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NON-FINANCIAL ASSETS AND LIABILITIES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending $ 3,040 $ 2,792
Increases [1] 450 253
Increases for incorporation [2] 295
Transfers
Decreases (2) (5)
Impairment (100)
Property, plant and equipment, ending 3,683  
Property, plant and equipment depreciation, beginning (1,381) (1,182)
Decreases
Depreciation for the year (208) (199)
Impairment 70
Property, plant and equipment depreciation, ending (1,519) (1,381)
Net book value 2,164 1,659
Land [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 14  
Increases [1]  
Increases for incorporation [2]  
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, ending 140  
Increases [1]  
Increases for incorporation [2] 3  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 143  
Property, plant and equipment depreciation, beginning (68)  
Decreases  
Depreciation for the year (8)  
Impairment  
Property, plant and equipment depreciation, ending (76) (68)
Net book value 67 72
Machinery [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 1,458  
Increases [1] 5  
Increases for incorporation [2] 291  
Transfers 163  
Decreases (1)  
Impairment  
Property, plant and equipment, ending 1,916  
Property, plant and equipment depreciation, beginning (536)  
Decreases  
Depreciation for the year (103)  
Impairment  
Property, plant and equipment depreciation, ending (639) (536)
Net book value 1,277 922
Wells [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 867  
Increases [1] 9  
Increases for incorporation [2]  
Transfers 145  
Decreases (1)  
Impairment (28)  
Property, plant and equipment, ending 992  
Property, plant and equipment depreciation, beginning (532)  
Decreases  
Depreciation for the year (77)  
Impairment 20  
Property, plant and equipment depreciation, ending (589) (532)
Net book value 403 335
Mining property [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 253  
Increases [1]  
Increases for incorporation [2]  
Transfers  
Decreases  
Impairment (72)  
Property, plant and equipment, ending 181  
Property, plant and equipment depreciation, beginning (174)  
Decreases  
Depreciation for the year (10)  
Impairment 50  
Property, plant and equipment depreciation, ending (134) (174)
Net book value 47 79
Vehicles [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 8  
Increases [1] 2  
Increases for incorporation [2]  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 10  
Property, plant and equipment depreciation, beginning (7)  
Decreases  
Depreciation for the year (1)  
Impairment  
Property, plant and equipment depreciation, ending (8) (7)
Net book value 2 1
Fixtures and fittings [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 55  
Increases [1] 2  
Increases for incorporation [2]  
Transfers 2  
Decreases  
Impairment  
Property, plant and equipment, ending 59  
Property, plant and equipment depreciation, beginning (48)  
Decreases  
Depreciation for the year (4)  
Impairment  
Property, plant and equipment depreciation, ending (52) (48)
Net book value 7 7
Communication and network equipment [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 3  
Increases [1]  
Increases for incorporation [2]  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 3  
Property, plant and equipment depreciation, beginning (1)  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending (1) (1)
Net book value 2 2
Materials And Spare Parts [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 30  
Increases [1] 43  
Increases for incorporation [2]  
Transfers (37)  
Decreases  
Impairment  
Property, plant and equipment, ending 36  
Property, plant and equipment depreciation, beginning (3)  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending (3) (3)
Net book value 33 27
Petrochemical Industrial Complex [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 23  
Increases [1]  
Increases for incorporation [2]  
Transfers 6  
Decreases  
Impairment  
Property, plant and equipment, ending 29  
Property, plant and equipment depreciation, beginning (12)  
Decreases  
Depreciation for the year (5)  
Impairment  
Property, plant and equipment depreciation, ending (17) (12)
Net book value 12 11
Work In Progress [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 135  
Increases [1] 352  
Increases for incorporation [2]  
Transfers (233)  
Decreases  
Impairment  
Property, plant and equipment, ending 254  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value 254 135
Advances To Suppliers [Member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 52  
Increases [1] 37  
Increases for incorporation [2]  
Transfers (46)  
Decreases  
Impairment  
Property, plant and equipment, ending 43  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value 43 52
Other property, plant and equipment [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, ending 2  
Increases [1]  
Increases for incorporation [2] 1  
Transfers  
Decreases  
Impairment  
Property, plant and equipment, ending 3  
Property, plant and equipment depreciation, beginning  
Decreases  
Depreciation for the year  
Impairment  
Property, plant and equipment depreciation, ending
Net book value $ 3 $ 2
[1] Includes US$ 11 million corresponding to capitalized financial costs in the fiscal year ended December 31, 2022. There are no capitalized financial costs in the fiscal year ended December 31, 2021.
[2] See Notes 5.1.3 and 5.1.5.