Operating Segments (Schedule of Segment Reporting Information, by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Segment Reporting Information [Line Items]
Total revenue from external customers	$ 2,980		$ 3,005	[1]	$ 6,503		$ 6,402
Intersegment revenue	0		0		0		0
Total operating revenue	2,980		3,005		6,503		6,402
Loss from discontinued operations	(70)		(32)	[1]	(69)		(42)
Net income attributable to Dominion	202		258	[1]	697		752
DVP
Segment Reporting Information [Line Items]
Total revenue from external customers	772		806		1,679		1,737
Intersegment revenue	6		13		48		75
Total operating revenue	778		819		1,727		1,812
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	132		143		274		309
Dominion Generation
Segment Reporting Information [Line Items]
Total revenue from external customers	1,501	[2]	1,556	[2]	3,152	[2]	3,136	[2]
Intersegment revenue	91	[2]	89	[2]	127	[2]	165	[2]
Total operating revenue	1,592	[2]	1,645	[2]	3,279	[2]	3,301	[2]
Loss from discontinued operations	0	[2]	0	[2]	0	[2]	0	[2]
Net income attributable to Dominion	165	[2]	166	[2]	392	[2]	399	[2]
Dominion Energy
Segment Reporting Information [Line Items]
Total revenue from external customers	354		371		966		987
Intersegment revenue	275		220		539		420
Total operating revenue	629		591		1,505		1,407
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	124		109		303		258
Corporate and Other
Segment Reporting Information [Line Items]
Total revenue from external customers	17	[2]	33	[2]	63	[2]	72	[2]
Intersegment revenue	164	[2]	146	[2]	307	[2]	295	[2]
Total operating revenue	181	[2]	179	[2]	370	[2]	367	[2]
Loss from discontinued operations	(70)	[2]	(32)	[2]	(69)	[2]	(42)	[2]
Net income attributable to Dominion	(219)	[2]	(160)	[2]	(272)	[2]	(214)	[2]
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Total revenue from external customers	336		239		643		470
Intersegment revenue	(536)		(468)		(1,021)		(955)
Total operating revenue	(200)		(229)		(378)		(485)
Loss from discontinued operations	0		0		0		0
Net income attributable to Dominion	0		0		0		0
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Total revenue from external customers	1,710		1,756		3,491		3,510
Total operating revenue	1,710		1,756		3,491		3,510
Net income attributable to Dominion	265		172		552		415
Virginia Electric and Power Company | DVP
Segment Reporting Information [Line Items]
Total operating revenue	431		449		896		908
Net income attributable to Dominion	114		100		232		207
Virginia Electric and Power Company | Dominion Generation
Segment Reporting Information [Line Items]
Total operating revenue	1,279		1,307		2,595		2,602
Net income attributable to Dominion	157		118		325		251
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	$ (6)		$ (46)		$ (5)		$ (43)

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

[2] 2012 amounts have been recast to reflect Brayton Point and Kincaid as discontinued operations, as discussed in Note 3.