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Segment Information - Summary of Revenue By Geographic Area (Detail) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of geographical areas [line items] |  |  |
Revenue | $ 435,820 | $ 252,813 | $ 210,100
Property, plant and equipment | 699,087 | 354,443 | 308,014
Argentina [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 390,892 | 230,728 | 193,707
Property, plant and equipment | 698,222 | 353,868 | 307,350
Mercosur and Associates Countries [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 20,056 | 8,694 | 7,964
Property, plant and equipment | 865 | 575 | 664
Rest of the world [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 15,711 | 8,785 | 6,142
Europe [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | $ 9,161 | $ 4,606 | $ 2,287

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