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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Licenses | Activity related to UScellular's Licenses is presented below.
| 2022 |  | 2021
(Dollars in millions) |  |  |
Balance at beginning of year | $ | 4,088 |  |  | $ | 2,629 |
Acquisitions | 595 |  |  | 1,464 |
Impairment 1 | (3) |  |  | — |
Transferred to Assets held for sale | 1 |  |  | (18) |
Exchanges - Licenses received | 1 |  |  | — |
Capitalized interest | 8 |  |  | 13 |
Balance at end of year | $ | 4,690 |  |  | $ | 4,088 |
1Impairment charge relates to licenses in markets where UScellular no longer expects to meet FCC buildout requirements.

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b),(d) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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