Dispositions (Schedule of Disposal Groups, Including Discontinued Operations, Income Statement) (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended				6 Months Ended				3 Months Ended	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012		Jun. 30, 2013 Brayton Point and Kincaid		Jun. 30, 2012 Brayton Point and Kincaid		Jun. 30, 2013 Brayton Point and Kincaid		Jun. 30, 2012 Brayton Point and Kincaid		Jun. 30, 2012 State Line and Salem Harbor	Jun. 30, 2012 State Line and Salem Harbor
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Current assets	$ 140
Property, plant and equipment, net	192
Other assets	15
Total assets	347
Current liabilities	17
Asset retirement obligations	19
Other liabilities	1
Total liabilities	37	0	[1]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Operating revenue				63		49		217		114		22	52
Loss before income taxes				(119)	[2]	(26)	[2]	(118)	[2]	(48)	[2]	(32)	(30)
Charges related to early redemption of debt				$ 64

[1] Dominion’s Consolidated Balance Sheet at December 31, 2012 has been derived from the audited Consolidated Financial Statements at that date.

[2] 2013 results include $64 million of charges related to the early redemption of Brayton Point and Kincaid debt. See Note 14 in this report for more information.