v3.26.3
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Impairment of long-lived assets (Details) - CNY (¥)
¥ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES    
Long-lived asset impairment loss ¥ 49 ¥ 38
Impairment Long Lived Asset Held For Use Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag true