Earnings Per Share (Calculation of Our Basic and Diluted EPS) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Earnings Per Share [Abstract]
Net income attributable to Dominion	$ 159		$ 202		$ 538		$ 697	[1]
Average shares of common stock outstanding - Basic (shares)	581,900,000		578,100,000		581,700,000		577,300,000
Net effect of potentially dilutive securities (shares)	2,000,000	[2]	800,000	[2]	1,700,000	[2]	900,000	[2]
Average shares of common stock outstanding - Diluted (shares)	583,900,000		578,900,000		583,400,000		578,200,000
Earnings Per Common Share - Basic (dollars per share)	$ 0.27		$ 0.35		$ 0.92		$ 1.21
Earnings Per Common Share - Diluted (dollars per share)	$ 0.27		$ 0.35		$ 0.92		$ 1.21
Potentially dilutive securities excluded from computation of earnings per share (shares)	0				0

[1] Net of $47 million and $(76) million tax for the three months ended June 30, 2014 and 2013, respectively, and net of $126 million and $(22) million for the six months ended June 30, 2014 and 2013, respectively.

[2] Dilutive securities consist primarily of contingently convertible senior notes and the 2013 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.