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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Statement [LineItems]  
Summary of Changes in Intangible Assets
The changes in intangible assets during the fiscal years ended on December 31, 2020 and 2019 are as follow:
 
   
12/31/2020
 
Item
  
Original
Value at
beginning
of fiscal
year
   
Useful life
estimated
in years
   
Increases
   
Decreases
   
Depreciation for the fiscal year
   
Residual
value at

the end of
the fiscal
year
 
  
Accumulated
at the
beginning
   
Decrease
   
For the

fiscal

year
   
At the

end
 
Cost
                  
Licenses
   2,224,761    5    524,722      911,978    1    514,339    1,426,316    1,323,167 
Other intangible assets
   6,942,583    5    1,688,410    1,192    3,433,183    1,192    1,416,917    4,848,908    3,780,893 
  
 
 
     
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Total intangible assets
   9,167,344      2,213,132    1,192    4,345,161    1,193    1,931,256    6,275,224    5,104,060 
  
 
 
     
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
   
12/31/2019
 
Item
  
Original
Value at
beginning

of fiscal

year
   
Useful life
estimated
in years
   
Increases
   
Decreases
   
Depreciation for the fiscal year
   
Residual
value at

the end of
the fiscal
year
 
  
Accumulated
at the
beginning
   
Decrease
   
For the

fiscal

year
   
At the

end
 
Cost
                  
Licenses
   2,707,929    5    695,936    1,179,104    1,669,510    1,171,274    413,742    911,978    1,312,783 
Other intangible assets
   8,251,282    5    1,618,269    2,926,968    4,848,643    2,760,136    1,344,676    3,433,183    3,509,400 
  
 
 
     
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Total intangible assets (1)
   10,959,211      2,314,205    4,106,072    6,518,153    3,931,410    1,758,418    4,345,161    4,822,183 
  
 
 
     
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
(1)
During fiscal years 2019 there were transfers between lines of the item that produce differences between the amounts at the end of one fiscal year and the beginning of the other without implying modifications of the residual value at the end of the fiscal year.