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Commitments and Contingencies - Firm Commitments and Options to Purchase Aircraft (Details) | Mar. 31, 2019 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 | 171
Boeing 777-300ER |
Long-term Purchase Commitment [Line Items] |
Number of firm commitments | 4
Boeing 787 |
Long-term Purchase Commitment [Line Items] |
Number of firm commitments | 20
Embraer E175 |
Long-term Purchase Commitment [Line Items] |
Number of firm commitments | 25

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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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