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Intangible assets, net - General (Details)
¥ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2023
CNY (¥)
Mar. 31, 2022
CNY (¥)
Mar. 31, 2021
CNY (¥)
Mar. 31, 2023
USD ($)
Intangible assets, net        
Gross carrying amount ¥ 115,624 ¥ 116,929    
Less: accumulated amortization and impairment (68,711) (57,698)    
Net book value 46,913 59,231   $ 6,831
Intangible assets acquired 285 1,000 ¥ 20,750  
User base and customer relationships        
Intangible assets, net        
Gross carrying amount 48,155 47,941    
Trade names, trademarks and domain names        
Intangible assets, net        
Gross carrying amount 39,301 39,080    
Non-compete agreements        
Intangible assets, net        
Gross carrying amount 12,636 14,436    
Developed technology and patents        
Intangible assets, net        
Gross carrying amount 6,639 7,088    
Licenses copyrights and others        
Intangible assets, net        
Gross carrying amount ¥ 8,893 ¥ 8,384