Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015 and 2014, and total assets of continuing operations as of March 31, 2015, and December 31, 2014.



Three Months	Ameren Missouri		Ameren Illinois		Other			Intersegment Eliminations			Ameren
2015
External revenues	$	793	$	744	$	19		$	—		$	1,556
Intersegment revenues	7		1		1			(9		)	—
Net income attributable to Ameren Corporation from continuing operations	41		53		14			—			108
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
As of March 31, 2015:
Total assets	$	13,555	$	8,456	$	1,082		$	(224	)	$	22,869	^(a)
As of December 31, 2014:
Total assets	$	13,541	$	8,381	$	942		$	(203	)	$	22,661	^(a)

(a) Excludes total assets from discontinued operations of $15 million as of March 31, 2015, and December 31, 2014.

- 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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