Leases, Commitments, Guarantees and Contingencies (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) aircraft	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 192,709		$ 192,709		$ 238,516
Current maturities of lease liabilities	74,141		74,141		78,886
Noncurrent operating leases	$ 117,823		117,823		$ 158,274
Operating leases			$ 56,900
Weighted-average remaining lease term for operating leases	6 years 4 months 24 days		6 years 4 months 24 days
Weighted-average discount rate for operating leases	6.00%		6.00%
Lease costs
Operating lease cost	$ 21,697	$ 23,370	$ 65,360	$ 67,582
Variable and short-term lease cost	765	976	2,588	3,256
Sublease income	(1,845)	(1,888)	(5,492)	(4,717)
Total lease cost	$ 20,617	$ 22,458	$ 62,456	$ 66,121
Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft acquired | aircraft			43
Aircraft | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	2 years		2 years
Aircraft | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	8 years		8 years
Airport Facilities | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 month		1 month
Airport Facilities | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	34 years		34 years