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Supplemental Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2022
Supplemental Cash Flow Information [Abstract]  
Net Effect of Changes in Operating Assets and Liabilities
The following table provides information regarding the net effect of changes in our operating accounts and cash payments for interest and income taxes for the periods indicated:

 
  
For the Three Months
Ended March 31,
  
 
  
2022
    
2021
  
Decrease (increase) in:
            
Accounts receivable – trade
  
$
(1,934
)
  
$
(1,215
)
Accounts receivable – related parties
    
(3
)
    
(2
)
Inventories
    
65
      
(96
)
Prepaid and other current assets
    
948
      
158
  
Other assets
    
29
      
2
  
Increase (decrease) in:
                
Accounts payable – trade
    
216
      
84
  
Accounts payable – related parties
    
(105
)
    
(64
)
Accrued product payables
    
2,371
      
1,592
  
Accrued interest
    
(232
)
    
(231
)
Other current liabilities
    
(1,132
)
    
(160
)
Other long-term liabilities
    
(32
)
    
31
  
Net effect of changes in operating accounts
  
$
191
    
$
99
  
                 
Cash payments for interest, net of $17 and $20 capitalized during the
   three months ended March 31, 2022 and 2021, respectively
  
$
540
    
$
541
  
                 
Cash refunds for federal and state income taxes
  
$
(14
)
  
$
(5
)