Operating Segments (Schedule of Segment Reporting Information, by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Total revenue from external customers	$ 3,432		$ 3,332	[1]	$ 9,935		$ 9,734	[2]
Total operating revenue	3,432		3,332		9,935		9,734
Loss from discontinued operations	(23)		(52)	[1]	(92)		(94)	[2]
Net income attributable to Dominion	569		209	[1],[2]	1,266		961	[2]
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	829		836		2,508		2,573
Total operating revenue	837		842		2,564		2,654
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	124		119		398		428
DVP | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	8		6		56		81
Dominion Generation
Segment Reporting Information [Line Items]
Total revenue from external customers	1,882	[3]	1,824	[3]	5,034	[3]	4,960	[3]
Total operating revenue	1,992	[3]	1,934	[3]	5,271	[3]	5,235	[3]
Loss from discontinued operations	0	[3]	0	[3]	0	[3]	0	[3]
Net income attributable to Dominion	338	[3]	363	[3]	730	[3]	762	[3]
Dominion Generation | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	110	[3]	110	[3]	237	[3]	275	[3]
Dominion Energy
Segment Reporting Information [Line Items]
Total revenue from external customers	361		291		1,326		1,278
Total operating revenue	642		572		2,147		1,979
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	169		104		472		362
Dominion Energy | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	281		281		821		701
Corporate and Other
Segment Reporting Information [Line Items]
Total revenue from external customers	(10)	[3]	37	[3]	54	[3]	109	[3]
Total operating revenue	148	[3]	201	[3]	518	[3]	568	[3]
Loss from discontinued operations	(23)	[3]	(52)	[3]	(92)	[3]	(94)	[3]
Net income attributable to Dominion	(62)	[3]	(377)	[3]	(334)	[3]	(591)	[3]
Corporate and Other | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	158	[3]	164	[3]	464	[3]	459	[3]
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Total revenue from external customers	370		344		1,013		814
Total operating revenue	(187)		(217)		(565)		(702)
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	0		0		0		0
Adjustments/Eliminations | Intersegment Revenue
Segment Reporting Information [Line Items]
Total revenue from external customers	(557)		(561)		(1,578)		(1,516)
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Total revenue from external customers	2,059		2,086		5,550		5,596
Total operating revenue	2,059		2,086		5,550		5,596
Net income attributable to Dominion	387		415		939		830
Virginia Electric and Power Company | DVP
Segment Reporting Information [Line Items]
Total operating revenue	470		505		1,366		1,413
Net income attributable to Dominion	123		128		355		335
Virginia Electric and Power Company | Dominion Generation
Segment Reporting Information [Line Items]
Total operating revenue	1,589		1,581		4,184		4,183
Net income attributable to Dominion	262		283		587		534
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	$ 2		$ 4		$ (3)		$ (39)

[1] Recast to reflect Brayton Point and Kincaid as discontinued operations, as discussed in Note 3.

[2] Net of $43 million and $57 million tax for the three months ended September 30, 2013 and 2012, respectively, and net of $21 million and $(28) million tax for the nine months ended September 30, 2013 and 2012, respectively.

[3] 2012 amounts have been recast to reflect Brayton Point and Kincaid as discontinued operations, as discussed in Note 3.