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Schedule of goodwill and intangible assets arising from business combination (Details) - BRL (R$)
R$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of operating segments [line items]      
Goodwill R$ 4,031,431 R$ 2,935,577  
Trademarks 1,306,261 1,327,738  
Total 6,245,045 5,220,102 R$ 4,908,079
Other Segments [Member]      
Disclosure of operating segments [line items]      
Goodwill 1,011,828  
Trademarks 298  
Total 1,012,126  
Domestic [Member]      
Disclosure of operating segments [line items]      
Goodwill 1,151,498 1,151,498  
Trademarks 982,478 982,478  
Total 2,133,976 2,133,976  
International [Member]      
Disclosure of operating segments [line items]      
Goodwill 1,868,105 1,784,079  
Trademarks 323,485 345,260  
Total R$ 2,191,590 R$ 2,129,339