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COVID-19 COVID-19 (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 USD ($) number | Dec. 27, 2020 USD ($)
Unusual or Infrequent Item, or Both [Line Items] |  |
Total Proceeds To Be Provided to U.S. Airlines From Payroll Support Program Extension |  | $ 15,000.0
Payroll Support Program Grant Extension |  |
Unusual or Infrequent Item, or Both [Line Items] |  |
Number of Installments Received | number | 2 |
Proceeds from Government Assistance, Payroll Support Program, CARES Act | $ 45.9 |
Total Proceeds from Payroll Support Program Grant | $ 91.8 |
COVID 19 |  |
Unusual or Infrequent Item, or Both [Line Items] |  |
Unusual Or Infrequent Item, Reduction Of Salary | 50.00% |

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