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Benefit plans (Details 2) - ARS ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Benefit Plans      
Cost $ 284 $ 1,165 $ 402
Interest 2,144 2,578 4,178
Actuarial results - Other comprehensive results 1,447 2,037 (1,215)
Benefit plan charge  $ 3,875 $ 5,780 $ 3,365