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v3.19.1

OPERATING EXPENSES - Fees for services, maintenance, materials and supplies (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
OPERATING EXPENSES |  |  |
Maintenance and materials | $ (8,533) | $ (4,300) | $ (5,271)
Fees for services | (7,629) | (2,930) | (2,619)
Directors and Supervisory Committee's fees | (99) | (24) | (22)
Total fees for services, maintenance, materials and supplies | $ (16,261) | $ (7,254) | $ (7,912)

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