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Fixed assets
 12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Fixed assets
Note 13 - Fixed assets
 
    
12/31/2021
  
Fixed Assets
(1)
  
Annual

depreciation

rates
     
Cost
     
Depreciation
    
Impairment
    
Residual
  
Real estate
            
 
7,372
 
   
 
(4,089
) 
  
 
(110
) 
  
 
3,173
 
Land
      —          1,127        —         —         1,127  
Buildings and Improvements
      4% to 10%        6,245        (4,089 )      (110 )      2,046  
Other fixed assets
            
 
14,659
 
   
 
(10,832
) 
  
 
(37
) 
  
 
3,790
 
Installations and furniture
      10% to 20%        3,312        (2,463 )      (10 )      839  
Data processing systems
      20% to 50%        9,094        (7,170 )      (27 )      1,897  
Other
(2)
     10% to 20%        2,253        (1,199 )      —         1,054  
             
 
 
     
 
 
    
 
 
    
 
 
  
Total
            
 
22,031
 
   
 
(14,921
) 
  
 
(147
) 
  
 
6,963
 
             
 
 
     
 
 
    
 
 
    
 
 
  
 
(1)
The contractual commitments for purchase of the fixed assets totaled R$ 3, achievable by 2022 (Note 32b 3.2 - Off balance commitments).
(2)
Others refer to negotiations of Fixed assets in progress and other Communication, Security and Transportation equipment.
 
    
12/31/2020
  
Fixed Assets
(1)
  
Annual
depreciation
rates
     
Cost
     
Depreciation
    
Impairment
    
Residual
  
Real estate
            
 
7,106
 
   
 
(3,735
) 
  
 
(115
) 
  
 
3,256
 
Land
      —          1,102        —         —         1,102  
Buildings and Improvements
      4% to 10%        6,004        (3,735 )      (115 )      2,154  
Other fixed assets
            
 
13,492
 
   
 
(9,779
) 
  
 
(32
) 
  
 
3,681
 
Installations and furniture
      10% to 20%        3,248        (2,271 )      (5 )      972  
Data processing systems
      20% to 50%        8,274        (6,400 )      (27 )      1,847  
Other
(2)
     10% to 20%        1,970        (1,108 )      —         862  
             
 
 
     
 
 
    
 
 
    
 
 
  
Total
            
 
20,598
 
   
 
(13,514
) 
  
 
(147
) 
  
 
6,937
 
             
 
 
     
 
 
    
 
 
    
 
 
  
 
(1)
The contractual commitments for purchase of the fixed assets totaled R$ 36, achievable by 2024 (Note 32b 3.2 - Off balance commitments).
(2)
Others refer to negotiations of Fixed assets in progress and other Communication, Security and Transportation equipment.