XML 104 R64.htm IDEA: XBRL DOCUMENT v3.22.2
Summary of significant accounting policies- Others (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Treasury shares      
Number of ordinary shares included in treasury shares account 0 143,363,408  
Statutory reserves      
Percentage of after-tax profit from subsidiaries incorporated in the PRC required to be appropriated to the statutory reserves 10.00%    
Limit of statutory reserve fund as a percentage of registered capital, after which allocations to statutory reserve fund are no longer required 50.00%    
Appropriation to the enterprise expansion fund and staff welfare and bonus fund ¥ 0 ¥ 0 ¥ 0
PRC      
Statutory reserves      
Appropriation to statutory reserves ¥ 2,492 ¥ 1,247 ¥ 1,032
Minimum      
Derivatives and hedging      
Ratio determining effective hedging relationship 80.00%    
Maximum      
Derivatives and hedging      
Ratio determining effective hedging relationship 125.00%