Segment Information (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Segment Financial Information

Segment Financial Information

Three Months Ended	Regulated Distribution		Regulated Transmission		Competitive Energy Services			Corporate/ Other			Reconciling Adjustments			Consolidated
	(In millions)
March 31, 2016
External revenues	$	2,521	$	275	$	1,152		$	(42	)	$	(37	)	$	3,869
Internal revenues	—		—		152			—			(152		)	—
Total revenues	2,521		275		1,304			(42		)	(189		)	3,869
Depreciation	169		43		102			15			—			329
Amortization of regulatory assets, net	59		2		—			—			—			61
Investment income	11		—		15			11			(9		)	28
Interest expense	147		43		47			51			—			288
Income taxes (benefits)	98		43		85			(13		)	—			213
Net income (loss)	165		74		144			(55		)	—			328
Total assets	27,907		7,679		16,578			531			—			52,695
Total goodwill	5,092		526		800			—			—			6,418
Property additions	262		258		169			9			—			698
March 31, 2015
External revenues	$	2,562	$	238	$	1,175		$	(42	)	$	(36	)	$	3,897
Internal revenues	—		—		260			—			(260		)	—
Total revenues	2,562		238		1,435			(42		)	(296		)	3,897
Depreciation	172		37		96			14			—			319
Amortization of regulatory assets, net	29		3		—			—			—			32
Investment income	13		—		12			2			(10		)	17
Interest expense	144		39		48			47			1			279
Income taxes (benefits)	122		42		(4		)	(18		)	2			144
Net income (loss)	208		72		(8		)	(50		)	—			222
Total assets	27,974		6,601		16,497			807			—			51,879
Total goodwill	5,092		526		800			—			—			6,418
Property additions	280		254		126			8			—			668