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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Computation of Earnings Per Share | The computations of UAL’s basic and diluted earnings per share are set forth below (in millions, except per share amounts):
|  | Three Months Ended March 31, |
|  | 2018 |  |  | 2017 |
Earnings available to common stockholders |  | $ | 147 |  |  | $ | 99 |
Basic weighted-average shares outstanding |  |  | 283.9 |  |  |  | 313.7 |
Effect of employee stock awards |  |  | 1.0 |  |  |  | 0.9 |
Diluted weighted-average shares outstanding |  |  | 284.9 |  |  |  | 314.6 |
Earnings per share, basic and diluted |  | $ | 0.52 |  |  | $ | 0.32 |

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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/2003/role/presentationRef -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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