Comprehensive Income (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Stockholders' Equity Note [Abstract]
Net income including noncontrolling interests	$ 396		$ 579		$ 1,219		$ 2,522
Other comprehensive income (loss):
Net other comprehensive loss associated with effective portion of changes in fair value of derivatives designated as cash flow hedges, net of taxes and amounts reclassified to earnings	(94)	[1]	(56)		(172)	[1]	(61)
Other, net of tax	(76)	[2]	70	[3]	3		86	[3]
Other comprehensive income	(170)		14		(169)		25
Comprehensive income including noncontrolling interests	226		593		1,050		2,547
Noncontrolling Interests	4		4		12		12
Total comprehensive income attributable to Dominion	$ 222		$ 589		$ 1,038		$ 2,535

[1] Primarily reflects unfavorable changes in fair value due to a decrease in interest rates.

[2] Primarily reflects a net decrease in unrealized gains on investments held in nuclear decommissioning trusts.

[3] Primarily reflects a net increase in unrealized gains on investments held in nuclear decommissioning trusts.