Property, Plant and Equipment (Share of Jointly-Owned Power Stations) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Millstone Unit 3
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	93.50%	[1]
Plant in service	$ 1,007	[1]
Accumulated depreciation	(262)	[1]
Nuclear fuel	388	[1]
Accumulated amortization of nuclear fuel	(283)	[1]
Plant under construction	69	[1]
Virginia Electric and Power Company | Bath County Pumped Storage Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	60.00%	[2]
Plant in service	1,038	[2]
Accumulated depreciation	(536)	[2]
Nuclear fuel	0	[2]
Accumulated amortization of nuclear fuel	0	[2]
Plant under construction	23	[2]
Virginia Electric and Power Company | North Anna
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	88.40%	[2]
Plant in service	2,486	[2]
Accumulated depreciation	(1,109)	[2]
Nuclear fuel	597	[2]
Accumulated amortization of nuclear fuel	(434)	[2]
Plant under construction	76	[2]
Virginia Electric and Power Company | Clover Power Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	50.00%	[2]
Plant in service	568	[2]
Accumulated depreciation	(199)	[2]
Nuclear fuel	0	[2]
Accumulated amortization of nuclear fuel	0	[2]
Plant under construction	$ 6	[2]

[1] Unit jointly owned by Dominion.

[2] Units jointly owned by Virginia Power.