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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consisted of the following:
September 30,
2023
December 31,
2022
 (In millions)
Crude oil and natural gas liquids$81 $63 
Materials and supplies252 154 
Total Inventories$333 $217