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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories
NOTE 3 - INVENTORIES

Finished goods primarily represents 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, 2022December 31, 2021
Raw materials$108 $96 
Materials and supplies798 783 
Commodity inventory and finished goods599 1,066 
1,505 1,945 
Revaluation to LIFO(99)(99)
Total
$1,406 $1,846