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Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

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)
2017
External revenues		$	9,734			$	1,325			$	3,143			$	—			$	(185	)		$	14,017
Internal revenues		—				—				386				—				(386		)		—
Total revenues		9,734				1,325				3,529				—				(571		)		14,017
Depreciation		724				224				118				72				—				1,138
Amortization of regulatory assets, net		292				16				—				—				—				308
Impairment of assets and related charges		—				41				2,365				—				—				2,406
Investment income		54				—				81				11				(48		)		98
Interest expense		535				156				179				308				—				1,178
Income taxes (benefits)		580				205				155				(45		)		—				895
Net income (loss)		916				336				(2,641		)		(335		)		—				(1,724		)
Total assets		27,730				9,525				4,339				663				—				42,257
Total goodwill		5,004				614				—				—				—				5,618
Property additions		1,191				1,030				317				49				—				2,587
2016
External revenues		$	9,629			$	1,144			$	4,070			$	—			$	(281	)		$	14,562
Internal revenues		—				—				479				—				(479		)		—
Total revenues		9,629				1,144				4,549				—				(760		)		14,562
Depreciation		676				187				387				63				—				1,313
Amortization of regulatory assets, net		290				7				—				—				—				297
Impairment of assets and related charges		—				—				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		)		(119		)		—				(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			$	1,046			$	4,698			$	—			$	(300	)		$	15,026
Internal revenues		—				—				686				—				(686		)		—
Total revenues		9,582				1,046				5,384				—				(986		)		15,026
Depreciation		664				164				394				60				—				1,282
Amortization of regulatory assets, net		165				7				—				—				—				172
Impairment of assets and related charges		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				(251		)		—				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

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599

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- References

No definition available.

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