Operating Revenue (Operating Revenue) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Electric sales:
Regulated										$ 7,193	$ 7,102		$ 7,114
Nonregulated										2,511	2,483		2,721
Gas sales:
Regulated										323	250		287
Nonregulated										930	1,071		1,634
Gas transportation and storage										1,535	1,401		1,506
Other										628	528		503
Total operating revenue	3,185	[1]	3,432	2,980	3,523	3,101	3,332	3,005	3,397	13,120	12,835	[2]	13,765	[2]
Virginia Electric and Power Company
Electric sales:
Regulated										7,193	7,102		7,114
Gas sales:
Other										102	124		132
Total operating revenue	$ 1,745		$ 2,059	$ 1,710	$ 1,781	$ 1,630	$ 2,086	$ 1,756	$ 1,754	$ 7,295	$ 7,226		$ 7,246

[1] Recast to reflect Brayton Point and Kincaid as discontinued operations as described in Note 3.

[2] Recast to reflect Brayton Point and Kincaid as discontinued operations as described in Note 3 to the Consolidated Financial Statements. EPS amounts reflect the per share impact of the recast of $1.92 and $0.06 for 2012 and 2011, respectively.