v3.26.1
Earnings per share - Schedule of Diluted Earnings Per Share (Details)
R$ / shares in Units, R$ in Millions
 12 Months Ended
Dec. 31, 2025
BRL (R$)
R$ / shares
shares
Dec. 31, 2024
BRL (R$)
R$ / shares
shares
Dec. 31, 2023
BRL (R$)
R$ / shares
shares
Dec. 30, 2025
Mar. 20, 2025
Disclosure of classes of share capital [line items]          
Net income attributable to owners of the parent company R$ 44,857 R$ 41,085 R$ 33,105    
Bonus share issuance ratio       0.03 0.10
Preferred          
Disclosure of classes of share capital [line items]          
Net income attributable to owners of the parent company 22,109 20,274 16,351    
Dividends on preferred shares after dilution effects 227 149 101    
Net income available to preferred equity owners considering preferred shares after the dilution effect R$ 22,336 R$ 20,423 R$ 16,452    
Adjusted weighted average of shares, Common (in shares) | shares 5,571,684,620 5,552,704,085 5,549,980,489    
Adjusted weighted average of shares Common, Preferred (in shares) | shares 5,571,684,620 5,552,704,085 5,549,980,489    
Adjusted weighted average of shares Common, Preferred (in shares) | shares 5,459,926,630 5,472,801,129 5,482,580,990    
Incremental as per share-based payment plans (in shares) | shares 111,757,990 79,902,956 67,399,499    
Diluted earnings per share (in brl per share) | R$ / shares R$ 4.01 R$ 3.68 R$ 2.96    
Common          
Disclosure of classes of share capital [line items]          
Net income attributable to owners of the parent company R$ 22,748 R$ 20,811 R$ 16,754    
Dividends on preferred shares after dilution effects (227) (149) (101)    
Net income available to preferred equity owners considering preferred shares after the dilution effect R$ 22,521 R$ 20,662 R$ 16,653    
Adjusted weighted average of shares, Common (in shares) | shares 5,617,742,977 5,617,742,977 5,617,742,977    
Adjusted weighted average of shares Common, Preferred (in shares) | shares 5,617,742,977 5,617,742,977 5,617,742,977    
Diluted earnings per share (in brl per share) | R$ / shares R$ 4.01 R$ 3.68 R$ 2.96