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Leases, Commitments and Contingencies - Commitments and Obligations (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Operating lease payments for aircraft and facility obligations |  |
Oct - Dec 2019 | $ 17,603 |
2020 | 91,892 |
2021 | 80,540 |
2022 | 70,900 |
2023 | 65,521 |
Thereafter | 103,819 |
Total | 430,275 |
Firm aircraft and spare engine commitments |  |
Oct - Dec 2019 | 167,037 |
2020 | 187,757 |
2021 | 11,000 |
Total | 365,794 |
Interest commitments |  |
Oct - Dec 2019 | 31,628 |
2020 | 116,550 |
2021 | 101,468 |
2022 | 87,294 |
2023 | 71,252 |
Thereafter | 174,805 |
Total | 582,997 |
Principal maturities on long-term debt |  |
Oct - Dec 2019 | 91,192 |
2020 | 361,131 |
2021 | 344,937 |
2022 | 358,586 |
2023 | 367,322 |
Thereafter | 1,485,420 |
Total long-term debt | 3,008,588 | $ 3,185,438
Total commitments and obligations |  |
Oct - Dec 2019 | 307,460 |
2020 | 757,330 |
2021 | 537,945 |
2022 | 516,780 |
2023 | 504,095 |
Thereafter | 1,764,044 |
Total | $ 4,387,654 |
Variable interest rate (as a percent) | 0.10% |
Previously reported |  |
Operating lease payments for aircraft and facility obligations |  |
Oct - Dec 2019 | $ 87,256 |
2020 | 101,741 |
2021 | 90,787 |
2022 | 72,593 |
2023 | 65,749 |
Thereafter | 59,820 |
Total | $ 477,946 |

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