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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory Components

 

 

June 30, 2021

 

 

December 31, 2020

 

Finished goods

 

$

283

 

 

$

321

 

Work-in-process

 

 

184

 

 

 

112

 

Bauxite and alumina

 

 

460

 

 

 

412

 

Purchased raw materials

 

 

444

 

 

 

377

 

Operating supplies

 

 

176

 

 

 

176

 

 

 

$

1,547

 

 

$

1,398