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Cash and Cash Equivalents (Tables)
 12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Cash and Cash Equivalents
 
   
2020
   
2019
   
2018
 
Cash and banks
   14,843    6,983    6,678 
Short-term investments
(1)
   5,189    52,079    31,558 
Financial assets at fair value through profit or loss
(2)
   34,586    7,038    7,792 
  
 
 
   
 
 
   
 
 
 
   54,618    66,100    46,028 
  
 
 
   
 
 
   
 
 
 
 
(1)
Includes term deposits and other invetsments with the BNA for 2,000, 10,043 and 5,084 as of December 31, 2020, 2019 and 2018, respectively.
(2)
See Note 6.