v3.25.2
Commitments, Contingencies and Other Contractual Arrangements - Aircraft-Related Commitments and Financing Arrangements and Other Commitments (Details)
2 Months Ended 3 Months Ended 4 Months Ended
Mar. 12, 2025
USD ($)
Jun. 30, 2025
USD ($)
aircraftEngine
aircraft
Jun. 30, 2025
USD ($)
aircraftEngine
aircraft
Mar. 13, 2025
aircraftEngine
Unrecorded Unconditional Purchase Obligation [Line Items]        
Number of delivered aircraft with secured debt financing commitments | aircraft   67 67  
Aircraft-Related Secured Debt        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Interest commitments, remainder of fiscal year   $ 44,100,000 $ 44,100,000  
Interest commitments, 2026   80,300,000 80,300,000  
Interest commitments, 2027   69,000,000.0 69,000,000.0  
Interest commitments, 2028   50,100,000 50,100,000  
Interest commitments, 2029   35,300,000 35,300,000  
Interest commitments, 2030 and thereafter   106,600,000 106,600,000  
Unsecured term loans        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Interest commitments, remainder of fiscal year   1,700,000 1,700,000  
Interest commitments, 2026   3,400,000 3,400,000  
Interest commitments, 2027   3,400,000 3,400,000  
Interest commitments, 2028   3,400,000 3,400,000  
Interest commitments, 2029   3,400,000 3,400,000  
Interest commitments, 2030 and thereafter   3,700,000 3,700,000  
Exit secured notes        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Interest commitments, remainder of fiscal year   34,500,000 34,500,000  
Interest commitments, 2026   70,500,000 70,500,000  
Interest commitments, 2027   73,300,000 73,300,000  
Interest commitments, 2028   76,300,000 76,300,000  
Interest commitments, 2029   79,400,000 79,400,000  
Interest commitments, 2030 and thereafter   24,200,000 24,200,000  
Aircraft and Related Flight Equipment        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Committed expenditures, remainder of fiscal year   18,000,000.0 18,000,000.0  
Committed expenditures, 2026   12,300,000 12,300,000  
Committed expenditures, 2027   183,000,000.0 183,000,000.0  
Committed expenditures, 2028   297,800,000 297,800,000  
Committed expenditures, 2029   1,124,300,000 1,124,300,000  
Committed expenditures, 2030 and thereafter   1,857,800,000 1,857,800,000  
Non-aircraft Related Commitments        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Committed expenditures, remainder of fiscal year   26,600,000 26,600,000  
Committed expenditures, 2026   40,400,000 40,400,000  
Committed expenditures, 2027   33,100,000 33,100,000  
Committed expenditures, 2028   7,100,000 7,100,000  
Committed expenditures, 2029   1,900,000 1,900,000  
Committed expenditures, 2030 and thereafter   3,700,000 3,700,000  
PW1100 GTF Engine        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Vendor consideration credit, expense offset, total amount received   72,400,000 72,400,000  
Vendor consideration credit, expense offset, asset basis reduction   38,100,000    
Vendor consideration credit, depreciation and amortization, asset basis reduction $ 6,100,000 6,000,000 7,200,000  
PW1100 GTF Engine | Aircraft Maintenance, Materials, and Repairs        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Vendor consideration credit, expense offset   14,300,000    
Airbus        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Future aircraft to be received | aircraftEngine       27
Third Party Lessor | A320 and A321        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Aircraft rent commitments, remainder of fiscal year   0 0  
Aircraft rent commitments, 2026   0 0  
Aircraft rent commitments, 2027   63,500,000 63,500,000  
Aircraft rent commitments, 2028   162,300,000 162,300,000  
Aircraft rent commitments, 2029   210,300,000 210,300,000  
Aircraft rent commitments, 2030 and beyond   $ 2,087,300,000 $ 2,087,300,000  
2029 Through 2031 | Airbus        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Future aircraft to be received | aircraft   52 52  
2024 Through 2031 | PurePower PW1100G-JM Engine        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Number of spare aircraft engines ordered | aircraftEngine   16 16  
2024 Through 2031 | Airbus        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Number of aircraft without secured financing commitments scheduled for delivery | aircraft   52 52  
2027 Through 2028 | Third Party Lessor | A320 and A321        
Unrecorded Unconditional Purchase Obligation [Line Items]        
Future aircraft to be received | aircraft   36 36