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Inventories
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
(In millions)June 30,
2022
December 31,
2021
Crude oil $4,174 $2,639 
Refined products5,814 4,460 
Materials and supplies1,060 956 
Total$11,048 $8,055 
Inventories are carried at the lower of cost or market value. Costs of crude oil and refined products are aggregated on a consolidated basis for purposes of assessing whether the LIFO cost basis of these inventories may have to be written down to market values.