Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

The tables below show our financial data for our segments for the periods indicated (in millions).



	Three Months Ended March 31, 2015
	West		Texas		East			Consolidation and Elimination			Total
Revenues from external customers	$	515	$	581	$	550		$	—		$	1,646
Intersegment revenues	2		3		2			(7		)	—
Total operating revenues	$	517	$	584	$	552		$	(7	)	$	1,646
Commodity Margin	$	218	$	149	$	168		$	—		$	535
Add: Mark-to-market commodity activity, net and other⁽¹⁾	119		41		(52		)	(7		)	101
Less:
Plant operating expense	106		89		72			(7		)	260
Depreciation and amortization expense	67		49		42			—			158
Sales, general and other administrative expense	10		17		10			—			37
Other operating expenses	10		2		8			—			20
(Income) from unconsolidated investments in power plants	—		—		(5		)	—			(5		)
Income (loss) from operations	144		33		(11		)	—			166
Interest expense, net of interest income											153
Debt extinguishment costs and other (income) expense, net											21
Loss before income taxes											$	(8	)



	Three Months Ended March 31, 2014
	West		Texas			East			Consolidation and Elimination			Total
Revenues from external customers	$	491	$	647		$	827		$	—		$	1,965
Intersegment revenues	2		12			17			(31		)	—
Total operating revenues	$	493	$	659		$	844		$	(31	)	$	1,965
Commodity Margin⁽²⁾	$	202	$	121		$	322		$	—		$	645
Add: Mark-to-market commodity activity, net and other⁽¹⁾	29		(46		)	(11		)	(9		)	(37		)
Less:
Plant operating expense	105		90			79			(9		)	265
Depreciation and amortization expense	60		42			51			—			153
Sales, general and other administrative expense	10		12			12			(1		)	33
Other operating expenses	12		2			7			1			22
(Income) from unconsolidated investments in power plants	—		—			(9		)	—			(9		)
Income (loss) from operations	44		(71		)	171			—			144
Interest expense, net of interest income												165
Debt extinguishment costs and other (income) expense, net												11
Loss before income taxes												$	(32	)

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(1)	Includes $(24) million and $(29) million of lease levelization and $4 million and $4 million of amortization expense for the three months ended March 31, 2015 and 2014, respectively.


(2)	Commodity Margin related to the six power plants sold in our East segment on July 3, 2014, was $39 million for the three months ended March 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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