Summary of significant accounting policies- Others (Details) - CNY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| 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 | ||
| PRC | |||
| Statutory reserves | |||
| Appropriation to statutory reserves | ¥ 3,138 | ¥ 2,492 | ¥ 1,247 |
| Minimum | |||
| Derivatives and hedging | |||
| Ratio determining effective hedging relationship | 80.00% | ||
| Maximum | |||
| Derivatives and hedging | |||
| Ratio determining effective hedging relationship | 125.00% | ||