Operating Segments (Schedule of Segment Reporting Information, by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Total revenue from external customers	$ 2,813		$ 2,980		$ 6,443		$ 6,503
Total operating revenue	2,813		2,980		6,443		6,503
Loss from discontinued operations	0		(70)		0		(69)
Net income attributable to Dominion	159		202		538		697	[1]
Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	0		0		0		0
DVP
Segment Reporting Information [Line Items]
Total revenue from external customers	445	[2]	432	[2]	945	[2]	896	[2]
Total operating revenue	450	[2]	435	[2]	954	[2]	901	[2]
Loss from discontinued operations			0	[2]			0	[2]
Net income attributable to Dominion	116	[2]	112	[2]	247	[2]	228	[2]
DVP | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	5	[2]	3	[2]	9	[2]	5	[2]
Dominion Generation
Segment Reporting Information [Line Items]
Total revenue from external customers	1,694	[2]	1,898	[2]	3,951	[2]	4,028	[2]
Total operating revenue	1,704	[2]	1,901	[2]	3,988	[2]	4,072	[2]
Loss from discontinued operations			0	[2]			0	[2]
Net income attributable to Dominion	159	[2]	185	[2]	468	[2]	439	[2]
Dominion Generation | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	10	[2]	3	[2]	37	[2]	44	[2]
Dominion Energy
Segment Reporting Information [Line Items]
Total revenue from external customers	429		354		791		966
Total operating revenue	681		629		1,532		1,505
Loss from discontinued operations			0				0
Net income attributable to Dominion	130		124		338		303
Dominion Energy | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	252		275		741		539
Corporate and Other
Segment Reporting Information [Line Items]
Total revenue from external customers	4		17		7		63
Total operating revenue	143		181		288		370
Loss from discontinued operations			(70)				(69)
Net income attributable to Dominion	(246)		(219)		(515)		(273)
Corporate and Other | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	139		164		281		307
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Total revenue from external customers	241	[2]	279	[2]	749	[2]	550	[2]
Total operating revenue	(165)	[2]	(166)	[2]	(319)	[2]	(345)	[2]
Loss from discontinued operations			0	[2]			0	[2]
Net income attributable to Dominion	0	[2]	0	[2]	0	[2]	0	[2]
Adjustments/Eliminations | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	(406)	[2]	(445)	[2]	(1,068)	[2]	(895)	[2]
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Total revenue from external customers	1,729	[3]	1,710	[3]	3,712	[3]	3,491	[3]
Total operating revenue	1,729		1,710		3,712		3,491
Net income attributable to Dominion	69		265		393		552
Virginia Electric and Power Company | DVP
Segment Reporting Information [Line Items]
Total operating revenue	448		431		950		896
Net income attributable to Dominion	117		114		251		232
Virginia Electric and Power Company | Dominion Generation
Segment Reporting Information [Line Items]
Total operating revenue	1,281		1,279		2,762		2,595
Net income attributable to Dominion	133		157		322		325
Virginia Electric and Power Company | Corporate and Other
Segment Reporting Information [Line Items]
Total operating revenue	0		0		0		0
Net income attributable to Dominion	(181)		(6)		(180)		(5)
Dominion Gas Holdings, LLC
Segment Reporting Information [Line Items]
Total revenue from external customers	428	[4]	430	[4]	997	[4]	1,016	[4]
Total operating revenue	428		430		997		1,016
Net income attributable to Dominion	93		53		257		191
Dominion Gas Holdings, LLC | Dominion Energy
Segment Reporting Information [Line Items]
Total operating revenue	428		430		997		1,016
Net income attributable to Dominion	96		97		262		237
Dominion Gas Holdings, LLC | Corporate and Other
Segment Reporting Information [Line Items]
Total operating revenue	0		0		0		0
Net income attributable to Dominion	$ (3)		$ (44)		$ (5)		$ (46)

[1] Net of $47 million and $(76) million tax for the three months ended June 30, 2014 and 2013, respectively, and net of $126 million and $(22) million for the six months ended June 30, 2014 and 2013, respectively.

[2] 2013 amounts have been recast to reflect nonregulated retail energy marketing operations in the Dominion Generation segment.

[3] See Note 17 for amounts attributable to affiliates.

[4] See Note 17 for amounts attributable to related parties.