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Insurance contracts and contingencies (Details) - Legal proceedings contingent liability [member] - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
Balance as of beginning of the year R$ 195,854 R$ 148,287 R$ 53,139
Business combinations 152   80,252
Additions 18,336 73,909 24,744
Reversals (109,981) (26,342) (9,848)
Balance as of ending of the year 104,361 195,854 148,287
Labour [Member]      
IfrsStatementLineItems [Line Items]      
Balance as of beginning of the year 22,484 25,490 4,519
Business combinations 64   16,597
Additions 3,424 2,300 5,418
Reversals (3,251) (5,306) (1,044)
Balance as of ending of the year 22,721 22,484 25,490
Civil [Member]      
IfrsStatementLineItems [Line Items]      
Balance as of beginning of the year 24,664 22,928 13,280
Business combinations 88   6,017
Additions 5,875 7,911 5,101
Reversals (9,327) (6,175) (1,470)
Balance as of ending of the year 21,300 24,664 22,928
Taxes [Member]      
IfrsStatementLineItems [Line Items]      
Balance as of beginning of the year 148,706 99,869 35,340
Business combinations   57,638
Additions 9,037 63,698 14,225
Reversals (97,403) (14,861) (7,334)
Balance as of ending of the year R$ 60,340 R$ 148,706 R$ 99,869