Segment Information (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Financial Information

Segment Financial Information

For the Three Months Ended	Regulated Distribution		Regulated Transmission		Competitive Energy Services			Corporate/ Other			Reconciling Adjustments			Consolidated
	(In millions)
September 30, 2016
External revenues	$	2,702	$	285	$	998		$	—		$	(68	)	$	3,917
Internal revenues	—		—		117			—			(117		)	—
Total revenues	2,702		285		1,115			—			(185		)	3,917
Depreciation	171		45		79			16			—			311
Amortization of regulatory assets, net	98		—		—			—			—			98
Investment income	13		—		23			2			(10		)	28
Interest expense	139		43		48			56			—			286
Income taxes (benefits)	167		45		49			(11		)	1			251
Net income (loss)	283		78		86			(67		)	—			380
Total assets	28,276		8,034		15,165			486			—			51,961
Total goodwill	5,092		526		—			—			—			5,618
Property additions	303		246		110			5			—			664
September 30, 2015
External revenues	$	2,624	$	248	$	1,327		$	—		$	(76	)	$	4,123
Internal revenues	—		—		141			—			(141		)	—
Total revenues	2,624		248		1,468			—			(217		)	4,123
Depreciation	174		41		98			15			—			328
Amortization of regulatory assets, net	110		—		—			—			—			110
Impairment of assets	8		—		—			—			—			8
Investment income (loss)	8		—		(19		)	(6		)	(11		)	(28		)
Interest expense	149		40		48			48			—			285
Income taxes (benefits)	137		41		84			(39		)	3			226
Net income (loss)	234		70		145			(54		)	—			395
Total assets	27,883		6,988		16,229			830			—			51,930
Total goodwill	5,092		526		800			—			—			6,418
Property additions	292		149		83			15			—			539
For the Nine Months Ended
September 30, 2016
External revenues	$	7,423	$	824	$	3,158		$	—		$	(218	)	$	11,187
Internal revenues	—		—		377			—			(377		)	—
Total revenues	7,423		824		3,535			—			(595		)	11,187
Depreciation	510		132		284			48			—			974
Amortization of regulatory assets, net	218		4		—			—			—			222
Impairment of assets (Note 2)	—		—		1,447			—			—			1,447
Investment income	37		—		56			13			(31		)	75
Interest expense	431		128		143			161			—			863
Income taxes (benefits)	349		130		(96		)	(51		)	2			334
Net income (loss)	594		223		(1,029		)	(169		)	—			(381		)
Property additions	878		755		492			31			—			2,156
September 30, 2015
External revenues	$	7,425	$	755	$	3,536		$	—		$	(231	)	$	11,485
Internal revenues	—		—		563			—			(563		)	—
Total revenues	7,425		755		4,099			—			(794		)	11,485
Depreciation	516		116		293			44			—			969
Amortization of regulatory assets, net	196		5		—			—			—			201
Impairment of assets	8		—		16			—			—			24
Investment income (loss)	33		—		(7		)	(9		)	(31		)	(14		)
Interest expense	439		119		144			144			—			846
Income taxes (benefits)	350		135		76			(84		)	8			485
Net income (loss)	598		231		129			(154		)	—			804
Property additions	884		700		400			41			—			2,025