Represents the additional amount of investments in high-cost areas included in the unrecorded accounts receivable.

No definition available.

Name:	teo_AdditionalInvestmentsIncludedInUnrecordedAccountsReceivable
Namespace Prefix:	teo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of total accrued revenues licensees are required to contribute to the SU Fund.

+ References

No definition available.

+ Details

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

- Definition

Represents the amount of deposit liability, as required by the Argentine National Communications Commission (CNC).

+ References

No definition available.

+ Details

Name:	teo_DepositLiabilityRequiredByArgentineNationalCommunicationsCommission
Namespace Prefix:	teo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	teo_DisclosureOnRegulatoryFrameworkLineItems
Namespace Prefix:	teo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of investments in high-cost areas included in the unrecorded accounts receivable.

+ References

No definition available.

+ Details

Name:	teo_InvestmentsIncludedInUnrecordedAccountsReceivable
Namespace Prefix:	teo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Monthly obligation settlement percentage of total contribution.

+ References

No definition available.

+ Details

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

- Definition

Percentage of teledensity required to be maintained by local service providers.

+ References

No definition available.

+ Details

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

- Definition

Amount of receivable from regulatory authority under contributions.

+ References

No definition available.

+ Details

Name:	teo_ReceivableFromRegulatoryAuthorityUnderContributions
Namespace Prefix:	teo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

REGULATORY FRAMEWORK - Universal Service Regulation (Details) - ARS ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Sep. 13, 2012	Apr. 08, 2011
Regulatory framework
Contribution to SU Fund, percentage	1.00%
Monthly obligation settlement percentage of total contribution	30.00%
Receivable from regulatory authority	$ 13,229
Investments included in the unrecorded accounts receivable			$ 13,512
Additional investments included in the unrecorded accounts receivable			$ 1,541
Deposit payable, as required by the CNC		$ 208
Minimum
Regulatory framework
Minimum percentage of teledensity required for not providing contribution to SU fund	15.00%