Consolidated Balance Sheet (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Virginia Electric and Power Company [Member]
Allowance for Doubtful Accounts Receivable, Current	$ 11	$ 11
Allowance for Doubtful Other Receivables, Current	7	6
Common Stock, Shares Authorized	500,000	300,000
Common Stock, Shares, Outstanding	274,723	274,723
Dominion [Member]
Allowance for Doubtful Accounts Receivable, Current	29	26
Allowance for Doubtful Other Receivables, Current	$ 8	$ 9
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares, Outstanding	570,000,000	581,000,000