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Income Taxes - Movements of Valuation Allowance of Deferred Tax Assets (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)
Movements of valuation allowance of deferred tax assets
Balance at beginning of the year		¥ 271,813	¥ 60,628	¥ 56,653
Provided		94,856	20,275	24,196
Addition due to acquisition		193,826	193,826
Write off		(9,472)	(2,916)	(20,221)
Reverse		(23,730)
Balance at ending of the year	$ 48,347	¥ 333,467	¥ 271,813	¥ 60,628

X

- Definition

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

+ References

No definition available.

+ Details

Name:	noah_DeferredTaxAssetsValuationAllowanceAdditionDueToAssetAcquisition
Namespace Prefix:	noah_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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:	noah_DeferredTaxAssetsValuationAllowanceRollForward
Namespace Prefix:	noah_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

It represents amount of addition in the valuation allowance for a specified deferred tax asset.

+ References

No definition available.

+ Details

Name:	noah_ValuationAllowanceDeferredTaxAssetAdditionsAmount
Namespace Prefix:	noah_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of decrease from reversal in the valuation allowance from a specified deferred tax asset.

+ References

No definition available.

+ Details

Name:	noah_ValuationAllowanceDeferredTaxAssetReverseAmount
Namespace Prefix:	noah_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

It represents amount of write off in the valuation allowance for a specified deferred tax asset.

+ References

No definition available.

+ Details

Name:	noah_ValuationAllowanceDeferredTaxAssetWriteOffAmount
Namespace Prefix:	noah_
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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

+ Details

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