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Summary of Collateral Covenants and Cross Default Provisions (Detail) | 12 Months Ended
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Dec. 31, 2016
Credit Agreement |
Debt Instrument [Line Items] |
Collateral, Covenants and Cross Default Provisions | Secured by certain of United's international route authorities, specified take-off and landing slots at certain airports and certain other assets. The Credit Agreement requires the Company to maintain at least $3.0 billion of unrestricted liquidity at all times, which includes unrestricted cash, short-term investments and any undrawn amounts under any revolving credit facility and to maintain a minimum ratio of appraised value of collateral to the outstanding obligations under the Credit Agreement of 1.67 to 1.0 at all times. The Credit Agreement contains covenants that, among other things, restrict the ability of UAL and its restricted subsidiaries (as defined in the Credit Agreement) to incur additional indebtedness and to pay dividends on or repurchase stock, although the Company currently has ample ability under these restrictions to repurchase stock under the Company’s share repurchase program.The Credit Agreement contains events of default customary for this type of financing, including a cross default and cross acceleration provision to certain other material indebtedness of the Company.
6.375% Senior Notes due 2018 |
Debt Instrument [Line Items] |
Collateral, Covenants and Cross Default Provisions | The indentures for these notes contain covenants that, among other things, restrict the ability of the Company and its restricted subsidiaries (as defined in the indenture) to incur additional indebtedness and pay dividends on or repurchase stock, although the Company currently has ample ability under these restrictions to repurchase stock under the Company’s share repurchase program.
6% Senior Notes due 2020 |
Debt Instrument [Line Items] |
Collateral, Covenants and Cross Default Provisions | The indentures for these notes contain covenants that, among other things, restrict the ability of the Company and its restricted subsidiaries (as defined in the indenture) to incur additional indebtedness and pay dividends on or repurchase stock, although the Company currently has ample ability under these restrictions to repurchase stock under the Company’s share repurchase program.
5% Senior Notes due 2024 |
Debt Instrument [Line Items] |
Collateral, Covenants and Cross Default Provisions | The indentures for these notes contain covenants that, among other things, restrict the ability of the Company and its restricted subsidiaries (as defined in the indenture) to incur additional indebtedness and pay dividends on or repurchase stock, although the Company currently has ample ability under these restrictions to repurchase stock under the Company’s share repurchase program.

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