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EQUITY - Capital stock (Details) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2018 Vote $ / shares shares | Dec. 31, 2018 ARS ($) Vote $ / shares shares | Dec. 31, 2017 ARS ($) Vote $ / shares shares | Dec. 31, 2016 ARS ($) Vote $ / shares shares
Equity |  |  |  |
Nominal value of issued shares | $ |  | $ 2,169,000,000 |  |
Nominal value (in pesos per share) | $ / shares |  | $ 1 | $ 10,000 | $ 10,000
Number of votes per share | Vote |  | 1 |  |
Outstanding shares |  | 2,153,688,011 |  |
Treasury shares (in shares) |  | 15,221,373 |  |
Total capital stock (in shares) |  | 2,168,909,384 | 120,000 | 120,000
Preliminary Merger Agreement and the Final Merger Agreement |  |  |  |
Equity |  |  |  |
Nominal value (in pesos per share) | $ / shares | $ 1 |  |  |
Number of votes per share | Vote | 1 |  |  |
Telecom Argentina |  |  |  |
Equity |  |  |  |
Nominal value of issued shares | $ |  |  | $ 984,000,000 |
Nominal value (in pesos per share) | $ / shares |  |  | $ 1 |
Number of votes per share | Vote |  |  | 1 |
Outstanding shares |  |  | 969,159,605 |
Treasury shares (in shares) |  |  | 15,221,373 |
Cablevision Holding S.A. |  |  |  |
Equity |  |  |  |
Nominal value of issued shares | $ |  |  | $ 1,200 | $ 1,200
Nominal value (in pesos per share) | $ / shares |  |  | $ 10,000 | $ 10,000
Number of votes per share | Vote |  |  | 1 | 1
Outstanding shares |  |  | 120,000 | 120,000
Percentage of interest on stake |  |  | 100.00% |
Class "A" |  |  |  |
Equity |  |  |  |
Outstanding shares |  | 340,994,852 |  |
Class "A" | Preliminary Merger Agreement and the Final Merger Agreement |  |  |  |
Equity |  |  |  |
Shares issued | 342,861,748 |  |  |
Class "A" | Cablevision Holding S.A. |  |  |  |
Equity |  |  |  |
Outstanding shares |  |  | 34,425 |
Percentage of interest on stake |  |  | 28.70% |
Class "A" | VLG Argentina LLC |  |  |  |
Equity |  |  |  |
Outstanding shares |  |  | 61,581 |
Percentage of interest on stake |  |  | 51.30% |
Class "B" |  |  |  |
Equity |  |  |  |
Number of shares each ADS represents |  | 5 |  |
Class "B" | Cablevision Holding S.A. |  |  |  |
Equity |  |  |  |
Outstanding shares |  |  | 6,782 |
Percentage of interest on stake |  |  | 5.70% |
Class "B" | Fintech Media LLC |  |  |  |
Equity |  |  |  |
Outstanding shares |  |  | 17,212 |
Percentage of interest on stake |  |  | 14.30% |
Class "D" | Preliminary Merger Agreement and the Final Merger Agreement |  |  |  |
Equity |  |  |  |
Shares issued | 841,666,658 |  |  |

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