Commitments and Contingencies - Narrative (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) aircraft	Dec. 31, 2022 USD ($)
Long-term Purchase Commitment [Line Items]
Number of aircraft on order with manufacturers | aircraft	359
Purchase obligation	$ 23,212,630
Minimum aircraft delivery delays that could trigger lessee cancellation clauses	1 year
Purchase agreements, termination commencement period	1 year
Non-refundable deposits on aircraft	$ 1,105,299	$ 1,344,973
Aircrafts
Long-term Purchase Commitment [Line Items]
Non-refundable deposits on aircraft	$ 1,100,000	$ 1,300,000