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Inventories
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories
NOTE 3 - INVENTORIES

Finished goods primarily represent oil, which is carried at the lower of weighted-average cost or net realizable value, and caustic soda and chlorine, which are valued under the LIFO method. Inventories consisted of the following:

millionsSeptember 30, 2022December 31, 2021
Raw materials$110 $96 
Materials and supplies882 783 
Commodity inventory and finished goods1,044 1,066 
2,036 1,945 
Revaluation to LIFO(99)(99)
Total
$1,937 $1,846