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Nature of Business and Organization (Details)	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
APAM economic interest in Artisan Partners Holdings LP (as a percent)	72.00%
Ownership interest	100.00%

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- Definition

Subsidiary, Ownership Percentage - Artisan Partners Limited Partnership

+ References

No definition available.

+ Details

Name:	apam_SubsidiaryOwnershipPercentageArtisanPartnersLimitedPartnership
Namespace Prefix:	apam_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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