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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings per share | The amounts used in computing earnings per common share and the effects of potentially dilutive securities on the weighted average number of common shares were as follows:
| Three Months Ended March 31,
| 2019 |  | 2018
(Dollars and shares in millions, except per share amounts) |  |  |  |  |
Basic earnings per share attributable to TDS shareholders: |  |  |  |  |
Net income attributable to TDS shareholders used in basic earnings per share | $ | 59 |  |  | $ | 39 |
Adjustments to compute diluted earnings: |  |  |
Noncontrolling interest adjustment | (1 | ) |  | — |
Net income attributable to TDS shareholders used in diluted earnings per share | $ | 58 |  |  | $ | 39 |
Weighted average number of shares used in basic earnings per share: |  |  |
Common Shares | 107 |  |  | 104 |
Series A Common Shares | 7 |  |  | 7 |
Total | 114 |  |  | 111 |
Effects of dilutive securities | 2 |  |  | 2 |
Weighted average number of shares used in diluted earnings per share | 116 |  |  | 113 |
Basic earnings per share attributable to TDS shareholders | $ | 0.52 |  |  | $ | 0.35 |
Diluted earnings per share attributable to TDS shareholders | $ | 0.50 |  |  | $ | 0.34 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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