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Inventories (Tables)
3 Months Ended
Mar. 31, 2018
Inventory, Net [Abstract]  
Schedule Of Inventory
Inventories consisted of the following:
 
March 31, 2018
 
December 31, 2017
Natural gas, NGLs, and refined products
$
812

 
$
1,120

Crude oil
701

 
551

Spare parts and other
348

 
351

Total inventories
$
1,861

 
$
2,022