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v3.20.2

Debt - Narrative (Details) |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 28, 2020 USD ($) | Jul. 02, 2020 USD ($) | Apr. 20, 2020 USD ($) | Apr. 07, 2020 USD ($) | Mar. 20, 2020 USD ($) | Mar. 09, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Total funding provided under the Payroll Support Program |  |  | $ 5,100,000,000 |  |  |  | $ 5,100,000,000 | $ 5,100,000,000 |  |
Proceeds from issuance of debt |  |  |  |  |  |  |  | 13,024,000,000 | $ 1,109,000,000 |
Used Aircraft Facility | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor |  |  |  |  |  | 1.00% |  |  |  |
Face amount |  |  |  |  |  | $ 2,000,000,000 |  |  |  |
Minimum required unrestricted cash and cash equivalents and unused commitments available |  |  |  |  |  | $ 2,000,000,000.0 |  |  |  |
Minimum required ratio of appraised value of collateral to the outstanding obligations |  |  |  |  |  | 1.60 |  |  |  |
Used Aircraft Facility | Before 180 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 2.00% |  |  |  |
Used Aircraft Facility | Before 180 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 1.00% |  |  |  |
Used Aircraft Facility | 180-270 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 2.25% |  |  |  |
Used Aircraft Facility | 180-270 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 1.25% |  |  |  |
Used Aircraft Facility | 270 Days and Longer | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 2.50% |  |  |  |
Used Aircraft Facility | 270 Days and Longer | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  | 1.50% |  |  |  |
Spare Parts Facility | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor |  |  |  |  | 1.00% |  |  |  |  |
Face amount |  |  |  |  | $ 500,000,000 |  |  |  |  |
Minimum required unrestricted cash and cash equivalents and unused commitments available |  |  |  |  | $ 2,000,000,000.0 |  |  |  |  |
Minimum required ratio of appraised value of collateral to the outstanding obligations |  |  |  |  | 1.80 |  |  |  |  |
Minimum required ratio of appraised value of collateral to the outstanding obligations if certain spare parts are used |  |  |  |  | 2.00 |  |  |  |  |
Spare Parts Facility | 90-180 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 2.75% |  |  |  |  |
Spare Parts Facility | 90-180 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 1.75% |  |  |  |  |
Spare Parts Facility | Before 90 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 3.00% |  |  |  |  |
Spare Parts Facility | Before 90 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 2.00% |  |  |  |  |
Spare Parts Facility | 180-270 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 3.25% |  |  |  |  |
Spare Parts Facility | 180-270 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 2.25% |  |  |  |  |
Spare Parts Facility | 270 Days and Longer | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 3.50% |  |  |  |  |
Spare Parts Facility | 270 Days and Longer | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  | 2.50% |  |  |  |  |
Spare Engines Facility | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor |  |  |  | 1.00% |  |  |  |  |  |
Face amount |  |  |  | $ 250,000,000 |  |  |  |  |  |
Minimum required unrestricted cash and cash equivalents and unused commitments available |  |  |  | $ 2,000,000,000.0 |  |  |  |  |  |
Minimum required ratio of appraised value of collateral to the outstanding obligations |  |  |  | 1.40 |  |  |  |  |  |
Spare Engines Facility | Before 180 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 3.00% |  |  |  |  |  |
Spare Engines Facility | Before 180 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 2.00% |  |  |  |  |  |
Spare Engines Facility | 180-270 Days | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 3.25% |  |  |  |  |  |
Spare Engines Facility | 180-270 Days | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 2.25% |  |  |  |  |  |
Spare Engines Facility | 270 Days and Longer | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 3.50% |  |  |  |  |  |
Spare Engines Facility | 270 Days and Longer | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  | 2.50% |  |  |  |  |  |
PSP Note | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  | $ 1,500,000,000 | $ 1,500,000,000 |  |
PSP Note | Unsecured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Term of debt |  |  | 10 years |  |  |  | 10 years |  |  |
PSP Note | Years 1 through 5 | Unsecured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  | 1.00% | 1.00% |  |
PSP Note | Years 6 through 10 | Unsecured Debt | SOFR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  |  |  |  |  |  | 2.00% |  |  |
6.50% Senior Secured Notes due 2027 | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Face amount |  | $ 3,800,000,000 |  |  |  |  |  |  |  |
Stated interest rate |  | 6.50% |  |  |  |  |  |  |  |
MP Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Face amount |  | $ 3,000,000,000.0 |  |  |  |  |  |  |  |
Proceeds from issuance of debt |  | $ 3,000,000,000.0 |  |  |  |  |  |  |  |
MP Term Loan Facility | Line of Credit | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor |  | 1.00% |  |  |  |  |  |  |  |
Percent spread on variable rate |  | 5.25% |  |  |  |  |  |  |  |
Bridge Loan | Bridge Loan |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  |  |  |  | $ 200,000,000
Treasury Loan | Line of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum capacity under loan facility (up to) | $ 5,200,000,000 |  |  |  |  |  |  |  |  |
Face amount | 520,000,000 |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt | $ 520,000,000 |  |  |  |  |  |  |  |  |
Treasury Loan | Line of Credit | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor | 0.00% |  |  |  |  |  |  |  |  |
Percent spread on variable rate | 3.00% |  |  |  |  |  |  |  |  |
United Airlines, Inc. |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  |  |  |  |  | $ 13,024,000,000 | $ 1,109,000,000 |
Revolving Credit Facility | United Airlines, Inc. | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Available under revolving credit facility |  | $ 1,000,000,000.0 |  |  |  |  | $ 1,000,000,000.0 | $ 1,000,000,000.0 |  |
Proceeds from lines of credit |  | 1,000,000,000.0 |  |  |  |  |  |  |  |
Maximum capacity under loan facility (up to) |  | $ 2,000,000,000.0 |  |  |  |  |  |  |  |
Revolving Credit Facility | United Airlines, Inc. | Secured Debt | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable rate floor |  | 0.00% |  |  |  |  |  |  |  |
Percent spread on variable rate |  | 2.25% |  |  |  |  |  |  |  |
Revolving Credit Facility | United Airlines, Inc. | Secured Debt | Alternative Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent spread on variable rate |  | 1.25% |  |  |  |  |  |  |  |

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