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Share-based awards - Share-based awards relating to Ant Group (Details) ¥ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2022 CNY (¥) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 CNY (¥) | Mar. 31, 2020 CNY (¥)
Share-based awards |  |  |  |
Share-based compensation expense | ¥ 23,971 | $ 3,782 | ¥ 50,120 | ¥ 31,742
Share-based awards with four-year vesting schedule |  |  |  |
Share-based awards |  |  |  |
Vesting period | 4 years | 4 years |  |
Vesting percentage | 25.00% | 25.00% |  |
Share-based awards with four-year vesting schedule and initial vesting at first anniversary |  |  |  |
Share-based awards |  |  |  |
Vesting percentage | 25.00% | 25.00% |  |
Share-based awards with four-year vesting schedule and initial vesting at second anniversary |  |  |  |
Share-based awards |  |  |  |
Vesting percentage | 50.00% | 50.00% |  |
Share-based awards with six-year vesting schedule |  |  |  |
Share-based awards |  |  |  |
Vesting period | 6 years | 6 years |  |
Share-based awards relating to Ant Group |  |  |  |
Share-based awards |  |  |  |
Share-based compensation expense | ¥ (11,585) |  | ¥ 17,315 | ¥ 1,261

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage of vesting of award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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