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Inventory

12 Months Ended

Dec. 31, 2014

Inventory is valued primarily using the average-cost method. The following table summarizes the Company’s inventory balances as of the dates indicated:



	December 31,
	2014		2013
	(in millions)
Fuel and other raw materials	$	357	$	334
Spare parts and supplies	345		350
Total	$	702	$	684

- 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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