XML 46 R39.htm IDEA: XBRL DOCUMENT
v3.19.3

Summary of Significant Accounting Policies Other Information (Details) | Sep. 30, 2019
--- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Variable Interest Entity Consolidation Threshold | 10.00%
Artisan Global Funds |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Number of Consolidated Variable Interest Entities | 3
Artisan Private Funds |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Number of Consolidated Variable Interest Entities | 1

X
- Definition Number of Consolidated Variable Interest Entities + References No definition available. + Details
Name: | apam_NumberofConsolidatedVariableInterestEntities
Namespace Prefix: | apam_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Variable Interest Entity Consolidation Threshold + References No definition available. + Details
Name: | apam_VariableInterestEntityConsolidationThreshold
Namespace Prefix: | apam_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=apam_ArtisanGlobalFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=apam_ArtisanPrivateFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |