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Labor and social obligations (Details 4) - Share options [member]
 12 Months Ended
Dec. 31, 2023
Number
R$ / shares
shares
Dec. 31, 2022
Number
R$ / shares
shares
Dec. 31, 2021
Number
shares
IfrsStatementLineItems [Line Items]      
Weighted average exercise price (in Reais), Outstanding at the beginning R$ 79.47    
Number of stock options, Outstanding at the beginning | Number 3,729,287 3,086,728 2,510,983
Weighted average exercise price (in Reais), Granted R$ 60.83    
Number of stock options, Granted | Number 467,000 1,234,919 1,170,000
Weighted average exercise price (in Reais), Exercised R$ 59.67    
Number of stock options, Exercised | Number (164,214) (442,669)
Weighted average exercise price (in Reais), Stock options exchanged    
Number of stock options, Stock options exchanged | Number (1,751,599)
Weighted average exercise price (in Reais), Forfeited R$ 110.95    
Number of stock options, Forfeited | Number (333,111) (365,749) (60,000)
Weighted average exercise price (in Reais), Expired R$ 94.17    
Number of stock options, Expired | Number (251,299) (226,611) (91,586)
Weighted average exercise price (in Reais), Outstanding at the ending R$ 64.33 R$ 79.47  
Number of stock options, Outstanding at the ending | Number 1,696,064 3,729,287 3,086,728
Weighted average exercise price (in Reais), Exercisable R$ 86.23    
Number of stock options, Exercisable | shares 242,235 1,133,774 542,061