Summary of significant accounting policies - Basis of presentation (Details)	Mar. 31, 2024 $ / ¥
Convenience translation
Convenience exchange rate (RMB to USD)	7.2203

Represents the exchange rate used for convenience translation from reporting currency to additional disclosures in another currency.

No definition available.

Name:	baba_ForeignCurrencyTranslationRate
Namespace Prefix:	baba_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant