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SIGNIFICANT ACCOUNTING POLICIES - Composition of Rights of use assets (Details) - ARS ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019
IFRS 16 |  |  |  |
Right of use assets | $ 9,444 | $ 873 |  |
Additional depreciation of rights of use assets | 3,479 | 150 | $ 8 |
Net loss before income tax | 10,282 | 4,150 | 23,653 |
Income tax expense | 14,170 | (4,366) | 8,486 |
Controlling Company | (4,396) | 8,145 | $ 14,969 |
IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 6,890 |  |  | $ 7,763
Decrease in operating lease | 3,680 |  |  |
Additional depreciation of rights of use assets | 3,344 |  |  |
Increase in lease liabilities | 1,910 |  |  |
Net loss before income tax | 1,574 |  |  |
Income tax expense | 411 |  |  |
Net loss before income tax | 1,163 |  |  |
Controlling Company | $ 1,171 |  |  |
Net loss after income tax attributable to controlling shareholders per share | $ 0.54 |  |  |
IFRS 16 | Pesos |  |  |  |
IFRS 16 |  |  |  |
Real interest rates | 11.00% |  |  |
IFRS 16 | USD | Minimum |  |  |  |
IFRS 16 |  |  |  |
Real interest rates | 5.00% |  |  |
IFRS 16 | USD | Maximum |  |  |  |
IFRS 16 |  |  |  |
Real interest rates | 7.00% |  |  |
Nucleo | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | $ 1,013 |  |  | 1,160
Poles |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 216 |  |  |
Poles | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | 466
Real estate and other |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 1,471 |  |  |
Real estate and other | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | 1,147
Sites and other |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 6,613 |  |  |
Sites and other | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | 4,880
Occupation fee |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 350 |  |  |
Occupation fee | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | 397
Asset retirement obligations |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | 253 | 247 |  |
Asset retirement obligations | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | 247
Indefeasible rights of use |  |  |  |
IFRS 16 |  |  |  |
Right of use assets | $ 541 | $ 626 |  |
Indefeasible rights of use | IFRS 16 |  |  |  |
IFRS 16 |  |  |  |
Right of use assets |  |  |  | $ 626

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