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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