Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2014
Frequent Flyer Accounting	Frequent Flyer Accounting. On March 30, 2014, US Airways exited Star Alliance. Effective with the exit date, the Company updated its estimated selling price for miles to a value based on the equivalent ticket value less fulfillment discount, which incorporates the expected redemption of miles. The equivalent ticket value used as the basis for the estimated selling price of miles is based on the prior 12 months’ weighted average equivalent ticket value of similar fares as those used to settle award redemptions while taking into consideration such factors as redemption pattern, cabin class, loyalty status and geographic region. The estimated selling price of miles is adjusted by a fulfillment discount that considers a number of factors, including redemption patterns of various customer groups. This change in estimate was applied on a prospective basis beginning April 1, 2014. The estimated impact of this change on consolidated revenue is expected to be an increase of approximately $75 million in 2014.
Related Party Receivables	Related Party Receivables. At December 31, 2013, United had receivables from two affiliates, which were wholly-owned subsidiaries of UAL, of $232 million that were classified against stockholder’s equity. UAL transferred all of its equity interest in each of the two subsidiaries to United in the first quarter of 2014, and the transfers have been reflected as reductions in paid in capital.
Recently Issued Accounting Standards	Recently Issued Accounting Standards. In May 2014, the Financial Accounting Standards Board (“FASB”) amended the FASB Accounting Standards Codification and created a new Topic 606, Revenue from Contracts with Customers. This amendment prescribes that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendment supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. The amendments will become effective for the Company’s annual and interim reporting periods beginning January 1, 2017. The Company is evaluating the impact on its financial statements.

Disclosure of accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) how the level of the valuation allowance for receivables is determined (3) when impairments, charge-offs or recoveries are recognized for such receivables (4) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (5) the treatment of any premiums or discounts or unearned income (6) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (7) the treatment of foreclosures or repossessions (8) the nature and amount of any guarantees to repurchase receivables.

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