Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Financial Information

Segment Financial Information

For the Years Ended December 31	Regulated Distribution		Regulated Transmission		Competitive Energy Services			Corporate/ Other			Reconciling Adjustments			Consolidated
	(In millions)
2016
External revenues	$	9,629	$	1,151	$	4,070		$	—		$	(288	)	$	14,562
Internal revenues	—		—		479			—			(479		)	—
Total revenues	9,629		1,151		4,549			—			(767		)	14,562
Depreciation	676		187		387			63			—			1,313
Amortization of regulatory assets, net	313		7		—			—			—			320
Impairment of assets	—		—		10,665			—			—			10,665
Investment income	49		—		66			10			(41		)	84
Interest expense	586		158		194			219			—			1,157
Income taxes (benefits)	375		187		(3,498		)	(121		)	2			(3,055		)
Net income (loss)	651		331		(6,919		)	(240		)	—			(6,177		)
Total assets	27,702		8,755		5,952			739			—			43,148
Total goodwill	5,004		614		—			—			—			5,618
Property additions	1,063		1,101		619			52			—			2,835
2015
External revenues	$	9,582	$	1,054	$	4,698		$	—		$	(308	)	$	15,026
Internal revenues	—		—		686			—			(686		)	—
Total revenues	9,582		1,054		5,384			—			(994		)	15,026
Depreciation	664		164		394			60			—			1,282
Amortization of regulatory assets, net	261		7		—			—			—			268
Impairment of assets	8		—		34			—			—			42
Investment income (loss)	42		—		(16		)	(9		)	(39		)	(22		)
Impairment of equity method investment	—		—		—			362			—			362
Interest expense	600		147		192			193			—			1,132
Income taxes (benefits)	325		191		50			(262		)	11			315
Net income (loss)	588		328		89			(427		)	—			578
Total assets	27,390		7,800		16,027			877			—			52,094
Total goodwill	5,092		526		800			—			—			6,418
Property additions	1,040		1,020		588			56			—			2,704
2014
External revenues	$	9,054	$	817	$	5,470		$	—		$	(292	)	$	15,049
Internal revenues	—		—		819			—			(819		)	—
Total revenues	9,054		817		6,289			—			(1,111		)	15,049
Depreciation	651		134		387			48			—			1,220
Amortization of regulatory assets, net	1		11		—			—			—			12
Investment income	56		—		54			2			(40		)	72
Interest expense	603		117		197			168			(4		)	1,081
Income taxes (benefits)	209		139		(223		)	(178		)	11			(42		)
Income (loss) from continuing operations	433		255		(417		)	(58		)	—			213
Discontinued operations, net of tax	—		—		86			—			—			86
Net income (loss)	433		255		(331		)	(58		)	—			299
Total assets	27,332		6,864		16,180			1,176			—			51,552
Total goodwill	5,092		526		800			—			—			6,418
Property additions	855		1,446		939			72			—			3,312