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Commitments and Contingencies - Aircraft and Engine Orders (Details)	6 Months Ended
	Jun. 30, 2024 aircraft engine
Air Transportation Equipment
Long-term Purchase Commitment [Line Items]
Remainder of 2024	11
2025	37
2026	43
2027	35
2028	40
Thereafter	32
Total	198
Aircraft Engine
Long-term Purchase Commitment [Line Items]
Remainder of 2024 | engine	1
2025 | engine	4
2026 | engine	4
2027 | engine	3
2028 | engine	2
Thereafter | engine	0
Total | engine	14
A320neo | Air Transportation Equipment
Long-term Purchase Commitment [Line Items]
Remainder of 2024	0
2025	14
2026	19
2027	14
2028	2
Thereafter	0
Total	49
A321neo | Air Transportation Equipment
Long-term Purchase Commitment [Line Items]
Remainder of 2024	11
2025	23
2026	24
2027	21
2028	38
Thereafter	32
Total	149

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