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27 Other payables (Details) - ARS ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Summary of other payables [line items]    
Noncurrent $ 6,285 $ 5,472
Current 2,999 4,895
ENRE penalties and discounts [member]    
Summary of other payables [line items]    
Noncurrent 6,224 5,353
Current 2,675 4,610
Finance lease liability [member]    
Summary of other payables [line items]    
Noncurrent [1] 61 119
Current [1] 295 182
Related parties [member]    
Summary of other payables [line items]    
Current 15 17
Advances for works to be performed [member]    
Summary of other payables [line items]    
Current 13 8
Payment agreements with ENRE [member]    
Summary of other payables [line items]    
Current   66
Other [member]    
Summary of other payables [line items]    
Current $ 1 $ 12
[1] The development of the financial lease liability is as follows: