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Trade receivables (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Trade receivables, gross R$ 647,321 R$ 539,445
(-) Allowance for doubtful accounts (61,398) (44,046)
Trade receivables, net 585,923 495,399
Current 546,438 452,831
Non-current 39,485 42,568
Tuition Fees [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross 461,066 356,074
Educational Content [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross 49,135 50,913
F I E S [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross 62,971 62,325
Educational Credits [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross 29,391 27,535
Mobile App Subscription [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross 29,091 27,675
Others [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivables, gross R$ 15,667 R$ 14,923