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Revenues - Summary of Breakdown of Revenues by Sales Channels (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of revenue [line items]      
Sales of goods and services $ 1,286,688 $ 682,928 $ 686,644
Gas Stations [member]      
Disclosure of revenue [line items]      
Sales of goods and services 468,952 241,547 257,648
Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 58,580 28,011 16,414
Distribution companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 24,347 28,895 19,506
Retail distribution of natural gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 39,523 33,995 49,699
Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 258,431 116,741 144,333
Agriculture [member]      
Disclosure of revenue [line items]      
Sales of goods and services 183,204 92,677 64,344
Petrochemical industry [member]      
Disclosure of revenue [line items]      
Sales of goods and services 64,238 23,215 24,475
Trading [member]      
Disclosure of revenue [line items]      
Sales of goods and services 55,469 40,359 39,341
Oil companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 54,705 26,032 20,066
Commercialization of liquefied petroleum gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 14,105 6,544 6,087
Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 65,134 44,912 44,731
Upstream [member]      
Disclosure of revenue [line items]      
Sales of goods and services 4,780 2,472 2,087
Upstream [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 4,780 2,472 2,087
Downstream [member]      
Disclosure of revenue [line items]      
Sales of goods and services 1,067,371 546,173 537,791
Downstream [member] | Gas Stations [member]      
Disclosure of revenue [line items]      
Sales of goods and services 468,952 241,547 257,648
Downstream [member] | Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 12,297 14,600 709
Downstream [member] | Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 202,128 87,757 116,742
Downstream [member] | Agriculture [member]      
Disclosure of revenue [line items]      
Sales of goods and services 183,204 92,677 64,344
Downstream [member] | Petrochemical industry [member]      
Disclosure of revenue [line items]      
Sales of goods and services 64,238 23,215 24,475
Downstream [member] | Trading [member]      
Disclosure of revenue [line items]      
Sales of goods and services 55,469 40,359 39,341
Downstream [member] | Oil companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 54,705 26,032 20,066
Downstream [member] | Commercialization of liquefied petroleum gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 14,105 6,544 6,087
Downstream [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 12,273 13,442 8,379
Gas and power [member]      
Disclosure of revenue [line items]      
Sales of goods and services 180,547 119,176 125,853
Gas and power [member] | Power plants [member]      
Disclosure of revenue [line items]      
Sales of goods and services 46,283 13,411 15,705
Gas and power [member] | Distribution companies [member]      
Disclosure of revenue [line items]      
Sales of goods and services 24,347 28,895 19,506
Gas and power [member] | Retail distribution of natural gas [member]      
Disclosure of revenue [line items]      
Sales of goods and services 39,523 33,995 49,699
Gas and power [member] | Industries, transport and aviation [member]      
Disclosure of revenue [line items]      
Sales of goods and services 56,303 28,984 27,591
Gas and power [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services 14,091 13,891 13,352
Central Administration and Others [member]      
Disclosure of revenue [line items]      
Sales of goods and services 33,990 15,107 20,913
Central Administration and Others [member] | Other sales channels [member]      
Disclosure of revenue [line items]      
Sales of goods and services $ 33,990 $ 15,107 $ 20,913