Name:	baba_AggregateOfLiquidityPaymentAndNoteFaceAmount
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of amortization of restructuring reserve applied against earnings during the period.

No definition available.

Name:	baba_AmortizationOfRestructuringReserve
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

Name:	baba_CommercialAgreementAbstract
Namespace Prefix:	baba_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Money received or receivable on escrow services in connection with the provision of online and mobile commerce related services, recorded as corresponding current liabilities.

No definition available.

Name:	baba_EscrowMoneyPayableCurrent
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Expected term of the restructured arrangement entered with related party.

No definition available.

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

Face amount of the Promissory Note owed by related party to entity, which is deductible in the calculation of Liquidity Payment owed to entity upon the occurrence of a Liquidity Event.

No definition available.

Name:	baba_FaceValueOfPromissoryNoteDeductibleInCalculationOfLiquidityPayment
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The percentage of the average daily book balance of the micro loans that will be paid by related party to entity as an annual fee.

No definition available.

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

Specified percentage of related party's pre-tax income that, in addition to the costs incurred by entity in providing the services, must be paid to the entity as a fee.

No definition available.

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

Specified percentage, after any downward adjustments, of related party's pre-tax income that, in addition to the costs incurred by entity in providing the services, must be paid to the entity as a fee.

No definition available.

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

The threshold amount of proceeds from IPO of related party above which, subject to other conditions, the entity may elect to receive a one-time payment from related party.

No definition available.

Name:	baba_GrossProceedsOfRelatedPartyIPOThreshold
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The threshold value of related party in the event of an IPO above which, subject to other conditions, the entity may elect to receive a one-time payment from related party.

No definition available.

Name:	baba_ImpliedEquityValueOfRelatedPartyUponIPOThreshold
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The recorded increase in value attributable to the agreement (representing the fair value of the restructured arrangement in excess of the fair value of the pre-existing arrangement), which is considered to be an equity contribution by the related party to the entity.

No definition available.

Name:	baba_IncreaseInFairValueEquityContributionByRelatedParty
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Increase in the Liquidity Payment amount from related party due to cancellation of note receivable.

No definition available.

Name:	baba_IncreaseInLiquidityPaymentDueToCancellationOfPromissoryNote
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Initial term of agreement relating to expense in connection with fees paid to related party.

No definition available.

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

- References

No definition available.

Name:	baba_IntellectualPropertyLicenseAndSoftwareTechnologyServicesAgreementAbstract
Namespace Prefix:	baba_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The number of members serving on the board of directors of the entity.

No definition available.

Name:	baba_NumberOfDirectorsOfEntity
Namespace Prefix:	baba_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of payments that the entity may elect to receive, subject to other conditions, from related party for specified percentage of related party's equity value.

No definition available.

Name:	baba_NumberOfPaymentsThatCompanyMayElectToReceiveFromRelatedParty
Namespace Prefix:	baba_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of payments that may be payable to Company by related party to compensate for the impact of modifications to the arrangement required by regulatory authorities.

No definition available.

Name:	baba_NumberOfPaymentsThatMayBePayableToCompanyToCompensateForChanges
Namespace Prefix:	baba_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of shares in the entity contributed by related party that serve as security for promissory note.

No definition available.

Name:	baba_NumberOfSharesAsSecurityForPromissoryNote
Namespace Prefix:	baba_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The percentage of the equity value of former subsidiary used to calculate the Liquidity Payment the related party will make to entity upon the occurrence of a Liquidity Event.

No definition available.

Name:	baba_PercentageOfEquityValueOfFormerSubsidiary
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of the equity value of Small and Micro Financial Services Company that entity may elect to receive as a one-time payment, subject to other conditions.

No definition available.

Name:	baba_PercentageOfEquityValueOfRelatedPartyOneTimePayment
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of the equity value of related party, up to which the entity will continue to purchase newly issued equity interests in related party.

No definition available.

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

Percentage of securities of former subsidiary that may be transferred, the threshold above which a Liquidity Event is deemed to occur.

No definition available.

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

Percentage of securities of former subsidiary that may be transferred as the Liquidity Event payment, the threshold above which the specified floor amount applies to Liquidity Payment.

No definition available.

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

The threshold percentage of entity's ownership of related party, below which, subject to other conditions, the entity may elect to receive a one-time payment from related party.

No definition available.

Name:	baba_PercentageOwnershipOfRelatedPartyThreshold
Namespace Prefix:	baba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Proceeds received from related party.

No definition available.

Name:	baba_ProceedsFromRelatedParty
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Period of time between issuance and maturity of promissory note from related party.

No definition available.

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

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Also includes money received or receivable on escrow services in connection with the provision of online and mobile commerce related services.

No definition available.

Name:	baba_RestrictedCashAndCashEquivalentsAtCarryingValueAndEscrowReceivables
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	baba_RestructuringOfPaymentServicesAbstract
Namespace Prefix:	baba_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The threshold value of former subsidiary that must be met for the entity to demand a Liquidity Event after the tenth anniversary of the agreement.

No definition available.

Name:	baba_ValueOfFormerSubsidiaryLiquidityEventThreshold
Namespace Prefix:	baba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

No definition available.

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Name:	us-gaap_LoansReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-07.1(c))

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 07

-Paragraph b

-Subparagraph 1

-Article 6

Name:	us-gaap_RevenueFromRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729

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

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=baba_TwoDirectorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=baba_AntFinancialServicesAndAlipayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionAxis=baba_RoyaltyFeeAndSoftwareTechnologyServicesFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=baba_AlipayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionAxis=baba_PaymentProcessingFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=baba_AntFinancialServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionAxis=baba_DisposalOfMicroLoanBusinessAndRelatedServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_RelatedPartyTransactionAxis=baba_AnnualFeeUnderSoftwareSystemUseAndServiceAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionAxis=baba_RoyaltyStreamsAndServiceFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_TypeOfArrangementAxis=baba_FrameworkAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=baba_ApnMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_TypeOfArrangementAxis=baba_AmendedFrameworkAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_TypeOfArrangementAxis=baba_ShareAndAssetPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
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