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The COVID-19 Pandemic (Details) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
May 08, 2020 USD ($) Rate | Mar. 31, 2020 USD ($) aircraft Rate | Mar. 31, 2019 USD ($) Rate | Apr. 23, 2020 USD ($) $ / shares Rate shares
Subsequent Event [Line Items] |  |  |  |
Loyalty points, pre-purchase arrangement | $ 150.0 |  |  |
Class of Warrant or Right, Outstanding | shares |  |  |  | 2.6
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  |  |  | $ 9.50
Warrants and Rights Outstanding, Term |  |  |  | 5 years
CARES Act, Payroll Support Program, Grant | 685.0 |  |  |
CARES Act, Payroll Support Program, Total Payment | 936.0 |  |  |
CARES Act, Federal Tax Benefit |  | $ 12.1 |  |
Effective Income Tax Rate Reconciliation, Percent | Rate |  | 24.30% | 28.30% |
CARES Act, Payroll Tax Deferral, Expected Liquidity, Remainder of Fiscal Year | 67.0 |  |  |
Reduction in aircraft capital expenditures through 2022, relating to Airbus purchase agreement amendment | $ (1,100.0) |  |  |
Special Items - Fleet Impairment |  | $ 202.0 | $ 0.0 |
Number Of Aircraft Removed From Active Service | aircraft |  | 170 |  |
Employee Related Cost Reductions, Percentage, Salary Reduction, Officers | Rate |  | (20.00%) |  |
Employee Related Cost Reductions, Percentage, Salary Reduction, Officers - Upper Range | Rate |  | (50.00%) |  |
Unsecured Debt [Member] | US Department of Treasury [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 251.0
Long-term Debt, Term |  |  |  | 10 years
Debt Instrument, Interest Rate, Stated Percentage | Rate |  |  |  | 1.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Unsecured Debt [Member] | US Department of Treasury [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | Rate | 2.00% |  |  |

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