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Balances and Transactions with Related Parties - Information about Related Party (Detail) - ARS ($) $ in Millions | 12 Months Ended
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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

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