Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory Components

	June 30, 2016		December 31, 2015
Finished goods	$	827	$	811
Work-in-process		1,344		1,272
Bauxite and alumina		416		445
Purchased raw materials		650		720
Operating supplies		201		194
	$	3,438	$	3,442