Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Schedule Of Segment Reporting Information By Segment

The following table presents information about the reported revenues and specified items reflected in Ameren’s net income attributable to Ameren Corporation from continuing operations for the three months ended March 31, 2014, and 2013, and total assets in continuing operations as of March 31, 2014, and December 31, 2013.



Three Months	Ameren Missouri		Ameren Illinois		Other			Intersegment Eliminations			Ameren
2014
External revenues	$	811	$	774	$	9		$	—		$	1,594
Intersegment revenues	6		—		1			(7		)	—
Net income (loss) attributable to Ameren Corporation from continuing operations	47		53		(3		)	—			97
2013
External revenues	$	789	$	684	$	2		$	—		$	1,475
Intersegment revenues	7		—		2			(9		)	—
Net income (loss) attributable to Ameren Corporation from continuing operations	40		31		(17		)	—			54
As of March 31, 2014:
Total assets	$	12,948	$	7,640	$	898		$	(335	)	$	21,151	^(a)
As of December 31, 2013:
Total assets	$	12,904	$	7,454	$	752		$	(233	)	$	20,877	^(a)

(a) Excludes total assets from discontinued operations of $15 million and $165 million as of March 31, 2014, and December 31, 2013, respectively.

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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