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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, 2021
ARS ($)
Well
Property
Dec. 31, 2020
ARS ($)
Property
Dec. 31, 2019
ARS ($)
Property
Disclosure of detailed information about property, plant and equipment [line items]      
Exploratory wells in progress | Well 19    
Drilled wells | Well 15    
Charged to exploratory expense | Well 5    
Transferred to proved properties | Property 1    
Net book value charged to Property, plant and equipment provisions $ 134 $ 1,256 $ 48
Depreciation of property plant and equipment 267,686 171,452 145,894
Cost increases of short-term leases 1,003 599 2,109
Cost increases of variable charge of leases related to the underlying asset return/use 658 1,669 1,228
Capitalization of amortization of right-of-use assets 4,166 3,789 2,021
Capitalization of financial accretion for lease liabilities $ 1,020 $ 967 $ 311
Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Disposal percentage 11.00%    
Mineral Property, Wells and Related Equipment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Mineral property | Property 36,541 34,801 22,343
Mineral Property, Wells and Related Equipment [member] | Loma de La Mina area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal $ 14,559    
Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal   $ 2,715  
Cost [member] | Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal   2,027  
Accumulated depreciation [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal   2,221  
Accumulated depreciation [member] | Bandurria Sur Area [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Reclassification of assets held for disposal   204  
Hydrocarbon Wells Abandonmnet [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Increase/(Decrease) of cost of Property, plant and equipment 3,349 (13,918) $ 1,172
Depreciation of property plant and equipment $ 3 $ 12,492 $ 4,664