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Financial Items (Tables)
 12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Financial Items
The detail of financial income and other items, net in 2020, 2019 and 2018 was as follows:
 
       
2020
  
2019
  
2018
 
Effects of amortized cost on assets and liabilities and others, net
1
  $     (122)   (59)   (59) 
Results from financial instruments, net (notes 14.2 and 17.4)
     (17)   (1)   39 
Foreign exchange results
     6   (32)   10 
Financial income
     20   21   18 
Others
     3   —     (10) 
    
 
 
  
 
 
  
 
 
 
  $     (110)   (71)   (2)