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Inventories

6 Months Ended

Jun. 30, 2013

D. Inventories


	June 30, 2013		December 31, 2012
Finished goods	$	580	$	542
Work-in-process		925		866
Bauxite and alumina		649		618
Purchased raw materials		502		536
Operating supplies		249		263

	$	2,905	$	2,825

At June 30, 2013 and December 31, 2012, the total amount of inventories valued on a last in, first out (LIFO) basis was 36% and 35%, respectively. If valued on an average-cost basis, total inventories would have been $765 and $770 higher at June 30, 2013 and December 31, 2012, respectively.

- Definition

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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