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Commitments (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) airbus aircraft
Unrecorded Unconditional Purchase Obligation [Line Items] |
2021 | $ 1,000
2022 | 700
2023 | 1,500
2024 | 1,800
2025 | 1,200
Thereafter | 1,600
Other Commitments [Abstract] |
Restricted assets pledged related to workers compensation insurance policies and other business partner agreements | $ 23
Percentage of employees represented by unions under collective bargaining agreements | 51.00%
Employment agreement | five years
Employment agreement automatic renewal term | five years
Renewal notice period | 90 days
A-321 Neo |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Number of aircraft and spare engine orders by the firm | airbus | 72
Number of aircraft scheduled to receive next year | aircraft | 8
A220-300 |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Number of aircraft and spare engine orders by the firm | airbus | 69
Number of aircraft scheduled to receive next year | aircraft | 7

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