v3.26.1
General information and organization - Summary of Condensed Separate Financial Statements (Details) - CNY (¥)
¥ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statements [Line Items]      
Total current assets ¥ 32,458 ¥ 34,544  
Total non-current assets 70,064 55,900  
Total assets 102,522 90,444  
Total current liabilities (14,589) (16,550)  
Total non-current liabilities (4,883) (4,168)  
Total liabilities (19,472) (20,718)  
Total revenues 32,902 28,401 ¥ 27,752
Net loss 11,353 7,109 5,220
Net cash inflow from operating activities 10,231 10,275 7,337
Net cash outflow from investing activities (10,227) (6,818) (1,863)
Net cash (outflow)/inflow/from financing activities (4,649) (3,830) (1,538)
Cash and cash equivalents at beginning of the year 13,164 13,567 9,555
Exchange differences on cash and cash equivalents (49) (30) 76
Cash and cash equivalents at end of the year 8,470 13,164 13,567
VIEs And Subsidiaries Of VIEs [Member]      
Statements [Line Items]      
Total current assets 10,488 11,837  
Total non-current assets 10,679 7,203  
Total assets 21,167 19,040  
Total current liabilities (8,169) (7,023)  
Total non-current liabilities (1,048) (344)  
Total liabilities (9,217) (7,367)  
Total revenues 30,804 27,180 26,770
Net loss (698) (723) (302)
Net cash inflow from operating activities 3,107 406 518
Net cash outflow from investing activities (3,578) (323) (430)
Net cash (outflow)/inflow/from financing activities 1,380 77 (40)
Net increase in cash and cash equivalents 909 160 48
Cash and cash equivalents at beginning of the year 697 538 490
Exchange differences on cash and cash equivalents 0 (1)  
Cash and cash equivalents at end of the year ¥ 1,606 ¥ 697 ¥ 538