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EQUITY - Summary (Details) - ARS ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
EQUITY        
Equity attributable to Controlling Company $ 305,078 $ 347,186    
Equity attributable to non-controlling interest (Note 1.a) 4,768 4,964    
TOTAL EQUITY (See Consolidated Statements of Changes in Equity) $ 309,846 $ 352,150 $ 84,654 $ 84,108