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Commissions Income (Tables)
 12 Months Ended
Dec. 31, 2020
Statement [LineItems]  
Summary of Commissions Income
Description
  12/31/2020   12/31/2019   12/31/2018 
Performance obligations satisfied at a point in time
      
Commissions related to obligations
   12,993,348    15,155,762    17,940,508 
Commissions related to credit cards
   8,410,516    8,075,227    8,885,346 
Commissions related to insurance
   1,601,339    1,591,978    1,766,846 
Commissions related to securities value
   544,485    371,863    218,240 
Commissions related to trading and foreign exchange transactions
   536,763    620,678    567,002 
Commissions related to loans and other financing
   183,726    217,173    185,144 
Commissions related to financial guarantees granted
   1,159    5,408    857 
Performance obligations satisfied over certain time period
      
Commissions related to credit cards
   427,955    361,896    320,505 
Commissions related to trading and foreign exchange transactions
   41,900    46,232    41,922 
Commissions related to obligations
   843    3,873    11,491 
Commissions related to loans and other financing
   732    14,562    11,986 
Commissions related to financial guarantees granted
   1    3,027    2,022 
  
 
 
   
 
 
   
 
 
 
  
 
24,742,767
 
  
 
26,467,679
 
  
 
29,951,869