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Related Parties (Tables)
12 Months Ended
Dec. 31, 2021
Text block [abstract]  
Summary of Compensation of Key Management Personnel A summary of compensation of key management personnel is as follows.
 
For the years ended December 31,
 
2021
       2020  
Short-term employee benefits
 
$
65
 
     $ 69  
Post-employment benefits
 
 
5
 
       5  
Share-based payments
 
 
57
 
       57  
Termination benefits
 
 
 
        
Other long-term benefits
 
 
2
 
       3  
Total
 
$
  129
 
     $   134