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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Computation of Earnings Per Share | The computations of UAL's basic and diluted earnings (loss) per share are set forth below for the years ended December 31 (in millions, except per share amounts):
|  | 2023 |  | 2022 |  | 2021
Earnings (loss) available to common stockholders |  | $ | 2,618 |  |  | $ | 737 |  |  | $ | (1,964) |
Basic weighted-average shares outstanding |  | 327.8 |  |  | 326.4 |  |  | 321.9 |
Dilutive effect of stock warrants (a) |  | 2.2 |  |  | 1.5 |  |  | — |
Dilutive effect of employee stock awards |  | 1.9 |  |  | 2.2 |  |  | — |
Diluted weighted-average shares outstanding |  | 331.9 |  |  | 330.1 |  |  | 321.9 |
Earnings (loss) per share, basic |  | $ | 7.98 |  |  | $ | 2.26 |  |  | $ | (6.10) |
Earnings (loss) per share, diluted |  | $ | 7.89 |  |  | $ | 2.23 |  |  | $ | (6.10) |
Potentially dilutive securities (b) |  |  |  |  |  |
Stock warrants (a) |  | 1.5 |  |  | 3.5 |  |  | 0.9 |
Employee stock awards |  | 0.6 |  |  | 0.7 |  |  | 0.7 |
(a) Represent warrants issued to Treasury pursuant to the payroll support program, including extensions, and the loan program established under the CARES Act. See Note 2 of this report for additional information about these warrants. (b) Weighted-average potentially dilutive securities outstanding excluded from the computation of diluted earnings per share because the securities would have had an antidilutive effect.

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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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