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Accounts receivable from card issuers - Summary of Allowance for Expected Credit Losses (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of Trade receivables [line items]    
Beginning balance R$ 108,434 R$ 80,418
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets 82,946 94,093
Reversal, allowance account for credit losses of financial assets (17,668) (13,181)
Ending balance 117,553 108,434
Accounts Receivable From Card Issuers [Member]    
Disclosure of Trade receivables [line items]    
Beginning balance 22,763 15,103
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets 53,090 22,818
Reversal, allowance account for credit losses of financial assets (20,234) (15,158)
Ending balance R$ 55,619 R$ 22,763