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Inventory, Linefill and Long-term Inventory
 9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Inventory, Linefill and Long-term Inventory Inventory, Linefill and Long-term Inventory
 
Inventory, linefill and long-term inventory consisted of the following (barrels in thousands and carrying value in millions):

 September 30, 2025December 31, 2024
 VolumesUnit of
Measure		Carrying
Value
Price/
Unit (1)
VolumesUnit of
Measure		Carrying
Value
Price/
Unit (1)
Inventory        
Crude oil2,021 barrels$122 $60.37 3,321 barrels$221 $66.55 
NGL1,035 barrels51 $49.28 603 barrels26 $43.12 
OtherN/A 11 N/AN/A 14 N/A
Inventory subtotal  184    261  
Linefill        
Crude oil15,762 barrels932 $59.13 15,463 barrels903 $58.40 
NGL32 barrels1 $31.25 32 barrels1 $31.25 
Linefill subtotal  933    904  
Long-term inventory        
Crude oil3,640 barrels226 $62.09 3,413 barrels238 $69.73 
NGL26 barrels1 $38.46 90 barrels4 $44.44 
Long-term inventory subtotal  227    242  
Total  $1,344    $1,407  
(1)Price per unit of measure is comprised of a weighted average associated with various grades, qualities and locations. Accordingly, these prices may not coincide with any published benchmarks for such products.