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SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Significant accounting policies |  |  |
Impairment of Intangible assets | $ 376 |  |
Other fixed assets impairment | $ 573 |  | $ 978
Minimum |  |  |
Significant accounting policies |  |  |
Average useful life of leased assets | 1 year |  |
Maximum |  |  |
Significant accounting policies |  |  |
Average useful life of leased assets | 6 years |  |
Incremental Costs from the Acquisition of Contracts |  |  |
Significant accounting policies |  |  |
Average period for amortization | 2 years |  |
3G/4G licenses |  |  |
Significant accounting policies |  |  |
Average period for amortization | 180 months |  |
Nucleo's licenses - PCS |  |  |
Significant accounting policies |  |  |
Average period for amortization | 60 months |  |
Nucleo's licenses - 700 MHz-band spectrum |  |  |
Significant accounting policies |  |  |
Average period for amortization | 10 years |  |
Internet and data transmission license (Paraguay) |  |  |
Significant accounting policies |  |  |
Average period for amortization | 5 years |  |
Fixed-telephony customers |  |  |
Significant accounting policies |  |  |
Amortized over the estimated term | 10 years |  |
Brand Cablevision |  |  |
Significant accounting policies |  |  |
Amortized over the estimated term | 50 years |  |
Brand Arnet |  |  |
Significant accounting policies |  |  |
Impairment of Intangible assets |  |  | $ 3,401
Spectrum |  |  |
Significant accounting policies |  |  |
Impairment of Intangible assets |  | $ 2,917 |
Other Exclusivity Rights, Rights of Use | Minimum |  |  |
Significant accounting policies |  |  |
Average period for amortization | 5 years |  |
Other Exclusivity Rights, Rights of Use | Maximum |  |  |
Significant accounting policies |  |  |
Average period for amortization | 28 years |  |
Argentina | Mobile telephony customers |  |  |
Significant accounting policies |  |  |
Amortized over the estimated term | 6 years |  |
Paraguay | Mobile telephony customers |  |  |
Significant accounting policies |  |  |
Amortized over the estimated term | 5 years |  |

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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
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