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Commitments and Contingencies - Flight Equipment Commitments (Details) $ in Millions | Mar. 31, 2024 USD ($) aircraft
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Unrecorded Unconditional Purchase Obligation [Line Items] |
Remainder of 2024 | $ | $ 820
2025 | $ | 1,165
2026 | $ | 1,144
2027 | $ | 1,011
2028 | $ | 1,529
Thereafter | $ | 1,198
Total | $ | $ 6,867
Remainder of 2024 | 19
2025 | 25
2026 | 24
2027 | 14
2028 | 23
Thereafter | 18
Total | 123
Airbus A321neo |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Remainder of 2024 | 4
2025 | 5
2026 | 4
2027 | 9
2028 | 16
Thereafter | 14
Total | 52
Airbus A220 |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Remainder of 2024 | 15
2025 | 20
2026 | 20
2027 | 5
2028 | 7
Thereafter | 4
Total | 71
Number of available aircraft | 20

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