Investments (Investments Under Equity Method of Accounting) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Investment Balance	$ 916		$ 558
Commitment to invest in clean power and technology	50
Blue Racer Midstream LLC
Schedule of Equity Method Investments [Line Items]
Ownership%	50.00%
Investment Balance	510		39
Description	Midstream gas and related services
Fowler I Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership%	50.00%
Investment Balance	149		158
Description	Wind-powered merchant generation facility
NedPower Mount Storm LLC
Schedule of Equity Method Investments [Line Items]
Ownership%	50.00%
Investment Balance	131		137
Description	Wind-powered merchant generation facility
Iroquois Gas Transmission System, LP
Schedule of Equity Method Investments [Line Items]
Ownership%	24.72%
Investment Balance	105		102
Description	Gas transmission system
Elwood Energy LLC
Schedule of Equity Method Investments [Line Items]
Ownership%	0.00%	[1]	50.00%	[1]
Investment Balance	0	[1]	117	[1]
Description	Natural gas-fired merchant generation peaking facility	[1]
Ownership retained in cost method investment	0.50%	[1]
Other
Schedule of Equity Method Investments [Line Items]
Investment Balance	$ 21	[2]	$ 5	[2]

[1] Following the 2013 sale of Elwood, at December 31, 2013, Dominion retained a 0.5% cost method investment. At December 31, 2012, Dominion owned 50% and Elwood was therefore considered an equity method investment.

[2] Dominion has a $50 million commitment to invest in clean power and technology businesses through 2018.