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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Inventory Disclosure [Abstract]    
Crude oil and natural gas $ 723 $ 676
Materials and supplies 724 722
Total inventories 1,447 1,398
Inventories valued on the LIFO basis $ 409 $ 401