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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Earnings per share | The amounts used in computing basic and diluted earnings per share attributable to UScellular shareholders were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
(Dollars and shares in millions, except per share amounts) |  |  |  |  |  |  |
Net income attributable to UScellular shareholders | $ | 34 |  |  | $ | 85 |  |  | $ | 128 |  |  | $ | 224 |
Weighted average number of shares used in basic earnings per share | 86 |  |  | 86 |  |  | 87 |  |  | 86 |
Effects of dilutive securities | 1 |  |  | 2 |  |  | 1 |  |  | 1 |
Weighted average number of shares used in diluted earnings per share | 87 |  |  | 88 |  |  | 88 |  |  | 87 |
Basic earnings per share attributable to UScellular shareholders | $ | 0.39 |  |  | $ | 0.98 |  |  | $ | 1.48 |  |  | $ | 2.60 |
Diluted earnings per share attributable to UScellular shareholders | $ | 0.38 |  |  | $ | 0.97 |  |  | $ | 1.46 |  |  | $ | 2.56 |

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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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