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Wireless Licenses, Goodwill and Other Intangible Assets | 3 Months Ended
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Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Wireless Licenses, Goodwill, and Other Intangible Assets |
Note 4. Wireless Licenses, Goodwill, and Other Intangible Assets
Wireless Licenses The carrying amounts of our Wireless licenses are as follows:
| At March 31, | At December 31,
(dollars in millions) | 2023 | 2022
Wireless licenses | $ | 150,485 |  | $ | 149,796 |
At March 31, 2023 and 2022, approximately $38.9 billion and $53.2 billion, respectively, of wireless licenses were under development for commercial service for which we were capitalizing interest costs. We recorded approximately $449 million and $452 million of capitalized interest on wireless licenses for the three months ended March 31, 2023 and 2022, respectively. During the three months ended March 31, 2023, we renewed various wireless licenses in accordance with FCC regulations. The average renewal period for these licenses was 15 years. Goodwill Changes in the carrying amount of Goodwill are as follows:
(dollars in millions) | Consumer |  | Business |  | Other |  | Total
Balance at January 1, 2023 | $ | 21,142 |  |  | $ | 7,502 |  |  | $ | 27 |  |  | $ | 28,671 |
Reclassifications, adjustments and other | — |  |  | 3 |  |  | — |  |  | 3 |
Balance at March 31, 2023 | $ | 21,142 |  |  | $ | 7,505 |  |  | $ | 27 |  |  | $ | 28,674 |
Other Intangible Assets The following table displays the composition of Other intangible assets, net as well as the respective amortization periods:
| At March 31, 2023 |  | At December 31, 2022
(dollars in millions) | Gross Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Customer lists (5 to 13 years) | $ | 4,335 |  |  | $ | (1,776) |  |  | $ | 2,559 |  |  | $ | 4,335 |  |  | $ | (1,646) |  |  | $ | 2,689 |
Non-network internal-use software (7 years) | 23,838 |  |  | (16,835) |  |  | 7,003 |  |  | 23,421 |  |  | (16,397) |  |  | 7,024 |
Other (4 to 25 years) | 2,817 |  |  | (1,133) |  |  | 1,684 |  |  | 2,806 |  |  | (1,058) |  |  | 1,748 |
Total | $ | 30,990 |  |  | $ | (19,744) |  |  | $ | 11,246 |  |  | $ | 30,562 |  |  | $ | (19,101) |  |  | $ | 11,461 |
The amortization expense for Other intangible assets was as follows:
|  |  | Three Months Ended
(dollars in millions) |  |  | March 31,
2023 |  |  | $ | 647 |
2022 |  |  | 635 |
The estimated future amortization expense for Other intangible assets for the remainder of the current year and next 5 years is as follows:
Years | (dollars in millions)
Remainder of 2023 | $ | 1,903 |
2024 | 2,317 |
2025 | 2,121 |
2026 | 1,879 |
2027 | 1,318 |
2028 | 902 |

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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 https://asc.fasb.org/topic&trid=2144416 + Details
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