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Commitments and Contingencies - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2023
USD ($)
aircraft
Mar. 31, 2022
USD ($)
Dec. 31, 2023
aircraft
Dec. 31, 2022
Aug. 07, 2022
aircraft
hangar
Other Commitments [Line Items]          
Right-of-use asset obtained in exchange for operating lease liability | $ $ 0.4 $ 2.9      
Operating lease, weighted average discount rate, percent 3.40%     3.20%  
Operating lease, weighted average remaining lease, term (in years) 4 years 2 months 12 days     4 years 3 months 18 days  
Operating lease, payments | $ $ 6.6 $ 5.2      
Contractual obligation | $ 583.9        
Contractual obligation, to be paid, year one | $ $ 200.5        
Number of aircrafts         3
Number of aircraft hangars | hangar         1
Property Leases | Minimum          
Other Commitments [Line Items]          
Lessee, operating lease, term of contract 1 month        
Property Leases | Maximum          
Other Commitments [Line Items]          
Lessee, operating lease, term of contract 9 years        
Equipment Leases | Minimum          
Other Commitments [Line Items]          
Lessee, operating lease, term of contract 1 month        
Equipment Leases | Maximum          
Other Commitments [Line Items]          
Lessee, operating lease, term of contract 5 years        
Aircraft Provided By Customers          
Other Commitments [Line Items]          
Lessee, number of leased aircraft 13        
Aircraft Leased From External Customers          
Other Commitments [Line Items]          
Lessee, number of leased aircraft 4        
Operating          
Other Commitments [Line Items]          
Number of aircrafts         1
Inoperative          
Other Commitments [Line Items]          
Number of aircrafts         2
B-767-300          
Other Commitments [Line Items]          
Number of owned aircrafts     18    
Number of aircrafts to be purchased     12    
A-321-200          
Other Commitments [Line Items]          
Number of owned aircrafts     9    
A-330-200          
Other Commitments [Line Items]          
Number of aircrafts to be purchased     5