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Leases - Narrative (Details)
 12 Months Ended
Dec. 31, 2022
aircraft
Lessee, Lease, Description [Line Items]  
Aircraft leases, minimum remaining lease term 7 months
Aircraft leases, maximum remaining lease term 6 years
Facility leases, minimum lease term remaining 1 month
Facility leases, maximum lease term remaining 16 years
Minimum  
Lessee, Lease, Description [Line Items]  
Renewal lease term 1 year
Maximum  
Lessee, Lease, Description [Line Items]  
Renewal lease term 2 years
Aircraft  
Lessee, Lease, Description [Line Items]  
Number of aircraft operated 290
Number of aircraft accounted for under operating leases 62
Finance lease, number of aircraft leases 0
Number of aircraft variable rate rent 0
Number of aircraft having purchase options 30