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Earnings Per Share | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | 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 June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Earnings available to common stockholders | $ | 684 |  |  | $ | 821 |  |  | $ | 831 |  |  | $ | 920 |
Basic weighted-average shares outstanding | 274.7 |  |  | 306.9 |  |  | 279.3 |  |  | 310.3 |
Effect of employee stock awards | 0.9 |  |  | 0.8 |  |  | 0.9 |  |  | 0.8 |
Diluted weighted-average shares outstanding | 275.6 |  |  | 307.7 |  |  | 280.2 |  |  | 311.1 |
Earnings per share, basic | $ | 2.49 |  |  | $ | 2.67 |  |  | $ | 2.97 |  |  | $ | 2.96 |
Earnings per share, diluted | $ | 2.48 |  |  | $ | 2.67 |  |  | $ | 2.96 |  |  | $ | 2.96 |
The number of potentially dilutive securities excluded from the computation of diluted earnings per share amounts was not material. In the three and six months ended June 30, 2018, UAL repurchased approximately 5.9 million and 14.3 million shares, respectively, of UAL common stock in open market transactions for $0.4 billion and $1.0 billion, respectively. As of June 30, 2018, the Company had approximately $2.0 billion remaining to purchase shares under its share repurchase program. UAL may repurchase shares through the open market, privately negotiated transactions, block trades or accelerated share repurchase transactions from time to time in accordance with applicable securities laws. UAL will repurchase shares of UAL common stock subject to prevailing market conditions, and may discontinue such repurchases at any time. See Part II, Item 2, Unregistered Sales of Equity Securities and Use of Proceeds of this report for additional information.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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