Earnings Per Share (Calculation of Our Basic and Diluted EPS) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to Dominion	$ 379		$ 495
Average shares of common stock outstanding - Basic (shares)	581,600,000		576,600,000
Net effect of potentially dilutive securities (shares)	1,300,000	[1]	900,000	[1]
Average shares of common stock outstanding - Diluted (shares)	582,900,000		577,500,000
Earnings Per Common Share - Basic (dollars per share)	$ 0.65		$ 0.86
Earnings Per Common Share - Diluted (dollars per share)	$ 0.65		$ 0.86
Potentially dilutive securities excluded from computation of earnings per share (shares)			0

[1] Dilutive securities consist primarily of contingently convertible senior notes and Equity Units for 2014 and contingently convertible senior notes for 2013. See Note 14 in this report and Note 17 to the Consolidated Financial Statements in Dominion's and Virginia Power's Annual Report on Form 10-K for the year ended December 31, 2013 for more information.