Organization, Basis of Presentation and Significant Accounting Policies (Details Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2009
Summary of Significant Accounting Policies (Textuals) [Abstract]
Prior period reclassification adjustment	$ 88
Regulatory assets that do not earn a current return	477
Net regulatory liabilities	440	480
Pumped storage hydroelectric station, Ownership percentage				16.67%
Net plant in service	30,948	30,743
Construction work in progress	2,304	2,293
Goodwill	6,418	6,447	6,441
West Virginia asset transfer	0
Other-than-temporary impairments	90	16	19
Bath County, Virginia
Summary of Significant Accounting Policies (Textuals) [Abstract]
Plant generation capacity	3,000
AGC | Bath County, Virginia
Summary of Significant Accounting Policies (Textuals) [Abstract]
Pumped storage hydroelectric station, Ownership percentage	40.00%
Plant generation capacity	1,200
Net plant in service	672
Construction work in progress	28
Virginia Electric and Power Company | Bath County, Virginia
Summary of Significant Accounting Policies (Textuals) [Abstract]
Pumped storage hydroelectric station, Ownership percentage	60.00%
FES
Summary of Significant Accounting Policies (Textuals) [Abstract]
Net plant in service	7,717	7,589
Construction work in progress	1,308	1,141
Goodwill	23	24
Other-than-temporary impairments	79	14	17
Competitive Energy Services
Summary of Significant Accounting Policies (Textuals) [Abstract]
Plant generation capacity	14,000
Net plant in service	10,118	11,599
Goodwill	800	896	890
West Virginia asset transfer	$ 67