Operating Segments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
After-tax net benefit	$ 2,436		$ 2,555	[1]	$ 4,985	[1]	$ 5,545	[1]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(32)		(8)		(30)		(39)
Loss from discontinued operations	(18)		(5)	[1]	(17)	[1]	(30)	[1]
Operating Loss	(617)		(733)	[1]	(1,530)	[1]	(1,726)	[1]
Corporate and Other
After-tax net benefit					71		44
After Tax Net Benefits Expenses Attributable To Operating Segments							36
Loss from discontinued operations	(18)	[2]	(5)	[2]	(17)	[2]	(30)	[2]
Dominion Virginia Power
Restoration costs					74
Restoration costs, net of tax					45
Loss from discontinued operations	0		0		0		0
Dominion Generation
Loss from discontinued operations	0	[2]	0	[2]	0	[2]	0	[2]
Operating Loss					23		37
Operating Loss After Tax					16		20
Virginia Electric and Power Company
After-tax net benefit	1,395		1,286		2,681		2,532
Restoration costs					74
Restoration costs, net of tax					45
Operating Loss	(361)		(471)		(829)		(982)
Virginia Electric and Power Company | Corporate and Other
After-tax net benefit					44		5
State Line and Salem Harbor | Dominion Generation
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax					30		39
Loss from discontinued operations					$ 17		$ 30

[1] Consolidated Statements of Income for the six months ended June 30, 2012 and the three and six months ended June 30, 2011 have been recast to reflect Salem Harbor and State Line as discontinued operations, as discussed in Note 3.

[2] Dominion's segment information for the six months ended June 30, 2012 and the three and six months ended June 30, 2011 has been recast to reflect Salem Harbor and State Line as discontinued operations, as discussed in Note 3.