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Basic and diluted loss per share (Details) - ARS ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Basic And Diluted Loss Per Share      
Profit (loss) $ (17,468) $ (41,577) $ (52,017)
Weighted average number of common shares outstanding 875 875 875
Basic and diluted loss per share – in pesos $ (19.96) $ (47.52) $ (59.45)