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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, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of geographical areas [line items] |  |  |
Revenue | $ 252,813 | $ 210,100 | $ 156,136
Property, plant and equipment | 354,443 | 308,014 | 270,905
Argentina [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 230,728 | 193,707 | 143,851
Property, plant and equipment | 353,868 | 307,350 | 269,914
Mercosur and Associates Countries [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 8,694 | 7,964 | 6,302
Property, plant and equipment | 575 | 664 | 553
Rest of the world [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 8,785 | 6,142 | 4,175
Property, plant and equipment |  |  | 438
Europe [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | $ 4,606 | $ 2,287 | $ 1,808

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