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OPERATING EXPENSES - Taxes and Fees with the Regulatory Authority (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
OPERATING EXPENSES |  |  |
Turnover tax | $ (168,872) | $ (170,237) | $ (182,839)
Regulatory Entity Fees | (84,586) | (85,017) | (94,816)
Municipal taxes | (41,201) | (45,567) | (51,971)
Other taxes and fees | (30,963) | (43,657) | (50,066)
Total taxes and fees with the regulatory authority | $ (325,622) | $ (344,478) | $ (379,692)

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 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + 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

X
- 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

X
- Definition Amount of taxes with the regulatory authority. + References No definition available. + Details
Name: | teo_TaxesWithRegulatoryAuthority
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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