Comprehensive Income (Details) (USD $) In Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Comprehensive Income
Net income including noncontrolling interests	$ 340	$ 1,765		$ 823		$ 1,943
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	(6)	(111)	[1]	(78)	[2]	(5)
Other, net of tax	4	(48)	[3]	79	[4]	16
Other comprehensive income (loss)	(2)	(159)		1		11
Comprehensive income including noncontrolling interests	338	1,606		824		1,954
Noncontrolling interests	4	4		8		8
Total comprehensive income attributable to Dominion	$ 334	$ 1,602		$ 816		$ 1,946

[1] Reflects the impact of changes in commodity prices and the reclassification of gains related to interest rate derivatives to earnings.

[2] Primarily reflects an increase in commodity prices.

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

[4] Primarily reflects a net increase in unrealized gains on investments held in nuclear decommissioning trusts and changes in net unrecognized amounts related to pension and OPEB.