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Trade Accounts Receivable (Tables)
 12 Months Ended
Dec. 31, 2021
Text block [abstract]  
Summary of Trade Accounts Receivable
As of December 31, 2021 and 2020, consolidated trade accounts receivable consisted of:
 
 
  
2021
 
 
2020
 
Trade accounts receivable
    $ 1,622       1,654  
Allowances for expected credit losses
      (101 )      (121 ) 
      
 
    
 
 
  
     $ 1,521       1,533  
      
 
    
 
 
  
Summary of Trade Accounts Receivable and Allowance for Expected Credit Loss
As of December 31, 2021, the balances of trade accounts receivable and the allowance for Expected Credit Losses (“ECL”) were as follows:
 
 
  
Accounts
receivable
 
  
ECL
allowance
 
  
ECL
average
rate
 
Mexico
    $ 253        31        12.3 % 
United States
      503        6        1.2 % 
Europe, Middle East, Africa and Asia
      742        47        6.3 % 
South, Central America and the Caribbean
      82        13        15.9 % 
Others
      42        4        9.5 % 
      
 
     
 
 
           
     $ 1,622        101           
      
 
     
 
 
           
Summary of Allowance for Expected Credit Losses
Changes in the allowance for expected credit losses in 2021, 2020 and 2019, were as follows:
 
 
  
2021
 
 
2020
 
 
2019
 
Allowances for expected credit losses at beginning of period
    $ 121       116       119  
Charged to selling expenses
      1       23       12  
Deductions
      (16 )      (19 )      (16 ) 
Reclassification to assets held for sale (note 5.2)
      (2 )      —         —    
Foreign currency translation effects
      (3 )      1       1  
      
 
    
 
 
    
 
 
  
Allowances for expected credit losses at end of period
    $ 101       121       116