Quarterly Financial and Common Stock Data (Quarterly Financial and Common Stock Data) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended					3 Months Ended																12 Months Ended
	Mar. 31, 2010	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009	Dec. 31, 2011 Dominion [Member]		Sep. 30, 2011 Dominion [Member]		Jun. 30, 2011 Dominion [Member]		Mar. 31, 2011 Dominion [Member]		Dec. 31, 2010 Dominion [Member]		Sep. 30, 2010 Dominion [Member]		Jun. 30, 2010 Dominion [Member]		Mar. 31, 2010 Dominion [Member]		Dec. 31, 2011 Dominion [Member]	Dec. 31, 2010 Dominion [Member]
Operating Revenue		$ 14,379		$ 15,197		$ 14,798	$ 3,178		$ 3,803		$ 3,341		$ 4,057		$ 3,746		$ 3,950		$ 3,333		$ 4,168
Income from operations		2,861		5,700		2,569	340		833		725		963		737		1,119		3,110		734
Income from continuing operations		1,408	[1]	2,963	[1]	1,261	201	[1]	392	[1]	336	[1]	479	[1]	306	[1]	575	[1]	1,759	[1]	323	[1]
Income (loss) from discontinued operations	149			(155)	[1]										(8)	[1]	0	[1]	2	[1]	(149)	[1]
Net income including noncontrolling interests		1,426		2,825	[2]	1,304	207		396		340		483		303		579		1,765		178
Net income attributable to Dominion		$ 1,408		$ 2,808		$ 1,287	$ 201		$ 392		$ 336		$ 479		$ 298		$ 575		$ 1,761		$ 174
Income from continuing operations - basic		$ 2.46	[1]	$ 5.03	[1]	$ 2.13	$ 0.35	[1]	$ 0.69	[1]	$ 0.59	[1]	$ 0.83	[1]	$ 0.53	[1]	$ 0.98	[1]	$ 2.98	[1]	$ 0.54	[1]
Income (loss) from discontinued operations - basic		$ 0.00		$ (0.26)	[1]	$ 0.04									$ (0.01)	[1]	$ 0.00	[1]	$ 0.00	[1]	$ (0.25)	[1]
Net income attributable to Dominion - Basic		$ 2.46		$ 4.77		$ 2.17	$ 0.35		$ 0.69		$ 0.59		$ 0.83		$ 0.52		$ 0.98		$ 2.98		$ 0.29
Income from continuing operations - diluted		$ 2.45	[1]	$ 5.02	[1]	$ 2.13	$ 0.35	[1]	$ 0.69	[1]	$ 0.58	[1]	$ 0.82	[1]	$ 0.52	[1]	$ 0.98	[1]	$ 2.98	[1]	$ 0.54	[1]
Income (loss) from discontinued operations - diluted		$ 0.00		$ (0.26)	[1]	$ 0.04									$ (0.01)	[1]	$ 0.00	[1]	$ 0.00	[1]	$ (0.25)	[1]
Net income attributable to Dominion - Diluted		$ 2.45		$ 4.76		$ 2.17	$ 0.35		$ 0.69		$ 0.58		$ 0.82		$ 0.51		$ 0.98		$ 2.98		$ 0.29
Dividends Paid per share		$ 1.97		$ 1.83		$ 1.75	$ 0.4925		$ 0.4925		$ 0.4925		$ 0.4925		$ 0.4575		$ 0.4575		$ 0.4575		$ 0.4575
Common stock market value (high)							53.59		51.44		48.55		46.56		45.12		44.94		42.56		41.61		53.59	45.12
Common stock market value (low)							48.21		44.50		43.27		42.06		41.13		38.59		38.05		36.12		42.06	36.12

[1] Amounts attributable to Dominion's common shareholders.

[2] Other comprehensive income for the year ended December 31, 2009 excludes a $20 million ($12 million after-tax) adjustment to AOCI representing the cumulative effect of the change in accounting principle related to the recognition and presentation of other-than-temporary impairments.