Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory Components

December 31,	2016			2015
Finished goods	$	226		$	168
Work-in-process		220			206
Bauxite and alumina		429			445
Purchased raw materials		363			385
Operating supplies		137			140
LIFO reserve		(215	)		(172	)
	$	1,160		$	1,172