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Shareholders Equity - Additional Information (Detail)
R$ / shares in Units, R$ in Thousands
 12 Months Ended
May 06, 2021
Apr. 30, 2021
Mar. 26, 2021
shares
Feb. 02, 2021
BRL (R$)
shares
Dec. 31, 2021
BRL (R$)
R$ / shares
shares
Dec. 31, 2020
BRL (R$)
Disclosure of classes of share capital [line items]            
Stock Split, Conversion Ratio 0.25 0.25        
Dividend as a percetage of net income         25.00%  
Fully paid in issued capital         R$ 6,365,853 R$ 5,727,478
Amount of shares authorized         R$ 7,000,000  
Common shares [member]            
Disclosure of classes of share capital [line items]            
Treasury shares | shares         5,440,772  
Market value per share | R$ / shares         R$ 2,169  
Shares cancelled | shares       10,000,000    
Shares repurchased | shares     68,000,000   60,000  
Number of shares issued to employees for share-based compensation plans | shares         1,393,156  
Number of shares sold or issued for other than share-based compensation plans | shares         363,263  
Cancellation of treasury shares       R$ 496,916    
Stock Split, Conversion Ratio 0.25 0.25        
Shares repurchased amount         R$ 4,778  
Amount of shares issued to members of share-based criteria plans         4,603  
Amount of cash received from executives         8,428  
Gain generated from cash received from executives         R$ 3,825  
Share repurchase percentage     5.89%      
Number of nominative common shares | shares         1,874,070,932  
Legal reserve            
Disclosure of classes of share capital [line items]            
Percentage of reserve allocation from net income         5.00%  
Threshold percentage limit of capital for legal reserve to be maintained         20.00%