Commitments and Contingencies - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) aircraft	Dec. 31, 2021 USD ($)
Long-term Purchase Commitment [Line Items]
Number of aircraft on order with manufacturers	451
Purchase obligation | $	$ 28,845,065
Minimum aircraft delivery delays that could trigger lessee cancellation clauses	1 year
Non-refundable deposits on aircraft | $	$ 1,626,874	$ 1,508,892
Purchase agreements, termination commencement period	1 year
Boeing Aircraft
Long-term Purchase Commitment [Line Items]
Purchase commitment, number of aircraft	50
B-787-9
Long-term Purchase Commitment [Line Items]
Purchase commitment, number of aircraft converted	3
B-737-Max as a Result of Conversion of B-787
Long-term Purchase Commitment [Line Items]
Purchase commitment, number of aircraft	18
Aircrafts
Long-term Purchase Commitment [Line Items]
Purchase commitment, number of aircraft	451
Purchase commitment, number of aircraft cancelled	5
Non-refundable deposits on aircraft | $	$ 1,600,000	$ 1,500,000