3.25.4 html 1283 730 1 true 366 0 false 13 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.telecom.com.ar/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION Sheet http://www.telecom.com.ar/role/StatementConsolidatedStatementsOfFinancialPosition CONSOLIDATED STATEMENTS OF FINANCIAL POSITION Statements 2 false false R3.htm 00200 - Statement - CONSOLIDATED INCOME STATEMENTS Sheet http://www.telecom.com.ar/role/StatementConsolidatedIncomeStatements CONSOLIDATED INCOME STATEMENTS Statements 3 false false R4.htm 00300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.telecom.com.ar/role/StatementConsolidatedStatementsOfComprehensiveIncome CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 4 false false R5.htm 00400 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.telecom.com.ar/role/StatementConsolidatedStatementsOfChangesInEquity CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Statements 5 false false R6.htm 00500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.telecom.com.ar/role/StatementConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 00505 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Sheet http://www.telecom.com.ar/role/StatementConsolidatedStatementsOfCashFlowsParenthetical CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Statements 7 false false R8.htm 10101 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatements DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS Notes 8 false false R9.htm 10201 - Disclosure - REGULATORY FRAMEWORK Sheet http://www.telecom.com.ar/role/DisclosureRegulatoryFramework REGULATORY FRAMEWORK Notes 9 false false R10.htm 10301 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPolicies SIGNIFICANT ACCOUNTING POLICIES Notes 10 false false R11.htm 10401 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlows CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS Notes 11 false false R12.htm 10501 - Disclosure - TRADE RECEIVABLES Sheet http://www.telecom.com.ar/role/DisclosureTradeReceivables TRADE RECEIVABLES Notes 12 false false R13.htm 10601 - Disclosure - OTHER RECEIVABLES Sheet http://www.telecom.com.ar/role/DisclosureOtherReceivables OTHER RECEIVABLES Notes 13 false false R14.htm 10701 - Disclosure - INVENTORIES Sheet http://www.telecom.com.ar/role/DisclosureInventories INVENTORIES Notes 14 false false R15.htm 10801 - Disclosure - GOODWILL Sheet http://www.telecom.com.ar/role/DisclosureGoodwill GOODWILL Notes 15 false false R16.htm 10901 - Disclosure - PP&E Sheet http://www.telecom.com.ar/role/DisclosurePpE PP&E Notes 16 false false R17.htm 11001 - Disclosure - INTANGIBLE ASSETS Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssets INTANGIBLE ASSETS Notes 17 false false R18.htm 11101 - Disclosure - RIGHT OF USE ASSETS Sheet http://www.telecom.com.ar/role/DisclosureRightOfUseAssets RIGHT OF USE ASSETS Notes 18 false false R19.htm 11201 - Disclosure - TRADE PAYABLES Sheet http://www.telecom.com.ar/role/DisclosureTradePayables TRADE PAYABLES Notes 19 false false R20.htm 11301 - Disclosure - BORROWINGS Sheet http://www.telecom.com.ar/role/DisclosureBorrowings BORROWINGS Notes 20 false false R21.htm 11401 - Disclosure - SALARIES AND SOCIAL SECURITY PAYABLES Sheet http://www.telecom.com.ar/role/DisclosureSalariesAndSocialSecurityPayables SALARIES AND SOCIAL SECURITY PAYABLES Notes 21 false false R22.htm 11501 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilities INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES Notes 22 false false R23.htm 11601 - Disclosure - OTHER TAXES PAYABLES Sheet http://www.telecom.com.ar/role/DisclosureOtherTaxesPayables OTHER TAXES PAYABLES Notes 23 false false R24.htm 11701 - Disclosure - LEASE LIABILITIES Sheet http://www.telecom.com.ar/role/DisclosureLeaseLiabilities LEASE LIABILITIES Notes 24 false false R25.htm 11801 - Disclosure - OTHER LIABILITIES Sheet http://www.telecom.com.ar/role/DisclosureOtherLiabilities OTHER LIABILITIES Notes 25 false false R26.htm 11901 - Disclosure - PROVISIONS Sheet http://www.telecom.com.ar/role/DisclosureProvisions PROVISIONS Notes 26 false false R27.htm 12001 - Disclosure - PURCHASE COMMITMENTS Sheet http://www.telecom.com.ar/role/DisclosurePurchaseCommitments PURCHASE COMMITMENTS Notes 27 false false R28.htm 12101 - Disclosure - EQUITY Sheet http://www.telecom.com.ar/role/DisclosureEquity EQUITY Notes 28 false false R29.htm 12201 - Disclosure - FINANCIAL INSTRUMENTS Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstruments FINANCIAL INSTRUMENTS Notes 29 false false R30.htm 12301 - Disclosure - REVENUES Sheet http://www.telecom.com.ar/role/DisclosureRevenues REVENUES Notes 30 false false R31.htm 12401 - Disclosure - OPERATING EXPENSES Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpenses OPERATING EXPENSES Notes 31 false false R32.htm 12501 - Disclosure - FINANCIAL RESULTS, NET Sheet http://www.telecom.com.ar/role/DisclosureFinancialResultsNet FINANCIAL RESULTS, NET Notes 32 false false R33.htm 12601 - Disclosure - FINANCIAL RISK MANAGEMENT Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagement FINANCIAL RISK MANAGEMENT Notes 33 false false R34.htm 12701 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedParties BALANCES AND TRANSACTIONS WITH RELATED PARTIES Notes 34 false false R35.htm 12801 - Disclosure - BUSINESS ACQUISITION Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisition BUSINESS ACQUISITION Notes 35 false false R36.htm 12901 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.telecom.com.ar/role/DisclosureSubsequentEvents SUBSEQUENT EVENTS Notes 36 false false R37.htm 20302 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesPolicies SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 37 false false R38.htm 30103 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsTables DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS (Tables) Tables http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatements 38 false false R39.htm 30303 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesTables SIGNIFICANT ACCOUNTING POLICIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureSignificantAccountingPolicies 39 false false R40.htm 30403 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsTables CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS (Tables) Tables http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlows 40 false false R41.htm 30503 - Disclosure - TRADE RECEIVABLES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureTradeReceivablesTables TRADE RECEIVABLES (Tables) Tables http://www.telecom.com.ar/role/DisclosureTradeReceivables 41 false false R42.htm 30603 - Disclosure - OTHER RECEIVABLES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureOtherReceivablesTables OTHER RECEIVABLES (Tables) Tables http://www.telecom.com.ar/role/DisclosureOtherReceivables 42 false false R43.htm 30703 - Disclosure - INVENTORIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureInventoriesTables INVENTORIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureInventories 43 false false R44.htm 30803 - Disclosure - GOODWILL (Tables) Sheet http://www.telecom.com.ar/role/DisclosureGoodwillTables GOODWILL (Tables) Tables http://www.telecom.com.ar/role/DisclosureGoodwill 44 false false R45.htm 30903 - Disclosure - PP&E (Tables) Sheet http://www.telecom.com.ar/role/DisclosurePpETables PP&E (Tables) Tables http://www.telecom.com.ar/role/DisclosurePpE 45 false false R46.htm 31003 - Disclosure - INTANGIBLE ASSETS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssetsTables INTANGIBLE ASSETS (Tables) Tables http://www.telecom.com.ar/role/DisclosureIntangibleAssets 46 false false R47.htm 31103 - Disclosure - RIGHT OF USE ASSETS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureRightOfUseAssetsTables RIGHT OF USE ASSETS (Tables) Tables http://www.telecom.com.ar/role/DisclosureRightOfUseAssets 47 false false R48.htm 31203 - Disclosure - TRADE PAYABLES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureTradePayablesTables TRADE PAYABLES (Tables) Tables http://www.telecom.com.ar/role/DisclosureTradePayables 48 false false R49.htm 31303 - Disclosure - BORROWINGS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureBorrowingsTables BORROWINGS (Tables) Tables http://www.telecom.com.ar/role/DisclosureBorrowings 49 false false R50.htm 31403 - Disclosure - SALARIES AND SOCIAL SECURITY PAYABLES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureSalariesAndSocialSecurityPayablesTables SALARIES AND SOCIAL SECURITY PAYABLES (Tables) Tables http://www.telecom.com.ar/role/DisclosureSalariesAndSocialSecurityPayables 50 false false R51.htm 31503 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesTables INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilities 51 false false R52.htm 31603 - Disclosure - OTHER TAXES PAYABLES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureOtherTaxesPayablesTables OTHER TAXES PAYABLES (Tables) Tables http://www.telecom.com.ar/role/DisclosureOtherTaxesPayables 52 false false R53.htm 31703 - Disclosure - LEASE LIABILITIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureLeaseLiabilitiesTables LEASE LIABILITIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureLeaseLiabilities 53 false false R54.htm 31803 - Disclosure - OTHER LIABILITIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureOtherLiabilitiesTables OTHER LIABILITIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureOtherLiabilities 54 false false R55.htm 31903 - Disclosure - PROVISIONS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureProvisionsTables PROVISIONS (Tables) Tables http://www.telecom.com.ar/role/DisclosureProvisions 55 false false R56.htm 32003 - Disclosure - PURCHASE COMMITMENTS (Tables) Sheet http://www.telecom.com.ar/role/DisclosurePurchaseCommitmentsTables PURCHASE COMMITMENTS (Tables) Tables http://www.telecom.com.ar/role/DisclosurePurchaseCommitments 56 false false R57.htm 32103 - Disclosure - EQUITY (Tables) Sheet http://www.telecom.com.ar/role/DisclosureEquityTables EQUITY (Tables) Tables http://www.telecom.com.ar/role/DisclosureEquity 57 false false R58.htm 32203 - Disclosure - FINANCIAL INSTRUMENTS (Tables) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsTables FINANCIAL INSTRUMENTS (Tables) Tables http://www.telecom.com.ar/role/DisclosureFinancialInstruments 58 false false R59.htm 32303 - Disclosure - REVENUES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureRevenuesTables REVENUES (Tables) Tables http://www.telecom.com.ar/role/DisclosureRevenues 59 false false R60.htm 32403 - Disclosure - OPERATING EXPENSES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesTables OPERATING EXPENSES (Tables) Tables http://www.telecom.com.ar/role/DisclosureOperatingExpenses 60 false false R61.htm 32503 - Disclosure - FINANCIAL RESULTS, NET (Tables) Sheet http://www.telecom.com.ar/role/DisclosureFinancialResultsNetTables FINANCIAL RESULTS, NET (Tables) Tables http://www.telecom.com.ar/role/DisclosureFinancialResultsNet 61 false false R62.htm 32603 - Disclosure - FINANCIAL RISK MANAGEMENT (Tables) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementTables FINANCIAL RISK MANAGEMENT (Tables) Tables http://www.telecom.com.ar/role/DisclosureFinancialRiskManagement 62 false false R63.htm 32703 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES (Tables) Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedPartiesTables BALANCES AND TRANSACTIONS WITH RELATED PARTIES (Tables) Tables http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedParties 63 false false R64.htm 32803 - Disclosure - BUSINESS ACQUISITION (Tables) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionTables BUSINESS ACQUISITION (Tables) Tables http://www.telecom.com.ar/role/DisclosureBusinessAcquisition 64 false false R65.htm 40101 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Subsidiaries (Details) Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsSubsidiariesDetails DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Subsidiaries (Details) Details http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsTables 65 false false R66.htm 40102 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Segment financial information of Consolidated Income Statement (Details) Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsSegmentFinancialInformationOfConsolidatedIncomeStatementDetails DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Segment financial information of Consolidated Income Statement (Details) Details 66 false false R67.htm 40103 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Segment financial information as per geographical area (Details) Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsSegmentFinancialInformationAsPerGeographicalAreaDetails DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Segment financial information as per geographical area (Details) Details 67 false false R68.htm 40104 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Consumer Price Index (Details) Sheet http://www.telecom.com.ar/role/DisclosureDescriptionOfBusinessAndBasisOfPreparationOfConsolidatedFinancialStatementsConsumerPriceIndexDetails DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Consumer Price Index (Details) Details 68 false false R69.htm 40201 - Disclosure - REGULATORY FRAMEWORK (Details) Sheet http://www.telecom.com.ar/role/DisclosureRegulatoryFrameworkDetails REGULATORY FRAMEWORK (Details) Details http://www.telecom.com.ar/role/DisclosureRegulatoryFramework 69 false false R70.htm 40202 - Disclosure - REGULATORY FRAMEWORK - Spectrum (Details) Sheet http://www.telecom.com.ar/role/DisclosureRegulatoryFrameworkSpectrumDetails REGULATORY FRAMEWORK - Spectrum (Details) Details 70 false false R71.htm 40301 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Investment in TSMA (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesInvestmentInTsmaDetails SIGNIFICANT ACCOUNTING POLICIES - Investment in TSMA (Details) Details 71 false false R72.htm 40302 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Interests in Joint Operations & Joint venture (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesInterestsInJointOperationsJointVentureDetails SIGNIFICANT ACCOUNTING POLICIES - Interests in Joint Operations & Joint venture (Details) Details 72 false false R73.htm 40303 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Revenues & Financial Instruments (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesRevenuesFinancialInstrumentsDetails SIGNIFICANT ACCOUNTING POLICIES - Revenues & Financial Instruments (Details) Details 73 false false R74.htm 40304 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesPropertyPlantAndEquipmentDetails SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) Details 74 false false R75.htm 40305 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesIntangibleAssetsDetails SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets (Details) Details 75 false false R76.htm 40306 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Assets classified as held for sale (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesAssetsClassifiedAsHeldForSaleDetails SIGNIFICANT ACCOUNTING POLICIES - Assets classified as held for sale (Details) Details 76 false false R77.htm 40307 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Right of use assets and lease liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesRightOfUseAssetsAndLeaseLiabilitiesDetails SIGNIFICANT ACCOUNTING POLICIES - Right of use assets and lease liabilities (Details) Details 77 false false R78.htm 40308 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Impairment of Fixed Assets (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesImpairmentOfFixedAssetsDetails SIGNIFICANT ACCOUNTING POLICIES - Impairment of Fixed Assets (Details) Details 78 false false R79.htm 40309 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Other liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesOtherLiabilitiesDetails SIGNIFICANT ACCOUNTING POLICIES - Other liabilities (Details) Details 79 false false R80.htm 40310 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Taxes Payable (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesTaxesPayableDetails SIGNIFICANT ACCOUNTING POLICIES - Taxes Payable (Details) Details 80 false false R81.htm 40311 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Net Earnings (losses) per Share (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesNetEarningsLossesPerShareDetails SIGNIFICANT ACCOUNTING POLICIES - Net Earnings (losses) per Share (Details) Details 81 false false R82.htm 40312 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Use of Estimates (Details) Sheet http://www.telecom.com.ar/role/DisclosureSignificantAccountingPoliciesUseOfEstimatesDetails SIGNIFICANT ACCOUNTING POLICIES - Use of Estimates (Details) Details 82 false false R83.htm 40401 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash and cash equivalents and Investments (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsCashAndCashEquivalentsAndInvestmentsDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash and cash equivalents and Investments (Details) Details 83 false false R84.htm 40402 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Investment and earnings information in associates & Joint ventures (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsInvestmentAndEarningsInformationInAssociatesJointVenturesDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Investment and earnings information in associates & Joint ventures (Details) Details 84 false false R85.htm 40403 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Changes in assets/liabilities components (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsChangesInAssetsLiabilitiesComponentsDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Changes in assets/liabilities components (Details) Details 85 false false R86.htm 40404 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Investments in associates and joint ventures (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsInvestmentsInAssociatesAndJointVenturesDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Investments in associates and joint ventures (Details) Details 86 false false R87.htm 40405 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash dividends & Non-cash dividends (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsCashDividendsNonCashDividendsDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash dividends & Non-cash dividends (Details) Details 87 false false R88.htm 40406 - Disclosure - CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Main non-cash operating transactions (Details) Sheet http://www.telecom.com.ar/role/DisclosureCashAndCashEquivalentsAndInvestmentsAdditionalInformationOnConsolidatedStatementsOfCashFlowsMainNonCashOperatingTransactionsDetails CASH AND CASH EQUIVALENTS AND INVESTMENTS. ADDITIONAL INFORMATION ON THE CONSOLIDATED STATEMENTS OF CASH FLOWS - Main non-cash operating transactions (Details) Details 88 false false R89.htm 40501 - Disclosure - TRADE RECEIVABLES (Details) Sheet http://www.telecom.com.ar/role/DisclosureTradeReceivablesDetails TRADE RECEIVABLES (Details) Details http://www.telecom.com.ar/role/DisclosureTradeReceivablesTables 89 false false R90.htm 40502 - Disclosure - TRADE RECEIVABLES - Movements in the allowance for current doubtful accounts (Details) Sheet http://www.telecom.com.ar/role/DisclosureTradeReceivablesMovementsInAllowanceForCurrentDoubtfulAccountsDetails TRADE RECEIVABLES - Movements in the allowance for current doubtful accounts (Details) Details 90 false false R91.htm 40601 - Disclosure - OTHER RECEIVABLES (Details) Sheet http://www.telecom.com.ar/role/DisclosureOtherReceivablesDetails OTHER RECEIVABLES (Details) Details http://www.telecom.com.ar/role/DisclosureOtherReceivablesTables 91 false false R92.htm 40602 - Disclosure - OTHER RECEIVABLES - Movements in the allowances (Details) Sheet http://www.telecom.com.ar/role/DisclosureOtherReceivablesMovementsInAllowancesDetails OTHER RECEIVABLES - Movements in the allowances (Details) Details 92 false false R93.htm 40701 - Disclosure - INVENTORIES (Details) Sheet http://www.telecom.com.ar/role/DisclosureInventoriesDetails INVENTORIES (Details) Details http://www.telecom.com.ar/role/DisclosureInventoriesTables 93 false false R94.htm 40702 - Disclosure - INVENTORIES - Movements in the allowance for obsolescence of inventories (Details) Sheet http://www.telecom.com.ar/role/DisclosureInventoriesMovementsInAllowanceForObsolescenceOfInventoriesDetails INVENTORIES - Movements in the allowance for obsolescence of inventories (Details) Details 94 false false R95.htm 40801 - Disclosure - GOODWILL (Details) Sheet http://www.telecom.com.ar/role/DisclosureGoodwillDetails GOODWILL (Details) Details http://www.telecom.com.ar/role/DisclosureGoodwillTables 95 false false R96.htm 40802 - Disclosure - GOODWILL - Movements in goodwill (Details) Sheet http://www.telecom.com.ar/role/DisclosureGoodwillMovementsInGoodwillDetails GOODWILL - Movements in goodwill (Details) Details 96 false false R97.htm 40901 - Disclosure - PP&E (Details) Sheet http://www.telecom.com.ar/role/DisclosurePpEDetails PP&E (Details) Details http://www.telecom.com.ar/role/DisclosurePpETables 97 false false R98.htm 40902 - Disclosure - PP&E - Gross (Details) Sheet http://www.telecom.com.ar/role/DisclosurePpEGrossDetails PP&E - Gross (Details) Details 98 false false R99.htm 40903 - Disclosure - PP&E - Accumulated Depreciation (Details) Sheet http://www.telecom.com.ar/role/DisclosurePpEAccumulatedDepreciationDetails PP&E - Accumulated Depreciation (Details) Details 99 false false R100.htm 40904 - Disclosure - PP&E - Movements for materials and PP&E (Details) Sheet http://www.telecom.com.ar/role/DisclosurePpEMovementsForMaterialsAndPpEDetails PP&E - Movements for materials and PP&E (Details) Details 100 false false R101.htm 41001 - Disclosure - INTANGIBLE ASSETS (Details) Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssetsDetails INTANGIBLE ASSETS (Details) Details http://www.telecom.com.ar/role/DisclosureIntangibleAssetsTables 101 false false R102.htm 41002 - Disclosure - INTANGIBLE ASSETS - Gross Value (Details) Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssetsGrossValueDetails INTANGIBLE ASSETS - Gross Value (Details) Details 102 false false R103.htm 41003 - Disclosure - INTANGIBLE ASSETS - Accumulated Amortization (Details) Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssetsAccumulatedAmortizationDetails INTANGIBLE ASSETS - Accumulated Amortization (Details) Details 103 false false R104.htm 41004 - Disclosure - INTANGIBLE ASSETS - Movements in impairment of Intangible assets (Details) Sheet http://www.telecom.com.ar/role/DisclosureIntangibleAssetsMovementsInImpairmentOfIntangibleAssetsDetails INTANGIBLE ASSETS - Movements in impairment of Intangible assets (Details) Details 104 false false R105.htm 41101 - Disclosure - RIGHT OF USE ASSETS (Details) Sheet http://www.telecom.com.ar/role/DisclosureRightOfUseAssetsDetails RIGHT OF USE ASSETS (Details) Details http://www.telecom.com.ar/role/DisclosureRightOfUseAssetsTables 105 false false R106.htm 41201 - Disclosure - TRADE PAYABLES (Details) Sheet http://www.telecom.com.ar/role/DisclosureTradePayablesDetails TRADE PAYABLES (Details) Details http://www.telecom.com.ar/role/DisclosureTradePayablesTables 106 false false R107.htm 41301 - Disclosure - BORROWINGS (Details) Sheet http://www.telecom.com.ar/role/DisclosureBorrowingsDetails BORROWINGS (Details) Details http://www.telecom.com.ar/role/DisclosureBorrowingsTables 107 false false R108.htm 41302 - Disclosure - BORROWINGS - Movements in Borrowings (Details) Sheet http://www.telecom.com.ar/role/DisclosureBorrowingsMovementsInBorrowingsDetails BORROWINGS - Movements in Borrowings (Details) Details 108 false false R109.htm 41303 - Disclosure - BORROWINGS - Global Programs for the issuance of Notes (Details) Notes http://www.telecom.com.ar/role/DisclosureBorrowingsGlobalProgramsForIssuanceOfNotesDetails BORROWINGS - Global Programs for the issuance of Notes (Details) Details 109 false false R110.htm 41304 - Disclosure - BORROWINGS- Bank and other financing entities loans (Details) Sheet http://www.telecom.com.ar/role/DisclosureBorrowingsBankAndOtherFinancingEntitiesLoansDetails BORROWINGS- Bank and other financing entities loans (Details) Details 110 false false R111.htm 41401 - Disclosure - SALARIES AND SOCIAL SECURITY PAYABLES - Payables (Details) Sheet http://www.telecom.com.ar/role/DisclosureSalariesAndSocialSecurityPayablesPayablesDetails SALARIES AND SOCIAL SECURITY PAYABLES - Payables (Details) Details 111 false false R112.htm 41501 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Breakdown of income tax payable, net (Details) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesBreakdownOfIncomeTaxPayableNetDetails INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Breakdown of income tax payable, net (Details) Details 112 false false R113.htm 41502 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Deferred income tax assets and liabilities, net (Details) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesDeferredIncomeTaxAssetsAndLiabilitiesNetDetails INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Deferred income tax assets and liabilities, net (Details) Details 113 false false R114.htm 41503 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Maturities of estimated tax carryforward (Details) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesMaturitiesOfEstimatedTaxCarryforwardDetails INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Maturities of estimated tax carryforward (Details) Details 114 false false R115.htm 41504 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Income tax (expense) benefit (Details) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesIncomeTaxExpenseBenefitDetails INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Income tax (expense) benefit (Details) Details http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesTables 115 false false R116.htm 41505 - Disclosure - INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Reconciliation of income tax (expense) benefit (Details) Sheet http://www.telecom.com.ar/role/DisclosureIncomeTaxPayableAndDeferredIncomeTaxAssetsLiabilitiesReconciliationOfIncomeTaxExpenseBenefitDetails INCOME TAX PAYABLE AND DEFERRED INCOME TAX ASSETS/LIABILITIES - Reconciliation of income tax (expense) benefit (Details) Details 116 false false R117.htm 41601 - Disclosure - OTHER TAXES PAYABLES (Details) Sheet http://www.telecom.com.ar/role/DisclosureOtherTaxesPayablesDetails OTHER TAXES PAYABLES (Details) Details http://www.telecom.com.ar/role/DisclosureOtherTaxesPayablesTables 117 false false R118.htm 41701 - Disclosure - LEASE LIABILITIES (Details) Sheet http://www.telecom.com.ar/role/DisclosureLeaseLiabilitiesDetails LEASE LIABILITIES (Details) Details http://www.telecom.com.ar/role/DisclosureLeaseLiabilitiesTables 118 false false R119.htm 41702 - Disclosure - LEASE LIABILITIES - Movements in the lease liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureLeaseLiabilitiesMovementsInLeaseLiabilitiesDetails LEASE LIABILITIES - Movements in the lease liabilities (Details) Details 119 false false R120.htm 41801 - Disclosure - OTHER LIABILITIES (Details) Sheet http://www.telecom.com.ar/role/DisclosureOtherLiabilitiesDetails OTHER LIABILITIES (Details) Details http://www.telecom.com.ar/role/DisclosureOtherLiabilitiesTables 120 false false R121.htm 41802 - Disclosure - OTHER LIABILITIES - Movements in the pension benefits (Details) Sheet http://www.telecom.com.ar/role/DisclosureOtherLiabilitiesMovementsInPensionBenefitsDetails OTHER LIABILITIES - Movements in the pension benefits (Details) Details 121 false false R122.htm 41901 - Disclosure - PROVISIONS - Rollforward (Details) Sheet http://www.telecom.com.ar/role/DisclosureProvisionsRollforwardDetails PROVISIONS - Rollforward (Details) Details 122 false false R123.htm 41902 - Disclosure - PROVISIONS - Probable contingent Liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureProvisionsProbableContingentLiabilitiesDetails PROVISIONS - Probable contingent Liabilities (Details) Details 123 false false R124.htm 41903 - Disclosure - PROVISIONS - Possible Contingencies (Details) Sheet http://www.telecom.com.ar/role/DisclosureProvisionsPossibleContingenciesDetails PROVISIONS - Possible Contingencies (Details) Details 124 false false R125.htm 41904 - Disclosure - PROVISIONS - Contingent Asset - "AFA Plus Project" Claim (Details) Sheet http://www.telecom.com.ar/role/DisclosureProvisionsContingentAssetafaPlusProjectClaimDetails PROVISIONS - Contingent Asset - "AFA Plus Project" Claim (Details) Details 125 false false R126.htm 42001 - Disclosure - PURCHASE COMMITMENTS (Details) Sheet http://www.telecom.com.ar/role/DisclosurePurchaseCommitmentsDetails PURCHASE COMMITMENTS (Details) Details http://www.telecom.com.ar/role/DisclosurePurchaseCommitmentsTables 126 false false R127.htm 42002 - Disclosure - PURCHASE COMMITMENTS - Commitments within one year and beyond one year (Details) Sheet http://www.telecom.com.ar/role/DisclosurePurchaseCommitmentsCommitmentsWithinOneYearAndBeyondOneYearDetails PURCHASE COMMITMENTS - Commitments within one year and beyond one year (Details) Details 127 false false R128.htm 42101 - Disclosure - EQUITY - Capital stock (Details) Sheet http://www.telecom.com.ar/role/DisclosureEquityCapitalStockDetails EQUITY - Capital stock (Details) Details 128 false false R129.htm 42102 - Disclosure - EQUITY - Provisions of the Telecom Ordinary and Extraordinary Shareholders' meeting (Details) Sheet http://www.telecom.com.ar/role/DisclosureEquityProvisionsOfTelecomOrdinaryAndExtraordinaryShareholdersMeetingDetails EQUITY - Provisions of the Telecom Ordinary and Extraordinary Shareholders' meeting (Details) Details 129 false false R130.htm 42103 - Disclosure - EQUITY - Share Ownership Plan (Details) Sheet http://www.telecom.com.ar/role/DisclosureEquityShareOwnershipPlanDetails EQUITY - Share Ownership Plan (Details) Details 130 false false R131.htm 42201 - Disclosure - FINANCIAL INSTRUMENTS - Categories of financial assets and financial liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsCategoriesOfFinancialAssetsAndFinancialLiabilitiesDetails FINANCIAL INSTRUMENTS - Categories of financial assets and financial liabilities (Details) Details 131 false false R132.htm 42202 - Disclosure - FINANCIAL INSTRUMENTS - Financial assets and liabilities recognized at fair value (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsFinancialAssetsAndLiabilitiesRecognizedAtFairValueDetails FINANCIAL INSTRUMENTS - Financial assets and liabilities recognized at fair value (Details) Details 132 false false R133.htm 42203 - Disclosure - FINANCIAL INSTRUMENTS - Fair value hierarchy and other disclosures (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsFairValueHierarchyAndOtherDisclosuresDetails FINANCIAL INSTRUMENTS - Fair value hierarchy and other disclosures (Details) Details 133 false false R134.htm 42204 - Disclosure - FINANCIAL INSTRUMENTS - Position of DFIs statements of financial positions, income statements, comprehensive Income (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsPositionOfDfisStatementsOfFinancialPositionsIncomeStatementsComprehensiveIncomeDetails FINANCIAL INSTRUMENTS - Position of DFIs statements of financial positions, income statements, comprehensive Income (Details) Details 134 false false R135.htm 42205 - Disclosure - FINANCIAL INSTRUMENTS - Hedge accounting (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsHedgeAccountingDetails FINANCIAL INSTRUMENTS - Hedge accounting (Details) Details 135 false false R136.htm 42206 - Disclosure - FINANCIAL INSTRUMENTS - Offsetting of financial assets and financial liabilities (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialInstrumentsOffsettingOfFinancialAssetsAndFinancialLiabilitiesDetails FINANCIAL INSTRUMENTS - Offsetting of financial assets and financial liabilities (Details) Details 136 false false R137.htm 42301 - Disclosure - REVENUES (Details) Sheet http://www.telecom.com.ar/role/DisclosureRevenuesDetails REVENUES (Details) Details http://www.telecom.com.ar/role/DisclosureRevenuesTables 137 false false R138.htm 42401 - Disclosure - OPERATING EXPENSES (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesDetails OPERATING EXPENSES (Details) Details http://www.telecom.com.ar/role/DisclosureOperatingExpensesTables 138 false false R139.htm 42402 - Disclosure - OPERATING EXPENSES - Fees for services, maintenance, materials and supplies (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesFeesForServicesMaintenanceMaterialsAndSuppliesDetails OPERATING EXPENSES - Fees for services, maintenance, materials and supplies (Details) Details 139 false false R140.htm 42403 - Disclosure - OPERATING EXPENSES - Taxes and Fees with the Regulatory Authority (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesTaxesAndFeesWithRegulatoryAuthorityDetails OPERATING EXPENSES - Taxes and Fees with the Regulatory Authority (Details) Details 140 false false R141.htm 42404 - Disclosure - OPERATING EXPENSES - Cost of equipment and handsets (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesCostOfEquipmentAndHandsetsDetails OPERATING EXPENSES - Cost of equipment and handsets (Details) Details 141 false false R142.htm 42405 - Disclosure - OPERATING EXPENSES - Other operating expenses (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesOtherOperatingExpensesDetails OPERATING EXPENSES - Other operating expenses (Details) Details 142 false false R143.htm 42406 - Disclosure - OPERATING EXPENSES - Depreciation & Amortization (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesDepreciationAmortizationDetails OPERATING EXPENSES - Depreciation & Amortization (Details) Details 143 false false R144.htm 42407 - Disclosure - OPERATING EXPENSES - Expenses disclosed per function (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesExpensesDisclosedPerFunctionDetails OPERATING EXPENSES - Expenses disclosed per function (Details) Details 144 false false R145.htm 42408 - Disclosure - OPERATING EXPENSES - Future minimum lease payments (Details) Sheet http://www.telecom.com.ar/role/DisclosureOperatingExpensesFutureMinimumLeasePaymentsDetails OPERATING EXPENSES - Future minimum lease payments (Details) Details 145 false false R146.htm 42501 - Disclosure - FINANCIAL RESULTS, NET (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialResultsNetDetails FINANCIAL RESULTS, NET (Details) Details http://www.telecom.com.ar/role/DisclosureFinancialResultsNetTables 146 false false R147.htm 42601 - Disclosure - FINANCIAL RISK MANAGEMENT - Market risk (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementMarketRiskDetails FINANCIAL RISK MANAGEMENT - Market risk (Details) Details 147 false false R148.htm 42602 - Disclosure - FINANCIAL RISK MANAGEMENT - Sensitivity analysis of exchange and interest rate risk (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementSensitivityAnalysisOfExchangeAndInterestRateRiskDetails FINANCIAL RISK MANAGEMENT - Sensitivity analysis of exchange and interest rate risk (Details) Details 148 false false R149.htm 42603 - Disclosure - FINANCIAL RISK MANAGEMENT - Interest rate risk (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementInterestRateRiskDetails FINANCIAL RISK MANAGEMENT - Interest rate risk (Details) Details 149 false false R150.htm 42604 - Disclosure - FINANCIAL RISK MANAGEMENT - Credit risk (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementCreditRiskDetails FINANCIAL RISK MANAGEMENT - Credit risk (Details) Details 150 false false R151.htm 42605 - Disclosure - FINANCIAL RISK MANAGEMENT - Maturity analysis of financial liabilities and Capital management (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementMaturityAnalysisOfFinancialLiabilitiesAndCapitalManagementDetails FINANCIAL RISK MANAGEMENT - Maturity analysis of financial liabilities and Capital management (Details) Details 151 false false R152.htm 42606 - Disclosure - FINANCIAL RISK MANAGEMENT - Liquidity risk (Details) Sheet http://www.telecom.com.ar/role/DisclosureFinancialRiskManagementLiquidityRiskDetails FINANCIAL RISK MANAGEMENT - Liquidity risk (Details) Details 152 false false R153.htm 42701 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Controlling Company (Details) Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedPartiesControllingCompanyDetails BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Controlling Company (Details) Details 153 false false R154.htm 42702 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Balances with related parties (Details) Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedPartiesBalancesWithRelatedPartiesDetails BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Balances with related parties (Details) Details 154 false false R155.htm 42703 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Transactions with Related parties (Details) Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedPartiesTransactionsWithRelatedPartiesDetails BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Transactions with Related parties (Details) Details 155 false false R156.htm 42704 - Disclosure - BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Key Managers (Details) Sheet http://www.telecom.com.ar/role/DisclosureBalancesAndTransactionsWithRelatedPartiesKeyManagersDetails BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Key Managers (Details) Details 156 false false R157.htm 42801 - Disclosure - BUSINESS ACQUISITION - TMSA (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionTmsaDetails BUSINESS ACQUISITION - TMSA (Details) Details 157 false false R158.htm 42802 - Disclosure - BUSINESS ACQUISITION - TSMA - Purchase Consideration (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionTsmaPurchaseConsiderationDetails BUSINESS ACQUISITION - TSMA - Purchase Consideration (Details) Details 158 false false R159.htm 42803 - Disclosure - BUSINESS ACQUISITION - TSMA - Assets & Liabilities acquired (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionTsmaAssetsLiabilitiesAcquiredDetails BUSINESS ACQUISITION - TSMA - Assets & Liabilities acquired (Details) Details 159 false false R160.htm 42804 - Disclosure - BUSINESS ACQUISITION - Naperville and Saturn (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionNapervilleAndSaturnDetails BUSINESS ACQUISITION - Naperville and Saturn (Details) Details 160 false false R161.htm 42805 - Disclosure - BUSINESS ACQUISITION - Exercise call option (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionExerciseCallOptionDetails BUSINESS ACQUISITION - Exercise call option (Details) Details 161 false false R162.htm 42806 - Disclosure - BUSINESS ACQUISITION - Purchase Consideration of Naperville (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionPurchaseConsiderationOfNapervilleDetails BUSINESS ACQUISITION - Purchase Consideration of Naperville (Details) Details 162 false false R163.htm 42807 - Disclosure - BUSINESS ACQUISITION - Assets and liabilities of Naperville (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionAssetsAndLiabilitiesOfNapervilleDetails BUSINESS ACQUISITION - Assets and liabilities of Naperville (Details) Details 163 false false R164.htm 42808 - Disclosure - BUSINESS ACQUISITION - Transaction non-controlling interest (Details) Sheet http://www.telecom.com.ar/role/DisclosureBusinessAcquisitionTransactionNonControllingInterestDetails BUSINESS ACQUISITION - Transaction non-controlling interest (Details) Details 164 false false R165.htm 42901 - Disclosure - SUBSEQUENT EVENTS (Details) Sheet http://www.telecom.com.ar/role/DisclosureSubsequentEventsDetails SUBSEQUENT EVENTS (Details) Details http://www.telecom.com.ar/role/DisclosureSubsequentEvents 165 false false All Reports Book All Reports teo-20241231.xsd teo-20241231_cal.xml teo-20241231_def.xml teo-20241231_lab.xml teo-20241231_pre.xml teo-20241231x6k.htm teo-20241231x6k001.jpg http://xbrl.sec.gov/dei/2025 https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full true true