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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount of cost for defined contribution plan.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Summary of significant accounting policies- Various (Details) ¥ in Millions	6 Months Ended	12 Months Ended
	Sep. 30, 2021 Segment	Mar. 31, 2023 CNY (¥) Segment	Mar. 31, 2022 CNY (¥) Segment	Mar. 31, 2021 CNY (¥)
Business combinations and noncontrolling interests
Net (loss) income attributable to mezzanine equity holders		¥ 365	¥ 188	¥ 140
Segment reporting
Number of operating segment \| Segment	4	7	7
Number of reportable segment \| Segment	4	7	7
Revenue recognition
Practical expedient, unsatisfied performance obligations		true
Practical expedient, financing component		true
Sales and marketing expenses
Advertising and promotional expenses		¥ 76,818	¥ 91,103	57,073
Other employee benefits
Contribution amount charged to the consolidated income statements		13,953	13,086	8,223
Government grants
Government grants recored as specific costs and expenses		5,889	6,028	4,532
Government grants recorded as other income		1,857	1,661	¥ 1,589
Government grants recorded as other liabilities		1,687	1,071
Accounts receivable
Allowance for doubtful accounts		¥ 6,174	¥ 4,912
Minimum
Equity securities and other investments
Treasury investment original maturity term		1 year
Treasury investment remaining maturity term		1 year
Maximum
Equity securities and other investments
Treasury investment remaining maturity term		3 years