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TAXATION - Valuation allowance (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Deferred Tax Assets, Valuation Allowance
Balance at the beginning of the year	¥ (4,127,927)	¥ (3,385,876)	¥ (3,310,975)
Remeasurement due to application of preferential tax rate	0	(1,839)	(17,011)
Additions	(687,555)	(1,280,549)	(794,643)
Reversals	549,598	282,244	687,180
Write-offs	341,418	258,093	49,573
Balance at the end of the year	¥ (3,924,466)	¥ (4,127,927)	¥ (3,385,876)

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	beke_DeferredTaxAssetsValuationAllowanceRollForward
Namespace Prefix:	beke_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of addition in the valuation allowance for a specified deferred tax asset.

+ References

No definition available.

+ Details

Name:	beke_ValuationAllowanceDeferredTaxAssetAdditionsAmount
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of increase (decrease) in the valuation allowance due to remeasurement due to application of preferential tax rate.

+ References

No definition available.

+ Details

Name:	beke_ValuationAllowanceDeferredTaxAssetRemeasurementDueToApplicationOfPreferentialTaxRate
Namespace Prefix:	beke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of decrease in valuation allowance due to reversal of allowance.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of decrease in valuation allowance due to write-offs.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

+ Details

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