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Inventory, Linefill and Long-term Inventory (Details)
bbl in Thousands, $ in Millions
Jun. 30, 2022
USD ($)
$ / bbl
bbl
Dec. 31, 2021
USD ($)
$ / bbl
bbl
Inventory by category    
Inventory $ 528 $ 783
Linefill 931 907
Long-term inventory 378 253
Total $ 1,837 $ 1,943
Crude oil    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 2,704 8,041
Linefill, Volumes (in barrels) | bbl 15,239 15,199
Long-term inventory, Volumes (in barrels) | bbl 3,198 2,973
Inventory $ 274 $ 544
Linefill 873 862
Long-term inventory $ 331 $ 209
Inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 101.33 67.65
Linefill (Price/Unit of measure) (in dollars per units) | $ / bbl 57.29 56.71
Long-term inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 103.50 70.30
NGL    
Inventory by category    
Inventory, Volumes (in barrels) | bbl 5,535 6,982
Linefill, Volumes (in barrels) | bbl 1,890 1,633
Long-term inventory, Volumes (in barrels) | bbl 1,072 1,135
Inventory $ 249 $ 234
Linefill 58 45
Long-term inventory $ 47 $ 44
Inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 44.99 33.51
Linefill (Price/Unit of measure) (in dollars per units) | $ / bbl 30.69 27.56
Long-term inventory (Price/Unit of measure) (in dollars per units) | $ / bbl 43.84 38.77
Other    
Inventory by category    
Inventory $ 5 $ 5