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Leases, Commitments, Guarantees and Contingencies - Commitments and Obligations (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Operating lease payments for aircraft and facility obligations    
Apr - Dec 2023 $ 14,586  
2024 22,180  
2025 16,517  
2026 13,436  
2027 12,293  
Thereafter 54,321  
Total 133,333  
Firm aircraft and spare engine commitments    
Apr - Dec 2023 53,170  
2024 59,396  
2025 27,771  
Total 140,337  
Interest commitments    
Apr - Dec 2023 95,916  
2024 113,943  
2025 93,846  
2026 74,283  
2027 52,660  
Thereafter 106,472  
Total 537,120  
Principal maturities on long-term debt    
Apr - Dec 2023 338,821  
2024 446,277  
2025 530,357  
2026 507,226  
2027 460,455  
Thereafter 1,043,629  
Total 3,326,765 $ 3,409,311
Total commitments and obligations    
Apr - Dec 2023 502,493  
2024 641,796  
2025 668,491  
2026 594,945  
2027 525,408  
Thereafter 1,204,422  
Total $ 4,137,555