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Inventory, Linefill and Long-term Inventory - Components of Inventory, Linefill and Long-term Inventory (Details)
bbl in Thousands, $ in Millions
Dec. 31, 2024
USD ($)
$ / bbl
bbl
Dec. 31, 2023
USD ($)
$ / bbl
bbl
Inventory by category    
Inventory subtotal, Carrying Value $ 439 $ 548
Linefill subtotal, Carrying Value 968 976
Long-term inventory subtotal, Carrying Value 280 265
Total $ 1,687 $ 1,789
Crude oil    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 3,911 5,877
Linefill, Volumes (in barrels) | bbl 15,521 15,409
Long-term inventory, Volumes (in barrels) | bbl 3,424 3,256
Inventory subtotal, Carrying Value $ 259 $ 383
Linefill subtotal, Carrying Value 906 909
Long-term inventory subtotal, Carrying Value $ 239 $ 232
Inventory (Price/Unit of measure) (in dollars per unit) | $ / bbl 66.22 65.17
Linefill (Price/Unit of measure) (in dollars per unit) | $ / bbl 58.37 58.99
Long-term inventory (Price/Unit of measure) (in dollars per unit) | $ / bbl 69.80 71.25
NGL    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 6,985 5,957
Linefill, Volumes (in barrels) | bbl 2,259 2,168
Long-term inventory, Volumes (in barrels) | bbl 1,355 1,326
Inventory subtotal, Carrying Value $ 166 $ 154
Linefill subtotal, Carrying Value 62 67
Long-term inventory subtotal, Carrying Value $ 41 $ 33
Inventory (Price/Unit of measure) (in dollars per unit) | $ / bbl 23.77 25.85
Linefill (Price/Unit of measure) (in dollars per unit) | $ / bbl 27.45 30.90
Long-term inventory (Price/Unit of measure) (in dollars per unit) | $ / bbl 30.26 24.89
Other    
Inventory by category    
Inventory subtotal, Carrying Value $ 14 $ 11