Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

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



	Dominion Generation			Dominion Energy			DVP		Corporate and Other⁽¹⁾		Total
(millions)
Dominion
Balance at December 31, 2014⁽²⁾	$	1,422	⁽³⁾	$	696	⁽³⁾	$	926	$	—	$	3,044
DCG acquisition	—			250		⁽⁴⁾	—		—		250
Balance at December 31, 2015⁽²⁾	$	1,422		$	946		$	926	$	—	$	3,294
Dominion Questar Combination	—			3,105		⁽⁴⁾	—		—		3,105
Balance at December 31, 2016⁽²⁾	$	1,422		$	4,051		$	926	$	—	$	6,399
Dominion Gas
Balance at December 31, 2014⁽²⁾	$	—		$	542		$	—	$	—	$	542
No events affecting goodwill	—			—			—		—		—
Balance at December 31, 2015⁽²⁾	$	—		$	542		$	—	$	—	$	542
No events affecting goodwill	—			—			—		—		—
Balance at December 31, 2016⁽²⁾	$	—		$	542		$	—	$	—	$	542


(1)	Goodwill recorded at the Corporate and Other segment is allocated to the primary operating segments for goodwill impairment testing purposes.


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


(3)	Recast to reflect nonregulated retail energy marketing operations in the Dominion Energy segment.


(4)	See Note 3 for discussion of Dominion's acquisitions.

The components of intangible assets are as follows:

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