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EQUITY - Acquisition of Treasury Shares (Details) $ / shares in Units, $ in Millions |  | 5 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 05, 2019 ARS ($) $ / shares | Nov. 05, 2019 ARS ($) Vote $ / shares shares | Nov. 05, 2013 shares | Dec. 31, 2020 $ / shares | Dec. 31, 2019 $ / shares
Equity |  |  |  |  |
Treasury shares acquired | shares |  |  | 15,221,373 |  |
Reduction in nominal value of shares |  | $ 15,221,373 |  |  |
Nominal value (in pesos per share) | $ / shares |  |  |  | $ 1 | $ 1
Decrease in its treasury shares | $ 15 |  |  |  |
Decrease in the inflation adjustment | 1,034 |  |  |  |
Decrease in the treasury shares acquisition cost | 3,759 |  |  |  |
Offsetting entry in Retained earnings | $ 2,440 |  |  |  |
Class "B" |  |  |  |  |
Equity |  |  |  |  |
Number of shares cancelled | shares |  | 15,221,373 |  |  |
Nominal value (in pesos per share) | $ / shares | $ 1 | $ 1 |  |  |
Number of vote per share | Vote |  | 1 |  |  |

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