SHARE-BASED COMPENSATION - Recognized share-based compensation expenses (Details) - CNY (¥) ¥ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Share-based compensation | ||
| Recognized share-based compensation expenses | ¥ 247 | ¥ 170 |
| Hotel operating costs | ||
| Share-based compensation | ||
| Recognized share-based compensation expenses | 16 | 15 |
| Selling and marketing expenses | ||
| Share-based compensation | ||
| Recognized share-based compensation expenses | 4 | 3 |
| General and administrative expenses | ||
| Share-based compensation | ||
| Recognized share-based compensation expenses | ¥ 227 | ¥ 152 |