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SIGNIFICANT ACCOUNTING POLICIES - Control (Details) $ / shares in Units, $ / shares in Units, $ in Millions |  |  |  |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 22, 2021 ARS ($) | Jan. 11, 2021 ARS ($) | Dec. 30, 2020 $ / shares shares | Dec. 21, 2020 ARS ($) $ / shares shares | Nov. 10, 2020 ARS ($) | Jun. 27, 2019 ARS ($) $ / shares | Dec. 31, 2021 ARS ($) $ / shares | Dec. 31, 2019 ARS ($) | Oct. 27, 2021 USD ($) $ / shares | Dec. 31, 2020 ARS ($) $ / shares | Sep. 25, 2019 shares | Sep. 04, 2019
Control |  |  |  |  |  |  |  |  |  |  |  |
Par value (in argentine peso per share) | $ / shares |  |  |  |  |  |  | $ 1 |  |  | $ 1 |  |
Goodwill |  |  |  |  |  |  | $ 379,220.0 |  |  | $ 380,234.0 |  |
Tuves Paraguay |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  |  |  |  |  | 30.00%
Adjustment to the non-controlling interest balance |  |  |  |  |  |  |  | $ 193.0 |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  |  |  |  |  | 67.50% |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  |  | 67.50% |  |  |  |  |
AVC Continente Audiovisual |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to the non-controlling interest balance |  |  |  |  |  |  | $ 24.0 |  |  |  |  |
Number of holders offered option | shares |  |  |  |  |  |  |  |  |  |  | 497,479 |
Par value (in argentine peso per share) | $ / shares |  |  |  |  |  |  |  |  | $ 1 |  |  |
Voting right per share |  |  |  |  |  |  |  |  | 1 |  |  |
Percentage of holders offered option |  |  |  |  |  |  | 40.00% |  | 40.00% |  | 40.00% |
Option premium payable upon exercise of option |  |  |  |  |  |  |  |  | $ 497,479 |  |  |
Goodwill |  |  |  |  |  |  | $ 122.0 |  |  |  |  |
Total purchase price |  |  |  |  |  |  | $ 164.0 |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  |  |  |  |  | 100.00% |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  |  | 100.00% |  |  |  |  |
Micro Sistemas |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Par value (in argentine peso per share) | $ / shares |  |  |  | $ 1 |  |  |  |  |  |  |  |
Voting right per share |  |  |  | 1 |  |  |  |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  |  |  |  |  | 100.00% |  |  |  |  |
Irrevocable contribution paid in cash | $ 260.0 | $ 62.0 |  |  | $ 60.0 |  |  |  |  |  |  |
Investments in subsidiaries |  |  |  | $ 60.0 |  |  |  |  |  |  |  |
Increase in number of shares outstanding | shares |  |  |  | 60,000,000 |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  |  | 100.00% |  |  |  |  |
Micro Sistemas | Current currency |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Irrevocable contribution paid in cash | $ 287.0 | $ 90.0 |  |  | $ 94.0 |  |  |  |  |  |  |
Personal Smarthome |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Par value (in argentine peso per share) | $ / shares |  |  | $ 1 |  |  |  |  |  |  |  |  |
Voting right per share |  |  | 5 |  |  |  |  |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  |  |  |  |  | 100.00% |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  |  | 100.00% |  |  |  |  |
Shareholders paid in cash (as a percentage) |  |  | 25.00% |  |  |  |  |  |  |  |  |
Personal Smarthome | Telecom Argentinas |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  | 90.00% |  |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  | 90.00% |  |  |  |  |  |  |  |  |
Outstanding shares | shares |  |  | 90,000 |  |  |  |  |  |  |  |  |
Personal Smarthome | PEM |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  | 10.00% |  |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  | 10.00% |  |  |  |  |  |  |  |  |
Outstanding shares | shares |  |  | 10,000 |  |  |  |  |  |  |  |  |
Other deferred | Tuves Paraguay |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Increase in Tuves shareholding |  |  |  |  |  |  |  | $ 71.0 |  |  |  |
PEM |  |  |  |  |  |  |  |  |  |  |  |
Control |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  | 0.00001% |  |  |  |  |  |
Par value (in argentine peso per share) | $ / shares |  |  |  |  |  | $ 1 |  |  |  |  |  |
Voting right per share |  |  |  |  |  | 1 |  |  |  |  |  |
Total purchase price |  |  |  |  |  | $ 10,000.0 |  |  |  |  |  |
Percentage of direct/indirect interest in capital stock and votes |  |  |  |  |  | 100.00% |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  |  |  |  | 100.00% |  |  |  |  |  |

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