FINANCIAL RESULTS, NET - Narratives (Details) - ARS ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
FINANCIAL RESULTS, NET
Net income (loss)		$ 3,613	$ (3,558)
Net exchange differences	$ (32,864)	$ (71)	$ 22,722

The amount of foreign currency exchange gain (losses) on borrowings from derivative financial instruments.

No definition available.

Name:	teo_ForeignCurrencyExchangeGainsLossesOnBorrowingsFromDerivativeFinancialInstruments
Namespace Prefix:	teo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration