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Goodwill and Intangible Assets | 12 Months Ended
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Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets | NOTE 11. GOODWILL AND INTANGIBLE ASSETS Goodwill In September 2020, Dominion Energy updated its operating segments following the July 2020 agreement to sell its gas transmission and storage operations to BHE. See Note 3 for information on the goodwill recast to held for sale associated with the GT&S Transaction and Q-Pipe Transaction. In addition, goodwill associated with Dominion Energy’s nonregulated retail energy marketing operations was reassigned to the Corporate and Other segment using a relative fair value allocation approach with the historical information recast herein. The changes in Dominion Energy’s carrying amount and segment allocation of goodwill are presented below:
|  | Dominion Energy Virginia |  |  | Gas Distribution |  |  | Dominion Energy South Carolina |  |  | Contracted Assets |  |  | Corporate and Other |  | Total |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2018(1) |  | $ | 2,106 |  |  | $ | 2,497 |  |  | $ | — |  |  | $ | 242 |  |  | $ | 14 |  | $ | 4,859 |
SCANA Combination (2) |  |  | — |  |  |  | 1,015 |  |  |  | 1,521 |  |  |  | — |  |  |  | 73 |  |  | 2,609 |
Contribution of SEMI to Wrangler(3) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (73 | ) |  | (73 | )
Balance at December 31, 2019(1) |  | $ | 2,106 |  |  | $ | 3,512 |  |  | $ | 1,521 |  |  | $ | 242 |  |  | $ | 14 |  | $ | 7,395 |
Contribution to Wrangler(3) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (14 | ) |  | (14 | )
Balance at December 31, 2020(1) |  | $ | 2,106 |  |  | $ | 3,512 |  |  | $ | 1,521 |  |  | $ | 242 |  |  | $ | — |  | $ | 7,381 |
(1) Goodwill amounts do not contain any accumulated impairment losses. (2) See Note 3 for more information on the SCANA Combination. As a result of the December 2019 segment realignment, the acquired goodwill was reassigned using a relative fair value approach. (3) See Note 9 for additional information including amounts reclassified to held for sale at December 31, 2020. 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 $69 million, $95 million and $72 million for 2020, 2019 and 2018, respectively. In 2020, Dominion Energy acquired $152 million of intangible assets, primarily representing software and right-of-use assets, with an estimated weighted-average amortization period of approximately 11 years. Amortization expense for Virginia Power’s intangible assets was $28 million, $30 million and $31 million for 2020, 2019 and 2018, respectively. In 2020, Virginia Power acquired $95 million of intangible assets, primarily representing software, with an estimated weighted-average amortization period of 11 years. The components of intangible assets are as follows:
|  | 2020 |  |  | 2019 |
At December 31, |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 1,295 |  |  | $ | 530 |  |  | $ | 1,162 |  |  | $ | 477 |
Virginia Power |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Software, licenses and other |  | $ | 482 |  |  | $ | 148 |  |  | $ | 406 |  |  | $ | 135 |
Annual amortization expense for these intangible assets is estimated to be as follows:
|  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dominion Energy |  | $ | 77 |  | $ | 56 |  | $ | 42 |  | $ | 34 |  | $ | 26 |
Virginia Power |  | $ | 32 |  | $ | 18 |  | $ | 12 |  | $ | 9 |  | $ | 6 |

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