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v3.20.1

OPERATING EXPENSES - Taxes and fees with the Regulatory Authority (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
OPERATING EXPENSES |  |  |
Turnover tax | $ (8,539) | $ (11,324) | $ (3,318)
Municipal taxes | (2,456) | (2,786) | (1,578)
Other taxes and fees | (7,390) | (6,826) | (2,579)
Total taxes and fees with the regulatory authority | $ (18,385) | $ (20,936) | $ (7,475)

X
- Definition The amount of tax expense exclusive of income tax expense. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_TaxExpenseOtherThanIncomeTaxExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | teo_DisclosureOfOperatingExpensesAbstract
Namespace Prefix: | teo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of municipal taxes. + References No definition available. + Details
Name: | teo_MunicipalTaxes
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of other taxes and fees. + References No definition available. + Details
Name: | teo_OtherTaxesAndFees
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of tax on turnover. + References No definition available. + Details
Name: | teo_TurnoverTax
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration