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Inventory, Linefill and Long-term Inventory (Details)
bbl in Thousands, $ in Millions
Sep. 30, 2024
USD ($)
$ / bbl
bbl
Dec. 31, 2023
USD ($)
$ / bbl
bbl
Inventory by category    
Inventory subtotal, carrying value $ 436 $ 548
Linefill subtotal, carrying value 991 976
Long-term inventory subtotal, carrying value 257 265
Total $ 1,684 $ 1,789
Crude oil    
Inventory by category    
Inventory, volumes (in barrels) | bbl 2,618 5,877
Linefill, volumes (in barrels) | bbl 15,644 15,409
Long-term inventory, volumes (in barrels) | bbl 3,240 3,256
Inventory subtotal, carrying value $ 180 $ 383
Linefill subtotal, carrying value 925 909
Long-term inventory subtotal, carrying value $ 221 $ 232
Inventory (price/unit of measure) (usd per barrel) | $ / bbl 68.75 65.17
Linefill (price/unit of measure) (usd per barrel) | $ / bbl 59.13 58.99
Long-term inventory (price/unit of measure (usd per barrel) | $ / bbl 68.21 71.25
NGL    
Inventory by category    
Inventory, volumes (in barrels) | bbl 9,425 5,957
Linefill, volumes (in barrels) | bbl 2,243 2,168
Long-term inventory, volumes (in barrels) | bbl 1,355 1,326
Inventory subtotal, carrying value $ 238 $ 154
Linefill subtotal, carrying value 66 67
Long-term inventory subtotal, carrying value $ 36 $ 33
Inventory (price/unit of measure) (usd per barrel) | $ / bbl 25.25 25.85
Linefill (price/unit of measure) (usd per barrel) | $ / bbl 29.42 30.90
Long-term inventory (price/unit of measure (usd per barrel) | $ / bbl 26.57 24.89
Other    
Inventory by category    
Inventory subtotal, carrying value $ 18 $ 11