Name:	beke_OperatingLeaseCostRelatedParties
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Present value of lessee's discounted obligation for lease payments from operating lease arrangements with related parties, classified as current.

No definition available.

Name:	beke_OperatingLeaseLiabilityCurrentRelatedParties
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Present value of lessee's discounted obligation for lease payments from operating lease arrangements with related parties, classified as noncurrent.

No definition available.

Name:	beke_OperatingLeaseLiabilityNoncurrentRelatedParties
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Present value of lessee's discounted obligation for lease payments from operating lease arrangements with related parties.

No definition available.

Name:	beke_OperatingLeaseLiabilityRelatedParties
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's right to use underlying asset under operating lease arrangements with related parties.

No definition available.

Name:	beke_OperatingLeaseRightOfUseAssetsRelatedParties
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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.

No definition available.

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

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=beke_YuanjingMingdeManagementConsultingCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionAxis=beke_StoreMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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