Commitments and Contingencies (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($) aircraft	Jun. 30, 2020 USD ($) aircraft item	Dec. 31, 2019 USD ($)
Commitments to acquire aircraft
Minimum aircraft delivery delays that could trigger lessee cancellation clauses (in years)		1 year
Commitments for the acquisition of the aircraft and other equipment
2020 | $	$ 2,025,283	$ 2,025,283
2021 | $	4,564,159	4,564,159
2022 | $	5,712,095	5,712,095
2023 | $	6,534,093	6,534,093
2024 | $	4,508,101	4,508,101
Thereafter | $	2,840,517	2,840,517
Total | $	26,184,248	$ 26,184,248
Aircrafts
Commitments to acquire aircraft
2020		27
2021		59
2022		67
2023		100
2024		80
Thereafter		60
Total		393
Commitments for the acquisition of the aircraft and other equipment
Deposit Assets | $	$ 1,800,000	$ 1,800,000	$ 1,600,000
Airbus A220-300
Commitments to acquire aircraft
2022		3
2023		14
2024		11
Thereafter		22
Total		50
Number of purchase agreement options | item		25
Airbus A320/321neo
Commitments to acquire aircraft
2020		14
2021		22
2022		23
2023		25
2024		32
Thereafter		37
Total		153
Number of long-range variants | item		47
Number of extra long-range variants | item		29
Airbus A330-900neo
Commitments to acquire aircraft
2021		3
2022		7
2023		5
Total		15
Airbus A350-900/1000
Commitments to acquire aircraft
2020		3
2021		4
2022		3
2023		4
2024		5
Thereafter		1
Total		20
Boeing 737-7/8/9 MAX
Commitments to acquire aircraft
2020		2
2021		24
2022		23
2023		42
2024		30
Total		121
Boeing 787-9/10
Commitments to acquire aircraft
2020		8
2021		6
2022		8
2023		10
2024		2
Total		34
Boeing 737-8/9 MAX
Commitments to acquire aircraft
Long Term Purchase Commitment Quantity Required Aircraft Canceled	5