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Property Plant and Equipment - Summary of Changes in Property Plant and Equipment (Parenthetical) (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
well
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Disclosure of detailed information about property, plant and equipment [line items]      
Exploratory wells in progress | well 23    
Drilled wells | well 17    
Charged to exploratory expense | well 7    
Transferred to proved properties | well 6    
Net book value charged to Property, plant and equipment provisions $ 1 $ 1 $ 16
Depreciation of property plant and equipment 2,551 2,816 2,460
Cost increases of short-term leases 44 11 8
Cost increases of variable charge of leases related to the underlying asset return/use 5 7 24
Capitalization of depreciation of right-of-use assets 57 44 54
Capitalization of financial accretion for lease liabilities 14 11 $ 14
Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Disposal percentage     11.00%
Mining property, wells and related equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Mineral property 333 356 $ 414
Mining property, wells and related equipment | Reversal of Loma de La Mina block [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal   140  
Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal     32
Cost [member] | Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal     31
Accumulated depreciation [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal     26
Accumulated depreciation [member] | Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal     3
Hydrocarbon Wells Abandonmnet [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Increase/(Decrease) of cost of Property, plant and equipment 268 $ 32 (166)
Depreciation of property plant and equipment $ 19   $ 149