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Balances and Transactions with Related Parties - Information about Related Party (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
MINEM [Member] | Injection Of Natural Gas Scheme [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [1] $ 13,417 $ 10,881 $ 9,859
Income / (Costs) [1] 12,840 16,757 12,345
MINEM [Member] | Crude Oil Production Incentive Program [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [2]     1,988
Income / (Costs) [2]     1,988
MINEM [Member] | Propane Gas Supply Agreement [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [3] 190 129 207
Income / (Costs) [3] 191 93 84
MINEM [Member] | Bottle To Bottle Program [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [4] 162 142 91
Income / (Costs) [4] 119 132 123
MINEM [Member] | Metrogas [member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [5]   759 149
Income / (Costs) [5]   759 711
Ministry of Transport [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [6] 840 1,152 412
Income / (Costs) [6] 5,402 5,658 3,746
Secretariat of Industry [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [7] 24 378 27
Income / (Costs) [7] 188 422 621
CAMMESA [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [8] 4,444 3,782 2,156
Income / (Costs) [8] 17,569 20,934 12,079
CAMMESA [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [9] (316) (170) (196)
Income / (Costs) [9] (2,090) (2,189) (1,460)
Enarsa [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [10] 698 727 758
Income / (Costs) [10] 2,920 2,541 1,635
Enarsa [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [11] (1,591) (1,357) (893)
Income / (Costs) [11] (214) (955) (1,141)
Aerolineas Argentinas SA and Austral Lineas Aereas Cielos del Sur SA [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [12] 946 364 255
Income / (Costs) [12] 4,300 3,066 2,178
Aerolineas Argentinas Sa And Austral Lineas Aereas Cielos Del Sur Sa [Member]      
Disclosure of transactions between related parties [line items]      
Credit (liabilities) [13]   (2)  
Income / (Costs) [13] $ (28) $ (14) $ (1)
[1] The benefits of the incentive scheme for the Additional Injection of natural gas.
[2] Benefits for the crude oil production incentive program.
[3] Benefits for the propane gas supply agreement for undiluted propane gas distribution networks.
[4] Benefits for the bottle-to-bottle program.
[5] Temporary economic assistance to Metrogas.
[6] The compensation for providing gas oil to public transport of passengers at a differential price.
[7] Incentive for domestic manufacturing of capital goods, for the benefit of AESA.
[8] The provision of fuel oil and natural gas, and electric power generation.
[9] Purchases of energy.
[10] Rendering of regasification service in the regasification projects of liquefied natural gas in Escobar and Bahía Blanca.
[11] The purchase of natural gas and crude oil.
[12] The provision of jet fuel.
[13] The purchase of miles for the YPF Serviclub program