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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Earnings per share | The amounts used in computing basic and diluted earnings per share attributable to TDS common shareholders were as follows:
Year Ended December 31, | 2021 |  | 2020 |  | 2019
(Dollars and shares in millions, except per share amounts) |  |  |  |  |
Net income attributable to TDS common shareholders used in basic earnings per share | $ | 117 |  |  | $ | 226 |  |  | $ | 121 |
Adjustments to compute diluted earnings: |  |  |  |  |
Noncontrolling interest adjustment | (1) |  |  | (3) |  |  | (1) |
Net income attributable to TDS common shareholders used in diluted earnings per share | $ | 116 |  |  | $ | 223 |  |  | $ | 120 |
Weighted average number of shares used in basic earnings per share: |  |  |  |  |
Common Shares | 108 |  |  | 107 |  |  | 107 |
Series A Common Shares | 7 |  |  | 7 |  |  | 7 |
Total | 115 |  |  | 114 |  |  | 114 |
Effects of dilutive securities | 1 |  |  | 1 |  |  | 2 |
Weighted average number of shares used in diluted earnings per share | 116 |  |  | 115 |  |  | 116 |
Basic earnings per share attributable to TDS common shareholders | $ | 1.03 |  |  | $ | 1.97 |  |  | $ | 1.06 |
Diluted earnings per share attributable to TDS common shareholders | $ | 1.00 |  |  | $ | 1.93 |  |  | $ | 1.03 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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