Summary of significant accounting policies - Schedule of Property, Plant, and Equipment, Lessor Asset under Operating Lease (Details) |
Dec. 31, 2025 |
|---|---|
| Passenger aircraft | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 25 years |
| Residual Value | 15.00% |
| Freighter aircraft | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 35 years |
| Residual Value | 15.00% |
| Helicopters | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 30 years |
| Residual Value | 20.00% |
| Engines | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 20 years |
| Residual Value | 60.00% |