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Provisions and contingent liabilities - Additional information (Details)
R$ in Thousands
Dec. 31, 2025
BRL (R$)
claim
Dec. 31, 2024
BRL (R$)
claim
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
BRL (R$)
Disclosure of contingent liabilities [line items]        
Other provisions R$ 191,651 R$ 146,173 R$ 97,678 R$ 43,541
Estimated financial effect of contingent liabilities 3,703,191 2,481,746    
Tax        
Disclosure of contingent liabilities [line items]        
Estimated financial effect of contingent liabilities 2,105,051 1,338,518    
Civil        
Disclosure of contingent liabilities [line items]        
Other provisions R$ 75,424 R$ 58,738    
Number of civil and administrative claims for which the likelihood of loss has been classified as probable | claim 712 681    
Estimated financial effect of contingent liabilities R$ 1,429,045 R$ 970,615    
Labor Contingent Liability [Member]        
Disclosure of contingent liabilities [line items]        
Other provisions R$ 114,687 R$ 85,895    
Number of civil and administrative claims for which the likelihood of loss has been classified as probable | claim 365 275    
Estimated financial effect of contingent liabilities R$ 169,095 R$ 172,613