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Trade receivables (Details 2) - BRL (R$)
R$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Trade Receivables    
Balance at the beginning of the period R$ 1,377,209 R$ 1,428,517
Creation/(reversal) of losses 40,097 (8,449)
Recoveries (40,444) (19,627)
Balance at the end of the period R$ 1,376,862 R$ 1,400,441