Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Segment Information [Abstract]

Segment Financial Information

			Competitive		Regulated
	Regulated		Energy		Independent		Other/			Reconciling
Three Months Ended	Distribution		Services		Transmission		Corporate			Adjustments			Consolidated
	(In millions)
June 30, 2011
External revenues	$	2,485	$	1,495	$	105	$	(30	)	$	(7	)	$	4,048
Internal revenues		—		318		—		—			(306	)		12
Total revenues		2,485		1,813		105		(30	)		(313	)		4,060
Depreciation and amortization		240		107		18		7			—			372
Investment income (loss), net		27		15		—		1			(12	)		31
Net interest charges		145		67		11		21			1			245
Income taxes		108		7		18		(30	)		(2	)		101
Net income (loss)		184		12		31		(51	)		(5	)		171
Total assets		26,932		17,146		2,339		1,179			—			47,596
Total goodwill		5,551		905		—		—			—			6,456
Property additions		302		197		45		25			—			569
June 30, 2010
External revenues	$	2,314	$	795	$	59	$	(21	)	$	(8	)	$	3,139
Internal revenues		19		539		—		—			(558	)		—
Total revenues		2,333		1,334		59		(21	)		(566	)		3,139
Depreciation and amortization		264		71		13		3			—			351
Investment income (loss), net		28		13		—		—			(10	)		31
Net interest charges		124		33		5		9			(4	)		167
Income taxes		81		75		7		(12	)		(17	)		134
Net income (loss)		132		121		11		(20	)		12			256
Total assets		21,457		11,102		993		914			—			34,466
Total goodwill		5,551		24		—		—			—			5,575
Property additions		157		290		15		27			—			489
Six Months Ended
June 30, 2011
External revenues	$	4,753	$	2,736	$	172	$	(53	)	$	(16	)	$	7,592
Internal revenues		—		661		—		—			(617	)		44
Total revenues		4,753		3,397		172		(53	)		(633	)		7,636
Depreciation and amortization		485		195		31		13			—			724
Investment income (loss), net		52		21		—		1			(22	)		52
Net interest charges		276		122		20		40			—			458
Income taxes		164		10		25		(50	)		30			179
Net income (loss)		280		17		44		(86	)		(39	)		216
Total assets		26,932		17,146		2,339		1,179			—			47,596
Total goodwill		5,551		905		—		—			—			6,456
Property additions		479		411		72		56			—			1,018
June 30, 2010
External revenues	$	4,798	$	1,514	$	116	$	(43	)	$	(14	)	$	6,371
Internal revenues		19		1,213		—		—			(1,165	)		67
Total revenues		4,817		2,727		116		(43	)		(1,179	)		6,438
Depreciation and amortization		577		148		25		6			—			756
Investment income (loss), net		54		14		—		1			(22	)		47
Net interest charges		248		66		10		22			(7	)		339
Income taxes		143		117		14		(24	)		(5	)		245
Net income (loss)		235		190		23		(39	)		(4	)		405
Total assets		21,457		11,102		993		914			—			34,466
Total goodwill		5,551		24		—		—			—			5,575
Property additions		309		619		29		40			—			997