SPECIAL CHARGES - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Restructuring and Related Activities [Abstract] | ||||
| Net gains on sale of assets and other special charges | $ 114 | $ (36) | $ 222 | $ (49) |
| Gains on various aircraft sale-leaseback transactions | 151 | 261 | ||
| Special charge | $ 561 | $ 0 | $ 561 | $ 0 |