Segment and Geographical Information (Tables)

12 Months Ended

Dec. 31, 2012

Segments Tables [Abstract]

Revenue By Segment Table

	Total Revenue						Intersegment						External Revenue
	2012		2011		2010		2012		2011		2010		2012		2011		2010
	(in millions)
Revenue
US - Generation	$	861	$	784	$	806	$	-	$	(2)	$	-	$	861	$	782	$	806
US - Utilities		2,898		1,326		1,145		-		-		-		2,898		1,326		1,145
Andes - Generation		3,020		2,989		2,519		(33)		(36)		-		2,987		2,953		2,519
Brazil - Generation		1,087		1,128		1,031		(1,019)		(1,109)		(1,015)		68		19		16
Brazil - Utilities		5,720		6,621		6,340		-		-		-		5,720		6,621		6,340
MCAC - Generation		1,723		1,575		1,400		(2)		(5)		(3)		1,721		1,570		1,397
EMEA - Generation		1,376		1,501		1,208		(33)		(34)		(31)		1,343		1,467		1,177
Asia - Generation		738		626		618		-		-		-		738		626		618
Corporate and Other		1,809		1,565		1,435		(4)		(6)		(10)		1,805		1,559		1,425
Total Revenue	$	19,232	$	18,115	$	16,502	$	(1,091)	$	(1,192)	$	(1,059)	$	18,141	$	16,923	$	15,443

Adjusted Gross Margin by Segment Table

	Total Adjusted Pre-Tax Contribution						Intersegment						External Adjusted Pre-Tax Contribution
	2012		2011		2010		2012		2011		2010		2012		2011		2010
	(in millions)
Adjusted Pre-Tax Contribution (1)
US - Generation	$	171	$	101	$	75	$	38	$	51	$	6	$	209	$	152	$	81
US - Utilities		239		80		130		2		1		2		241		81		132
Andes - Generation		369		508		322		(16)		(32)		6		353		476		328
Brazil - Generation		169		189		177		(244)		(267)		(251)		(75)		(78)		(74)
Brazil - Utilities		152		226		214		165		179		192		317		405		406
MCAC - Generation		363		290		238		8		1		(23)		371		291		215
EMEA - Generation		381		273		201		(18)		(4)		4		363		269		205
Asia - Generation		201		99		145		2		2		2		203		101		147
Corporate and Other		(668)		(688)		(547)		63		69		62		(605)		(619)		(485)
Total Adjusted Pre-Tax Contribution		1,377		1,078		955		-		-		-		1,377		1,078		955
Reconciliation to Income from Continuing Operations before Taxes and Equity Earnings of Affiliates:
Non-GAAP Adjustments:
Unrealized derivatives gains (losses)														(118)		(11)		2
Unrealized foreign currency gains (losses)														18		(38)		38
Disposition/acquisition gains														206		-		-
Impairment losses														(1,936)		(271)		(322)
Debt retirement losses														(16)		(46)		(29)
Pre-tax contribution														(469)		712		644
Add: Income from continuing operations before taxes, attributable to noncontrolling interests														817		1,497		1,430
Less: Net equity in earnings of affiliates														34		(2)		184
Income from continuing operations before taxes and equity earnings of affiliates													$	314	$	2,211	$	1,890

Assets By Segment Table

	Total Assets						Depreciation and Amortization						Capital Expenditures
	2012		2011		2010		2012		2011		2010		2012		2011		2010
	(in millions)
US - Generation	$	3,259	$	3,461	$	3,550	$	129	$	131	$	148	$	75	$	174	$	290
US - Utilities		7,534		9,397		3,138		396		178		161		324		232		177
Andes - Generation		6,619		6,482		6,164		174		151		123		389		385		463
Brazil - Generation		1,590		1,777		2,035		53		59		40		65		105		58
Brazil - Utilities		8,120		8,825		8,967		228		273		211		652		633		559
MCAC - Generation		4,293		4,246		4,009		112		94		94		160		183		136
EMEA - Generation		4,578		4,491		4,302		150		165		136		229		329		343
Asia - Generation		2,625		1,830		1,861		32		33		33		229		177		24
Discontinued businesses		25		1,625		2,791		3		68		122		9		92		107
Corp and Other & eliminations		3,187		3,212		3,694		117		110		110		138		151		176
Total	$	41,830	$	45,346	$	40,511	$	1,394	$	1,262	$	1,178	$	2,270	$	2,461	$	2,333