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Inventory, Linefill and Long-term Inventory (Details)
bbl in Thousands, $ in Millions
Sep. 30, 2022
USD ($)
$ / bbl
bbl
Dec. 31, 2021
USD ($)
$ / bbl
bbl
Inventory by category    
Inventory $ 603 $ 783
Linefill 954 907
Long-term inventory 301 253
Total $ 1,858 $ 1,943
Crude oil    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 2,830 8,041
Linefill, Volumes (in barrels) | bbl 15,499 15,199
Long-term inventory, Volumes (in barrels) | bbl 3,079 2,973
Inventory $ 207 $ 544
Linefill 900 862
Long-term inventory $ 259 $ 209
Inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 73.14 67.65
Linefill (Price/Unit of measure) (in dollars per units) | $ / bbl 58.07 56.71
Long-term inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 84.12 70.30
NGL    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 9,698 6,982
Linefill, Volumes (in barrels) | bbl 1,894 1,633
Long-term inventory, Volumes (in barrels) | bbl 1,069 1,135
Inventory $ 389 $ 234
Linefill 54 45
Long-term inventory $ 42 $ 44
Inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 40.11 33.51
Linefill (Price/Unit of measure) (in dollars per units) | $ / bbl 28.51 27.56
Long-term inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 39.29 38.77
Other    
Inventory by category    
Inventory $ 7 $ 5