RESTRICTIONS ON DISTRIBUTION OF PROFITS (Details)	12 Months Ended
Dec. 31, 2020
RESTRICTIONS ON DISTRIBUTION OF PROFITS
Minimum percentage of net income to be appropriated	5.00%
Threshold percentage of statutory reserves of the outstanding capital, used as criteria of allocation requirement	20.00%

The threshold percentage criteria expressed as a percentage of outstanding capital for the transfer of net income by the entity to statutory reserves. If the statutory reserves exceed the specified threshold of the outstanding capital, further appropriation is not required.

No definition available.

Name:	teo_ThresholdPercentageOfStatutoryReserveNeedToBeMadeOverEntitiesOutstandingCapital
Namespace Prefix:	teo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration