Leases, Commitments, Guarantees and Contingencies - Operating Leases (Details) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
|
Mar. 31, 2026
USD ($)
aircraft
|
Dec. 31, 2024 |
|
| Lessee, Lease, Description [Line Items] | ||
| Lease term | 5 years | |
| Purchase obligation | $ | $ 2,240,083 | |
| Minimum | ||
| Lessee, Lease, Description [Line Items] | ||
| Purchase obligation | $ | 20,000 | |
| Maximum | ||
| Lessee, Lease, Description [Line Items] | ||
| Purchase obligation | $ | $ 25,000 | |
| E175 | ||
| Lessee, Lease, Description [Line Items] | ||
| Number of aircraft under purchase agreement | 68 | |
| Number of additional aircraft with secured delivery positions | 44 | |
| United | E175 | ||
| Lessee, Lease, Description [Line Items] | ||
| Number of aircraft to be purchased and placed into service | 8 | |
| Delta | E175 | ||
| Lessee, Lease, Description [Line Items] | ||
| Number of aircraft to be purchased and placed into service | 16 |