Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory Components

	September 30, 2017			December 31, 2016
Finished goods	$	257		$	226
Work-in-process		264			220
Bauxite and alumina		429			429
Purchased raw materials		478			363
Operating supplies		146			137
LIFO reserve		(251	)		(215	)
	$	1,323		$	1,160