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Balances and Transactions with Related Parties - Information about Related Party (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
SGE [member] | Additional Injection of natural gas scheme [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities)   $ 12,607 $ 26,223
SGE [member] | Natural gas production [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) $ 1,610 3,330 3,416
Income / (Costs) 3,696 3,992 5,684
SGE [member] | GasAr Plan [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 4,397    
Income / (Costs) 16,473    
SGE [member] | Propane gas supply agreement [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 472 228 155
Income / (Costs) 837 234 657
SGE [member] | Bottle to bottle program [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities)   240 166
Income / (Costs)     7
SGE [member] | Recognition of the financial cost generated by payment deferral by providers of the distribution service of natural and undiluted propane gas [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 188 625 475
Income / (Costs)   150 475
SGE [member] | Natural Gas Piping Distribution Service Licensed Companies benefit of Metrogas [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 131 440 172
Income / (Costs) 880 845 995
SGE [member] | Temporary economic assistance to metrogas [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 6,775 6,126 4,417
Income / (Costs)     361
Ministry of Transport [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 918 2,802 2,056
Income / (Costs) 6,373 4,515 5,923
Secretariat of Industry [Member]      
Disclosure of balance and transactions with related parties [line items]      
Income / (Costs) 686   688
CAMMESA [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 12,779 7,098 627
Income / (Costs) 56,633 26,054 6,650
CAMMESA [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) (1,173) (983) 386
Income / (Costs) (8,063) (5,678) (3,778)
IEASA [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 8,970 5,998 5,041
Income / (Costs) 11,924 10,992 11,994
IEASA one [member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) (7,866) (2,640) (505)
Income / (Costs) (3,429) (1,650) (462)
Aerolineas Argentinas SA and Austral Lineas Aereas Cielos del Sur SA [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) 2,618 6,009 5,033
Income / (Costs) 12,340 4,641 $ 16,036
Aerolineas Argentinas Sa And Austral Lineas Aereas Cielos Del Sur Sa [Member]      
Disclosure of balance and transactions with related parties [line items]      
Income / (Costs) (133)    
ANSES [Member]      
Disclosure of balance and transactions with related parties [line items]      
Income / (Costs) [1]   $ 1,539  
Agua y Saneamientos Argentinos S.A. [Member]      
Disclosure of balance and transactions with related parties [line items]      
Credit (liabilities) [2] 1,754    
Income / (Costs) [2] 3,121    
Ministry of Work, Employment and Social Security and AFIP      
Disclosure of balance and transactions with related parties [line items]      
Income / (Costs) [3] $ 230    
[1] Income recognized by the Work and Production Assistance Program received in benefit of AESA and OPESSA.
[2] Sale of assets held for disposal.
[3] Income recognized by the Productive Recovery Program II (“REPRO II”) in benefit of OPESSA.