Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Schedule of Financial Data for Segments

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



	Three Months Ended June 30, 2014
	West				Texas				North				Southeast				Consolidation and Elimination				Total
Revenues from external customers	$	487			$	960			$	332			$	160			$	—			$	1,939
Intersegment revenues	1				3				12				57				(73		)		—
Total operating revenues	$	488			$	963			$	344			$	217			$	(73	)		$	1,939
Commodity Margin⁽¹⁾	$	228			$	177			$	175			$	52			$	—			$	632
Add: Mark-to-market commodity activity, net and other⁽²⁾	21				184				(23		)		(1		)		(8		)		173
Less:
Plant operating expense	95				83				65				38				(7		)		274
Depreciation and amortization expense	58				48				32				8				1				147
Sales, general and other administrative expense	7				18				6				6				1				38
Other operating expenses	15				1				8				1				(4		)		21
(Income) from unconsolidated investments in power plants	—				—				(4		)		—				—				(4		)
Income (loss) from operations	74				211				45				(2		)		1				329
Interest expense, net of interest income																					167
Other (income) expense, net																					6
Income before income taxes																					$	156



	Three Months Ended June 30, 2013
	West				Texas				North				Southeast				Consolidation and Elimination				Total
Revenues from external customers	$	479			$	571			$	348			$	174			$	—			$	1,572
Intersegment revenues	—				(25		)		8				71				(54		)		—
Total operating revenues	$	479			$	546			$	356			$	245			$	(54	)		$	1,572
Commodity Margin⁽¹⁾	$	198			$	133			$	159			$	43			$	—			$	533
Add: Mark-to-market commodity activity, net and other⁽²⁾	19				34				(12		)		7				(9		)		39
Less:
Plant operating expense	92				93				46				34				(8		)		257
Depreciation and amortization expense	53				42				32				18				—				145
Sales, general and other administrative expense	8				16				6				6				—				36
Other operating expenses	12				1				7				1				(1		)		20
(Income) from unconsolidated investments in power plants	—				—				(8		)		—				—				(8		)
Income (loss) from operations	52				15				64				(9		)		—				122
Interest expense, net of interest income																					169
Debt extinguishment costs and other (income) expense, net																					71
Loss before income taxes																					$	(118	)



	Six Months Ended June 30, 2014
	West				Texas				North				Southeast				Consolidation and Elimination				Total
Revenues from external customers	$	978			$	1,607			$	971			$	348			$	—			$	3,904
Intersegment revenues	3				15				27				138				(183		)		—
Total operating revenues	$	981			$	1,622			$	998			$	486			$	(183	)		$	3,904
Commodity Margin⁽³⁾	$	430			$	298			$	442			$	107			$	—			$	1,277
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	50				138				(40		)		5				(17		)		136
Less:
Plant operating expense	200				173				117				65				(16		)		539
Depreciation and amortization expense	118				90				65				26				1				300
Sales, general and other administrative expense	17				30				12				12				—				71
Other operating expenses	27				3				14				2				(3		)		43
(Income) from unconsolidated investments in power plants	—				—				(13		)		—				—				(13		)
Income from operations	118				140				207				7				1				473
Interest expense, net of interest income																					332
Debt extinguishment costs and other (income) expense, net																					17
Income before income taxes																					$	124



	Six Months Ended June 30, 2013
	West				Texas				North				Southeast				Consolidation and Elimination				Total
Revenues from external customers	$	862			$	978			$	654			$	319			$	—			$	2,813
Intersegment revenues	1				(18		)		15				104				(102		)		—
Total operating revenues	$	863			$	960			$	669			$	423			$	(102	)		$	2,813
Commodity Margin⁽³⁾	$	400			$	209			$	301			$	84			$	—			$	994
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	(18		)		23				(5		)		14				(16		)		(2		)
Less:
Plant operating expense	187				158				89				65				(15		)		484
Depreciation and amortization expense	106				84				65				37				(1		)		291
Sales, general and other administrative expense	15				30				12				12				—				69
Other operating expenses	21				2				14				2				(1		)		38
(Income) from unconsolidated investments in power plants	—				—				(16		)		—				—				(16		)
Income (loss) from operations	53				(42		)		132				(18		)		1				126
Interest expense, net of interest income																					343
Debt extinguishment costs and other (income) expense, net																					76
Loss before income taxes																					$	(293	)

_________


(1)	Our Southeast segment includes Commodity Margin of $42 million and $32 million for the three months ended June 30, 2014 and 2013, respectively, related to the six power plants in our Southeast segment that were sold in July 2014.


(2)	Includes $(27) million and $(11) million of lease levelization and $3 million and $3 million of amortization expense for the three months ended June 30, 2014 and 2013, respectively.


(3)	Our Southeast segment includes Commodity Margin of $81 million and $57 million for the six months ended June 30, 2014 and 2013, respectively, related to the six power plants in our Southeast segment that were sold in July 2014.


(4)	Includes $(56) million and $(27) million of lease levelization and $7 million and $7 million of amortization expense for the six months ended June 30, 2014 and 2013, respectively.

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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