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INVENTORIES
12 Months Ended
Dec. 31, 2021
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 as of December 31:

millions20212020
Raw materials$96 $70 
Materials and supplies783 848 
Commodity inventory and finished goods1,066 1,009 
1,945 1,927 
Revaluation to LIFO(99)(29)
Total$1,846 $1,898