Leases - Finance and Operating Lease Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finance Leases
Remainder of 2023	$ 88
2024	252
2025	154
2026	76
2027	27
2028 and thereafter	0
Total minimum lease payments	597
Less amount representing interest	34
Present value of minimum lease payments	563
Less current portion	283
Long-term portion	280
Operating Leases
Less current portion	210,994	$ 188,296
Long-term portion	3,108,399	$ 2,455,619
Total Operating and Finance Lease Obligations
Remainder of 2023	106,822
2024	417,347
2025	399,879
2026	373,339
2027	356,753
2028 and thereafter	3,713,305
Total minimum lease payments	5,367,445
Less amount representing interest	2,047,489
Present value of minimum lease payments	3,319,956
Less current portion	211,277
Long-term portion	$ 3,108,679
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt and Lease Obligation, Including Current Maturities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current maturities of long-term debt, net, and finance leases
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, net and finance leases, less current maturities
Aircraft and Spare Engine Leases
Operating Leases
Remainder of 2023	$ 104,765
2024	410,295
2025	395,582
2026	369,269
2027	353,560
2028 and thereafter	3,568,211
Total minimum lease payments	5,201,682
Less amount representing interest	1,913,165
Present value of minimum lease payments	3,288,517
Less current portion	205,497
Long-term portion	3,083,020
Property Facility Leases
Operating Leases
Remainder of 2023	1,792
2024	6,624
2025	4,143
2026	3,994
2027	3,166
2028 and thereafter	145,094
Total minimum lease payments	164,813
Less amount representing interest	134,284
Present value of minimum lease payments	30,529
Less current portion	5,150
Long-term portion	25,379
Other
Operating Leases
Remainder of 2023	177
2024	176
2025	0
2026	0
2027	0
2028 and thereafter	0
Total minimum lease payments	353
Less amount representing interest	6
Present value of minimum lease payments	347
Less current portion	347
Long-term portion	$ 0

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