LEASES - Supplemental cash flow information related to leases (Details) - CNY (¥) ¥ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Supplemental disclosure of cash flow information: | ||
| Cash paid for amounts included in the measurement of operating lease liabilities | ¥ 4,057 | ¥ 4,212 |
| Cash paid for amounts included in the measurement of finance lease liabilities | 139 | 109 |
| Non-cash right-of-use assets obtained in exchange for operating lease liabilities | 1,176 | 2,076 |
| Non-cash right-of-use assets obtained in exchange for finance lease liabilities, net of reassessment of finance lease payments | ¥ 0 | ¥ 78 |