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Common Stockholders' Equity and Preferred Securities | 12 Months Ended
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Dec. 31, 2017
Common Stockholders' Equity and Preferred Securities | NOTE 3 – COMMON STOCKHOLDERS’ EQUITY AND PREFERRED SECURITIES In 2017, UAL repurchased approximately 28 million shares of UAL common stock for $1.8 billion, completing its July 2016 repurchase authorization. In December 2017, UAL’s Board of Directors authorized a new $3.0 billion share repurchase program to acquire UAL’s common stock. As of December 31, 2017, the Company had approximately $3.0 billion remaining to purchase shares under its existing share repurchase authority. 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 may repurchase shares of UAL common stock subject to prevailing market conditions, and may discontinue such repurchases at any time. See Part II, Item 5, Market for registrant’s common equity, related stockholder matters and issuer purchases of equity securities, of this report for additional information. In 2017, the Company retired 25 million treasury shares that were originally acquired at an average cost of approximately $63 per share. At December 31, 2017, approximately 10 million shares of UAL’s common stock were reserved for future issuance related to the issuance of equity-based awards under the Company’s incentive compensation plans. As of December 31, 2017, UAL had two shares of junior preferred stock (par value $0.01 per share) outstanding. In addition, UAL is authorized to issue 250 million shares of preferred stock (without par value) under UAL’s amended and restated certificate of incorporation.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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