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Commitments and Contingencies - Schedule of Commitments to Purchase Aircrafts (Details) | Sep. 30, 2018 commitment
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Airbus A350 |
Long-term Purchase Commitment [Line Items] |
Number of Firm Commitments | 45
Boeing 737 MAX |
Long-term Purchase Commitment [Line Items] |
Number of Firm Commitments | 154
Boeing 777-300ER |
Long-term Purchase Commitment [Line Items] |
Number of Firm Commitments | 1
Boeing 787 |
Long-term Purchase Commitment [Line Items] |
Number of Firm Commitments | 27
Embraer E175 |
Long-term Purchase Commitment [Line Items] |
Number of Firm Commitments | 25

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- Definition The minimum number of units that must be purchased, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes. + References No definition available. + Details
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