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Taxes Other than Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2021
Taxes Other than Income Taxes [Abstract]  
Components of Taxes Other than Income Taxes
The following table provides the components of taxes other than income taxes:
     
   
2021
    
2020
  
Regulatory Assessment
  
$
332
    
$
298
  
Property
    
377
      
353
  
Payroll, net of amounts capitalized
    
575
      
551
  
Other
    
4
      
3
  
Total taxes other than income taxes
  
$
1,288
    
$
1,205