Preferred Stock Preferred Stock (Schedule of Preferred Stock) (Details) (Virginia Electric and Power Company, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 $5.00	Dec. 31, 2013 $4.04	Dec. 31, 2013 $4.20	Dec. 31, 2013 $4.12	Dec. 31, 2013 $4.80	Dec. 31, 2013 $7.05	Dec. 31, 2013 $6.98	Dec. 31, 2013 Flex Money Market Preferred 12/02, Series A		Feb. 28, 2014 Flex Money Market Preferred 12/02, Series A Subsequent Event
Class of Stock [Line Items]
Dividend		$ 5.00	$ 4.04	$ 4.20	$ 4.12	$ 4.80	$ 7.05	$ 6.98
Issued and Outstanding Shares	2,590	107	13	15	32	73	500	600	1,250
Entitled Per Share Upon Liquidation	$ 100.00	$ 112.50	$ 102.27	$ 102.50	$ 103.73	$ 101.00	$ 100.00	$ 100.00	$ 100.00	[1]	$ 100.00	[1]
Dividend rate	6.12%

[1] Effective March 20, 2011 the rate was reset to 6.12% until March 20, 2014 after which the rate was due to be reset through an auction process. However, in February 2014, Virginia Power provided irrevocable notice to redeem the stock on March 20, 2014 at a price of $100 per share plus accumulated and unpaid dividends.