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DEFERRED INCOME TAX ASSETS/LIABILITIES - Maturities of estimated tax carryforward (Details) - ARS ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Deferred tax assets | $ 78.0 | $ 66.0
Non-recoverable Tax carryforward amount | 0.4 |
Tax carryforward amount | 9,554.0 |
Tax Year 2015 |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Tax carryforward amount | 8.0 |
Tax Year 2016 |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Tax carryforward amount | 1.0 |
Tax Year 2017 |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Tax carryforward amount | 1.0 |
Tax carryforward |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Deferred tax assets | 2,866.0 |
Telecom Argentina | Tax Year 2018 |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Tax carryforward amount | 9,540.0 |
Inter Radios | Tax Year 2018 |  |
DEFERRED INCOME TAX ASSETS/LIABILITIES |  |
Tax carryforward amount | $ 4.0 |

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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_o&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_56&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_e&doctype=Standard -URIDate 2018-03-16 + Details
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