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Related-party transactions (Details) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
Related-party expense $ (15,746) $ (14,076) $ (7,449)
EDELCOS [member]      
IfrsStatementLineItems [Line Items]      
Related-party expense (14,875) (13,241) (5,528)
SACME [member]      
IfrsStatementLineItems [Line Items]      
Related-party expense (633) (735) (1,921)
AndinaPLC [member]      
IfrsStatementLineItems [Line Items]      
Related-party expense (229) (84)
Estudio Cuneo Libarona Abogados [Member]      
IfrsStatementLineItems [Line Items]      
Related-party expense (7) (16)
Grieco Maria Teresa [Member]      
IfrsStatementLineItems [Line Items]      
Related-party expense $ (2)