Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Segment allocation of goodwill

The changes in Dominion's carrying amount and segment allocation of goodwill are presented below:

	Dominion Generation		Dominion Energy			DVP		Corporate and Other		Total
(millions)
Balance at December 31, 2010(1)	$	1,338	$	712		$	1,091	$	—	$	3,141
Impairments/adjustments	—		—			—		—		—
Balance at December 31, 2011(1)	$	1,338	$	712		$	1,091	$	—	$	3,141
Asset disposition adjustment	—		(11		)	—		—		(11		)
Balance at December 31, 2012(1)	$	1,338	$	701		$	1,091	$	—	$	3,130

(1) Goodwill amounts do not contain any accumulated impairment losses.

Components of intangible assets

The components of intangible assets are as follows:

At December 31,	2012				2011
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
(millions)
Dominion
Software, licenses and other	$	859	$	327	$	888	$	278
Emissions allowances	5		1		80		53
Total	$	864	$	328	$	968	$	331
Virginia Power
Software, licenses and other	$	303	$	122	$	285	$	102
Total	$	303	$	122	$	285	$	102

Annual amortization expense of intangible assets

Annual amortization expense for these intangible assets is estimated to be as follows:

	2013		2014		2015		2016		2017
(millions)
Dominion	$	65	$	56	$	43	$	37	$	25
Virginia Power	$	20	$	18	$	12	$	8	$	5