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Commitments and Contingencies - Narrative (Details) $ in Billions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 25, 2024 USD ($) aircraft | Apr. 30, 2024 aircraft | Jun. 30, 2024 USD ($) aircraft | Jun. 30, 2024 USD ($) aircraft
B737-8 |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of aircraft deliveries | aircraft |  |  | 5 | 10
Number of aircraft options shifted | aircraft |  | 1 |  |
B737-8 | Subsequent Event |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of aircraft orders converted | aircraft | 2 |  |  |
B-737-700 |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of aircraft retirements | aircraft |  |  | 6 |
B-737-800 |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of aircraft retirements | aircraft |  |  | 1 |
B737-7 | Subsequent Event |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of aircraft options exercised | aircraft | 2 |  |  |
Aircraft |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Capital commitments remainder of 2024 |  |  | $ 1.8 | $ 1.8
Capital commitments in 2025 |  |  | 1.7 | 1.7
Capital commitments in 2026 |  |  | 1.8 | 1.8
Capital commitments in 2027 |  |  | 2.6 | 2.6
Capital commitments in 2028 |  |  | 2.9 | 2.9
Capital commitments in 2029 |  |  | 2.5 | 2.5
Capital commitments thereafter |  |  | $ 2.8 | $ 2.8
Aircraft | Subsequent Event |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Capital commitments in 2025 | $ 1.8 |  |  |

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