v3.25.1
Summary of significant accounting policies (Details)
¥ in Millions
12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Foreign currency translation      
Debt Instrument, Face Amount ¥ 8,300    
Convenience translation      
Convenience translation rate (RMB to USD) 7.2993    
Loan receivables, net      
Provision for the doubtful loan receivables ¥ 0 ¥ 0 ¥ 0
Minimum      
Loan receivables, net      
Loan periods extended range 1 month    
Maximum      
Loan receivables, net      
Loan periods extended range 24 months    
Electronic equipment | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 3 years    
Electronic equipment | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 5 years    
Office equipment      
Property, equipment and software, net      
Estimated useful Lives (in Years) 5 years    
Vehicles | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 3 years    
Vehicles | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 6 years    
Logistic,warehouse and other heavy equipment | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 5 years    
Logistic,warehouse and other heavy equipment | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 10 years    
Leasehold improvement      
Property, equipment and software, net      
Estimated useful Lives Over the shorter of the expected life of leasehold improvements or the lease term    
Software | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 3 years    
Software | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 5 years    
Building | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 30 years    
Building | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 40 years    
Building improvement | Minimum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 5 years    
Building improvement | Maximum      
Property, equipment and software, net      
Estimated useful Lives (in Years) 10 years    
Land      
Property, equipment and software, net      
Estimated useful Lives Indefinite    
Other non-current assets      
Loan receivables, net      
The loan receivables with the collection period over one year ¥ 373 251  
Prepayments and other current assets      
Loan receivables, net      
The loan receivables with the collection period less than one year ¥ 1,279 ¥ 1,711