Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Schedule of Inventory Components

	June 30, 2020		December 31, 2019
Finished goods	$	220	$	305
Work-in-process		254		282
Bauxite and alumina		396		446
Purchased raw materials		392		453
Operating supplies		157		158
	$	1,419	$	1,644