Related Party Transactions (Details) (Virginia Electric and Power Company, USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Commodity purchases from affiliates		$ 417	$ 368	$ 376
Services provided by affiliates		415	399	393
Services provided to affiliates		21	19	21
Purchased nuclear fuel-related inventory	39
Outstanding borrowings, net of repayments, under the Dominion money pool for Virginia Power's nonregulated subsidiaries			192
Dominion
Related Party Transaction [Line Items]
Short term demand note borrowings		$ 97	$ 243