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Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consisted of the following:
June 30,
2023
December 31,
2022
 (In millions)
Crude oil and natural gas liquids$84 $63 
Materials and supplies194 154 
Total Inventories$278 $217