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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2025
Earnings Per Share [Abstract] |
Earnings per share | The amounts used in computing basic and diluted earnings (loss) per share attributable to TDS common shareholders were as follows:
| Three Months Ended March 31, |  |
| 2025 |  | 2024 |  |  |  |
(Dollars and shares in millions, except per share amounts) |  |  |  |  |  |  |
Net income (loss) attributable to TDS common shareholders | $ | (10) |  |  | $ | 12 |  |  |  |  |
Weighted average number of shares used in basic earnings (loss) per share: |  |  |  |  |  |  |
Common Shares | 108 |  |  | 106 |  |  |  |  |
Series A Common Shares | 7 |  |  | 7 |  |  |  |  |
Total | 115 |  |  | 113 |  |  |  |  |
Effects of dilutive securities | — |  |  | 4 |  |  |  |  |
Weighted average number of shares used in diluted earnings (loss) per share | 115 |  |  | 117 |  |  |  |  |
Basic earnings (loss) per share attributable to TDS common shareholders | $ | (0.09) |  |  | $ | 0.11 |  |  |  |  |
Diluted earnings (loss) per share attributable to TDS common shareholders | $ | (0.09) |  |  | $ | 0.10 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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