 11  
Increases 1  
Increases for incorporation  
Transfers  
Decreases (1)  
Impairment  
Property, plant and equipment, ending 11  
Property, plant and equipment depreciation, beginning (8)  
Decreases 1  
Depreciation for the year (1)  
Impairment  
Property, plant and equipment depreciation, ending (8) (8)
Net book value 3 3
Fixtures and fittings [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 62  
Increases 4  
Increases for incorporation 1  
Transfers 2  
Decreases (29)  
Impairment  
Property, plant and equipment, ending 40  
Property, plant and equipment depreciation, beginning (57)  
Decreases 27  
Depreciation for the year (5)  
Impairment  
Property, plant and equipment depreciation, ending (35) (57)
Net book value 5 5
Communication and network equipment [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 1  
Increases  
Increases for incorporation  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 1  
Property, plant and equipment depreciation, beginning (1)  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending (1) (1)
Net book value
Materials And Spare Parts [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 44  
Increases 55  
Increases for incorporation  
Transfers (49)  
Decreases (2)  
Impairment  
Property, plant and equipment, ending 48  
Property, plant and equipment depreciation, beginning (3)  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending (3) (3)
Net book value 45 41
Petrochemical Industrial Complex [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 32  
Increases  
Increases for incorporation  
Transfers 8  
Decreases  
Impairment  
Property, plant and equipment, ending 40  
Property, plant and equipment depreciation, beginning (22)  
Decreases  
Depreciation for the year (4)  
Impairment  
Property, plant and equipment depreciation, ending (26) (22)
Net book value 14 10
Civilworks [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 24  
Increases  
Increases for incorporation  
Transfers 38  
Decreases  
Impairment  
Property, plant and equipment, ending 62  
Property, plant and equipment depreciation, beginning (1)  
Decreases  
Depreciation for the year (2)  
Impairment  
Property, plant and equipment depreciation, ending (3) (1)
Net book value 59 23
Work In Progress [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 420  
Increases 382  
Increases for incorporation  
Transfers (562)  
Decreases (1)  
Impairment  
Property, plant and equipment, ending 239  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value 239 420
Advances To Suppliers [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, beginning 64  
Increases 21  
Increases for incorporation  
Transfers (47)  
Decreases  
Impairment  
Property, plant and equipment, ending 38  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value $ 38 $ 64