Name:	baba_FullExemptionIncomeTaxHolidayPeriod
Namespace Prefix:	baba_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The minimum direct ownership percentage in the foreign invested enterprises owned by the foreign investors in Hong Kong, determining whether the lower withholding income tax rate can be applied for dividends distributed by the foreign invested enterprise to its investors in Hong Kong.

No definition available.

Name:	baba_MinimumPercentageDirectlyOwnedByForeignInvestorForLowerWithholdingIncomeTaxRate
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the preferential statutory income tax rate applied to entities with certain qualified enterprise classification/status under the income tax law.

No definition available.

Name:	baba_PreferentialStatutoryIncomeTaxRate
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage reduction in preferential income tax rate during the three years following the full income tax exemption period.

No definition available.

Name:	baba_SpecialIncomeTaxPercentageReductionInPreferentialTaxRate
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the period following the full income tax exemption for which reduced preferential income tax rate is granted under income tax law.

No definition available.

Name:	baba_SpecialIncomeTaxReducedPreferentialTaxRatePeriod
Namespace Prefix:	baba_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the withholding income tax rate imposed under the income law, on dividends declared by PRC companies to its foreign investors.

No definition available.

Name:	baba_WithholdingIncomeTaxRateOnDividendsDeclaredByPRCCompaniesToForeignInvestors
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the lower withholding income tax rate imposed under the income law, on dividends declared by PRC companies to its foreign investors if direct foreign investors with at least 25% equity interest in the PRC company are incorporated in Hong Kong and meet the conditions or requirements pursuant to the tax arrangement between the PRC and Hong Kong.

No definition available.

Name:	baba_WithholdingIncomeTaxRateOnDividendsDeclaredByPRCCompaniesToForeignInvestorsMeetingCertainCriteria
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the withholding tax rate on dividends payment to shareholders.

No definition available.

Name:	baba_WithholdingTaxOnDividendsPayment
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.7)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Name:	us-gaap_CurrentIncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=63044130

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.7)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Name:	us-gaap_DeferredIncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Income Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6515339

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of undistributed earnings of domestic subsidiaries or domestic joint ventures intended to be permanent.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(c)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 3
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28200-109314

Name:	us-gaap_UndistributedEarningsOfDomesticSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementGeographicalAxis=country_KY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementGeographicalAxis=country_HK
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	baba_EntityClassificationsSectorAndEntityAxis=baba_HighAndNewTechnologyEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	baba_EntityClassificationsSectorAndEntityAxis=baba_SoftwareEnterpriseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	baba_EntityClassificationsSectorAndEntityAxis=baba_KeySoftwareEnterpriseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	dei_LegalEntityAxis=baba_AlibabaChinaTechnologyCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	dei_LegalEntityAxis=baba_TaobaoChinaSoftwareCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: