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SIGNIFICANT ACCOUNTING POLICIES - Right of use assets and lease liabilities (Details)	12 Months Ended
	Dec. 31, 2024
Minimum
SIGNIFICANT ACCOUNTING POLICIES
Average useful life of leased assets	1 year
Maximum
SIGNIFICANT ACCOUNTING POLICIES
Average useful life of leased assets	6 years

X

- Definition

Average useful life of leased asset.

+ References

No definition available.

+ Details

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Namespace Prefix:	teo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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

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

X

- Details

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

X

- Details

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