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Inventories | 6 Months Ended
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Jun. 30, 2017
Inventory Disclosure [Abstract] |
Inventories | F. Inventories
|  | June 30, 2017 |  |  | December 31, 2016 |
Finished goods |  | $ | 652 |  |  | $ | 625 |
Work-in-process |  |  | 1,300 |  |  |  | 1,144 |
Purchased raw materials |  |  | 383 |  |  |  | 408 |
Operating supplies |  |  | 81 |  |  |  | 76 |
Total inventories |  | $ | 2,416 |  |  | $ | 2,253 |
At June 30, 2017 and December 31, 2016, the total amount of inventories valued on a LIFO basis was $1,057 and $947, respectively. If valued on an average-cost basis, total inventories would have been $401 and $371 higher at June 30, 2017 and December 31, 2016, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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