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Goodwill and Intangible Assets | Nov. 18, 2019
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Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets | NOTE 11. GOODWILL AND INTANGIBLE ASSETS Goodwill The changes in Dominion Energy and Dominion Energy Gas’ carrying amount and segment allocation of goodwill are presented below:
|  | Power Generation |  | Gas Infrastructure |  |  | Power Delivery |  |  | Corporate and Other (1) |  |  | Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2016 (2) |  | $ | 1,422 |  | $ | 4,051 |  |  | $ | 926 |  |  | $ | — |  |  | $ | 6,399 |
Dominion Energy Questar Combination |  |  | — |  |  | 6 (3) |  |  |  | — |  |  |  | — |  |  |  | 6 |
Balance at December 31, 2017 (2) |  | $ | 1,422 |  | $ | 4,057 |  |  | $ | 926 |  |  | $ | — |  |  | $ | 6,405 |
Purchase Accounting Adjustment |  |  | — |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | 5 |
Balance at December 31, 2018 (2) |  | $ | 1,422 |  | $ | 4,062 |  |  | $ | 926 |  |  | $ | — |  |  | $ | 6,410 |
Dominion Energy Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2016 (2) |  | $ | — |  | $ | 1,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,466 |
No events affecting goodwill |  |  | — |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance at December 31, 2017 (2) |  | $ | — |  | $ | 1,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,466 |
Purchase Accounting Adjustment |  |  | — |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | 5 |
Balance at December 31, 2018 (2) |  | $ | — |  | $ | 1,471 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,471 |
(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) | See Note 3.
Other Intangible Assets The Companies’ other intangible assets are subject to amortization over their estimated useful lives. Dominion Energy’s amortization expense for intangible assets was $82 million, $80 million and $73 million for 2018, 2017 and 2016, respectively. In 2018, Dominion Energy acquired $127 million of intangible assets, primarily representing software and right-of-use assets, with an estimated weighted-average amortization period of approximately 15 years. Amortization expense for Virginia Power’s intangible assets was $31 million for both 2018 and 2017 and $29 million for 2016. In 2018, Virginia Power acquired $49 million of intangible assets, primarily representing software, with an estimated weighted-average amortization period of 11 years. Dominion Energy Gas’ amortization expense for intangible assets was $11 million, $9 million and $11 million for 2018, 2017 and 2016, respectively. In 2018, Dominion Energy Gas acquired $35 million of intangible assets, primarily representing a contractual agreement with a local taxing authority, software and right-of-use assets, with an estimated weighted-average amortization period of approximately 13 years. The components of intangible assets are as follows:
|  | 2018 |  |  | 2017 |
At December 31, |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
(millions) |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 1,033 |  |  | $ | 363 |  |  | $ | 1,043 |  |  | $ | 358 |
Virginia Power |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 384 |  |  | $ | 134 |  |  | $ | 347 |  |  | $ | 114 |
Dominion Energy Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 179 |  |  | $ | 64 |  |  | $ | 151 |  |  | $ | 60 |
Annual amortization expense for these intangible assets is estimated to be as follows:
|  | 2019 |  |  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2023 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  | $ | 67 |  |  | $ | 56 |  |  | $ | 44 |  |  | $ | 34 |  |  | $ | 23 |
Virginia Power |  | $ | 29 |  |  | $ | 23 |  |  | $ | 16 |  |  | $ | 12 |  |  | $ | 6 |
Dominion Energy Gas |  | $ | 10 |  |  | $ | 9 |  |  | $ | 9 |  |  | $ | 7 |  |  | $ | 6 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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