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Financial Instruments Risks - Evolution of Total VaR (Details) - ARS ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Average value at risk [member]    
Value at risk [line items]    
Total value at risk $ 81,600 $ 22,860
Value at risk per interest rate 71,970 19,000
Value at risk per exchange rate 25,850 9,640
Minimum value at risk [member]    
Value at risk [line items]    
Total value at risk 11,550 4,970
Value at risk per interest rate 8,260 3,130
Value at risk per exchange rate 850 280
Maximum value at risk [member]    
Value at risk [line items]    
Total value at risk 273,420 97,370
Value at risk per interest rate 234,320 93,760
Value at risk per exchange rate 155,020 37,980
Closing value at risk [member]    
Value at risk [line items]    
Total value at risk 43,570 49,360
Value at risk per interest rate 43,990 49,900
Value at risk per exchange rate $ 3,920 $ 2,650