Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Inventory consisted of the following:



(in millions)	March 31, 2012		December 31, 2011
Coal, gas, fuel oil and other raw materials	$	170	$	211
Spare parts, materials and supplies	409		413
Total inventory	$	579	$	624

EPS Computation

EPS attributable to Edison International common shareholders was computed as follows:



	Three months ended March 31,
(in millions)	2012		2011
Basic earnings per share – continuing operations:
Income from continuing operations attributable to common shareholders, net of tax	$	94	$	202
Participating securities dividends	—		—
Income from continuing operations available to common shareholders	$	94	$	202
Weighted average common shares outstanding	326		326
Basic earnings per share – continuing operations	$	0.28	$	0.62
Diluted earnings per share – continuing operations:
Income from continuing operations available to common shareholders	$	94	$	202
Income impact of assumed conversions	—		1
Income from continuing operations available to common shareholders and assumed conversions	$	94	$	203
Weighted average common shares outstanding	326		326
Incremental shares from assumed conversions	3		2
Adjusted weighted average shares – diluted	329		328
Diluted earnings per share – continuing operations	$	0.28	$	0.62

- Definition

The entire disclosure for earnings per share.

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- 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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