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Schedule of share-based compensation plan (Details)
 12 Months Ended
Nov. 01, 2021
Number
Jun. 01, 2021
Number
Apr. 26, 2021
Number
Mar. 25, 2021
Number
Jan. 25, 2021
Number
Dec. 31, 2021
Number
R$ / shares
Dec. 31, 2020
Number
R$ / shares
Labor And Social Obligations              
Outstanding at the beginning | R$ / shares           R$ 78.22  
Outstanding at the beginning | Number           2,510,983,000 2,364,214,000
Granted | R$ / shares           R$ 109.18  
Granted | Number 241,000 180,000 139,000 65,000 545,000 1,170,000,000 477,220,000
Forfeited | R$ / shares           R$ 112.89  
Forfeited | Number           (60,000,000) (274,359,000)
Exercised | R$ / shares           R$ 78.15  
Exercised | Number           (442,669,000) (56,092,000)
Expired | R$ / shares           R$ 78.21  
Expired | Number           (91,586,000) (0)
Outstanding at the ending | R$ / shares           R$ 92.33 R$ 78.22
Outstanding at the ending | Number           3,086,728,000 2,510,983,000