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Bonds and financing - Parentheticals (Details 2) - BRL (R$)
R$ in Thousands
12 Months Ended
Mar. 03, 2023
Sep. 28, 2022
Dec. 31, 2023
Bonds and financing      
Borrowings, interest rate basis 100% of the DI   CDI
Somos Sistemas De Ensino S.A. [Member]      
Bonds and financing      
Issued simple debentures, not convertible   R$ 250,000  
Non-current Bonds with related parties [member] | Somos Sistemas De Ensino S.A. [Member]      
Bonds and financing      
Borrowings, interest rate basis   100% of the CDI  
Borrowings, adjustment to interest rate basis   2.40%  
Issued simple debentures, not convertible   R$ 250,000  
Borrowings average maturity   36 months