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Inventories (Tables)
12 Months Ended
Dec. 31, 2024
Inventories [Abstract]  
Inventory Amounts by Product Type
Our inventory amounts by product type were as follows at the dates indicated:

 
 
December 31,
 
 
 
2024
   
2023
 
NGLs
 
$
2,768
   
$
2,392
 
Petrochemicals and refined products
   
652
     
536
 
Crude oil
   
523
     
419
 
Natural gas
   
12
     
5
 
Total
 
$
3,955
   
$
3,352
 
Cost of Sales and Lower of Cost or Market Adjustments
The following table presents our total cost of sales amounts and lower of cost or net realizable value adjustments for the years indicated:

 
For the Year Ended December 31,
 
 
2024
 
2023
 
2022
 
Cost of sales (1)
 
$
42,580
   
$
37,023
   
$
45,836
 
Lower of cost or net realizable value adjustments recognized in cost of sales
   
9
     
31
     
19
 

(1)
Cost of sales is a component of “Operating costs and expenses,” as presented on our Statements of Consolidated Operations.  Fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.