Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory Components

	March 31, 2016		December 31, 2015
Finished goods	$	846	$	811
Work-in-process		1,312		1,272
Bauxite and alumina		423		445
Purchased raw materials		762		720
Operating supplies		206		194
	$	3,549	$	3,442