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INVENTORIES
3 Months Ended
Mar. 31, 2023
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:

millionsMarch 31, 2023December 31, 2022
Raw materials$125 $120 
Materials and supplies958 913 
Commodity inventory and finished goods1,349 1,147 
2,432 2,180 
Revaluation to LIFO(121)(121)
Total
$2,311 $2,059