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DESCRIPTION OF BUSINESS AND BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS - Segment financial information as per geographical area (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Geographic information |  |  |
Sales revenues | $ 301,596 | $ 322,686 | $ 351,948
Financial debt | 200,200 | 206,928 |
Services rendered in Argentina |  |  |
Geographic information |  |  |
CAPEX | 50,085 | 82,209 | 81,211
PP&E, Goodwill and Intangible assets | 668,147 | 685,122 |
Financial debt | 194,487 | 201,349 |
Other abroad segments |  |  |
Geographic information |  |  |
CAPEX | 5,647 | 6,947 | 7,726
PP&E, Goodwill and Intangible assets | 26,422 | 27,153 |
Financial debt | 5,713 | 5,579 |
Argentina |  |  |
Geographic information |  |  |
Sales revenues | 280,625 | 300,957 | 331,370
Abroad |  |  |
Geographic information |  |  |
Sales revenues | $ 20,971 | $ 21,729 | $ 20,578

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