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Inventories
6 Months Ended
Jun. 30, 2023
Inventories  
Inventories

4. Inventories

Major classes of inventory at June 30, 2023, December 31, 2022 and June 30, 2022 are as follows:

June 30,

December 31,

June 30,

    

2023

    

2022

    

2022

Finished goods

$

813

$

667

$

618

Raw materials

 

171

 

137

 

115

Operating supplies

 

53

 

44

 

42

$

1,037

$

848

$

775