Goodwill and Intangible Assets (Goodwill) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 3,141	[1]	$ 3,141	[1]
Impairments/adjustments			0
Asset disposition adjustment	(11)
Goodwill, Ending Balance	3,130	[1]	3,141	[1]
Dominion Generation
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,338	[1]	1,338	[1]
Impairments/adjustments			0
Asset disposition adjustment	0
Goodwill, Ending Balance	1,338	[1]	1,338	[1]
Dominion Energy
Goodwill [Roll Forward]
Goodwill, Beginning Balance	712	[1]	712	[1]
Impairments/adjustments			0
Asset disposition adjustment	(11)
Goodwill, Ending Balance	701	[1]	712	[1]
DVP
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,091	[1]	1,091	[1]
Impairments/adjustments			0
Asset disposition adjustment	0
Goodwill, Ending Balance	1,091	[1]	1,091	[1]
Corporate and Other
Goodwill [Roll Forward]
Goodwill, Beginning Balance	0	[1]	0	[1]
Impairments/adjustments			0
Asset disposition adjustment	0
Goodwill, Ending Balance	$ 0	[1]	$ 0	[1]

[1] Goodwill amounts do not contain any accumulated impairment losses.