Commitments and Contingencies - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) aircraft	Dec. 31, 2023 USD ($)
Long-term Purchase Commitment [Line Items]
Number of aircraft on order with manufacturers | aircraft	320
Purchase obligation	$ 20,881,596
Minimum aircraft delivery delays that could trigger lessee cancellation clauses	1 year
Purchase agreements, termination commencement period	1 year
Non-refundable deposits on aircraft	$ 1,088,363	$ 1,203,068
Aircrafts
Long-term Purchase Commitment [Line Items]
Non-refundable deposits on aircraft	$ 1,100,000	$ 1,200,000