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 |