INVENTORIES - Summary of Loss Due to Reduction in Market Value (Details) - Aircraft - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure Of Loss Due To Reduction In Market Value [Line Items] | |||
| Beginning balance | $ (0.9) | $ (1.4) | $ (5.7) |
| Additions | (3.0) | 0.0 | (0.6) |
| Disposals | 0.0 | 0.1 | 0.0 |
| Reversals | 3.1 | 0.4 | 4.9 |
| Ending balance | $ (0.8) | $ (0.9) | $ (1.4) |