Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory Components

	September 30, 2016		December 31, 2015
Finished goods	$	175	$	139
Work-in-process		184		171
Bauxite and alumina		401		445
Purchased raw materials		301		295
Operating supplies		131		122
	$	1,192	$	1,172