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Taxes Other than Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2017
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:

 
 
2017
  
2016
  
2015
 
Regulatory Assessment
 
$
231
  
$
243
  
$
242
 
Property
  
344
   
339
   
334
 
Payroll, net of amounts capitalized
  
539
   
530
   
510
 
Capital Stock
  
-
   
1
   
42
 
Other
  
19
   
1
   
1
 
Total taxes other than income taxes
 
$
1,133
  
$
1,114
  
$
1,129