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OPERATING EXPENSES - Fees for services, maintenance, materials and supplies (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
OPERATING EXPENSES |  |  |
Maintenance and materials | $ (307,654) | $ (292,186) | $ (313,277)
Fees for services | (238,361) | (267,553) | (282,069)
Directors and Supervisory Committee's fees | (4,442) | (3,652) | (4,503)
Total fees for services, maintenance, materials and supplies | $ (550,457) | $ (563,391) | $ (599,849)

X
- Definition The amount of expense arising from directors and supervisory committee's fees. + References No definition available. + Details
Name: | teo_DirectorsAndSupervisoryCommitteesFees
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The amount of expense relating to fees for services. + References No definition available. + Details
Name: | teo_FeesForServices
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expenses for fees for services, maintenance, materials and supplies. + References No definition available. + Details
Name: | teo_FeesForServicesMaintenanceMaterialsAndSuppliesExpense
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from maintenance and materials. + References No definition available. + Details
Name: | teo_MaintenanceAndMaterials
Namespace Prefix: | teo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration