Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	$ 20,842
Subsidiary preferred stock	257		257
Valuation of certain fair value hedges	55		93
Deferred issuance expenses	2		2
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	18,396	[1]	16,841	[1]
Long-term debt - VIEs	0	[2]	860	[2]
Junior subordinated notes	1,373	[2]	1,373	[2]
Remarketable subordinated notes	1,080	[2]	0	[2]
Subsidiary preferred stock	257	[3]	257	[3]
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	19,887	[1],[4]	19,898	[1],[4]
Long-term debt - VIEs	0	[2],[4]	864	[2],[4]
Junior subordinated notes	1,394	[2],[4]	1,430	[2],[4]
Remarketable subordinated notes	1,192	[2],[4]	0	[2],[4]
Subsidiary preferred stock	261	[3],[4]	255	[3],[4]
Virginia Electric and Power Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	8,043
Subsidiary preferred stock	257		257
Virginia Electric and Power Company | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	8,032	[1]	6,669	[1]
Subsidiary preferred stock	257	[3]	257	[3]
Virginia Electric and Power Company | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	8,897	[1],[4]	8,270	[1],[4]
Subsidiary preferred stock	$ 261	[3],[4]	$ 255	[3],[4]

[1] Carrying amount includes amounts which represent the unamortized discount and premium. At December 31, 2013, and 2012, includes the valuation of certain fair value hedges associated with Dominion's fixed rate debt, of approximately $55 million and $93 million, respectively.

[2] Carrying amount includes amounts which represent the unamortized discount or premium.

[3] Includes deferred issuance expenses of $2 million at December 31, 2013 and 2012.

[4] Fair value is estimated using market prices, where available, and interest rates currently available for issuance of debt with similar terms and remaining maturities. All fair value measurements are classified as Level 2. The carrying amount of debt issues with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value.