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v3.19.3.a.u2

Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Segment allocation of goodwill | The changes in Dominion Energy’s and Dominion Energy Gas’ carrying amount and segment allocation of goodwill are presented below:
|  | Dominion Energy Virginia |  |  | Gas Transmission & Storage |  |  | Gas Distribution |  |  | Dominion Energy South Carolina |  |  | Contracted Generation |  |  | Corporate and Other |  |  | Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2017 (1) |  | $ | 2,106 |  |  | $ | 1,561 |  |  | $ | 2,496 |  |  | $ | — |  |  | $ | 242 |  |  |  | $— |  |  | $ | 6,405 |
Purchase Accounting Adjustment |  |  | — |  |  |  | 4 |  |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5 |
Balance at December 31, 2018 (1) |  | $ | 2,106 |  |  | $ | 1,565 |  |  | $ | 2,497 |  |  | $ | — |  |  | $ | 242 |  |  |  | $— |  |  | $ | 6,410 |
SCANA Combination (2) |  |  | — |  |  |  | 73 |  |  |  | 1,015 |  |  |  | 1,521 |  |  |  | — |  |  |  | — |  |  |  | 2,609 |
Contribution of SEMI to Wrangler (3) |  |  | — |  |  |  | (73 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (73 | )
Balance at December 31, 2019 (1) |  | $ | 2,106 |  |  | $ | 1,565 |  |  | $ | 3,512 |  |  | $ | 1,521 |  |  | $ | 242 |  |  |  | $— |  |  | $ | 8,946 |
Dominion Energy Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2017 (1) |  | $ | — |  |  | $ | 1,466 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |  | $— |  |  | $ | 1,466 |
Purchase Accounting Adjustment |  |  | — |  |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5 |
Balance at December 31, 2018 (1) |  | $ | — |  |  | $ | 1,471 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |  | $— |  |  | $ | 1,471 |
No events affecting goodwill |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance at December 31, 2019 (1) |  | $ | — |  |  | $ | 1,471 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |  | $— |  |  | $ | 1,471 |
(1) | Goodwill amounts do not contain any accumulated impairment losses.
(2) | See Note 3 for discussion of Dominion Energy’s acquisitions.
(3) | See Note 9 for additional information.
Components of intangible assets | The components of intangible assets are as follows:
|  | 2019 |  |  | 2018 |
At December 31, |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
(millions) |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 1,340 |  |  |  | $549 |  |  | $ | 1,033 |  |  |  | $363 |
Virginia Power |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 406 |  |  |  | $135 |  |  | $ | 384 |  |  |  | $134 |
Dominion Energy Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 178 |  |  |  | $ 72 |  |  | $ | 179 |  |  |  | $ 64 |
Annual amortization expense of intangible assets | Annual amortization expense for these intangible assets is estimated to be as follows:
|  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2023 |  |  | 2024 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  | $ | 88 |  |  | $ | 78 |  |  | $ | 70 |  |  | $ | 56 |  |  | $ | 49 |
Virginia Power |  | $ | 25 |  |  | $ | 19 |  |  | $ | 15 |  |  | $ | 8 |  |  | $ | 6 |
Dominion Energy Gas |  | $ | 9 |  |  | $ | 8 |  |  | $ | 8 |  |  | $ | 5 |  |  | $ | 4 |

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