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Document and Entity Information Document - USD ($)
$ / shares in Units, $ in Billions
 12 Months Ended
Dec. 31, 2021
Feb. 18, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-35826    
Entity Registrant Name Artisan Partners Asset Management Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 45-0969585    
Entity Address, Address Line One 875 E. Wisconsin Avenue    
Entity Address, Address Line Two Suite 800    
Entity Address, City or Town Milwaukee    
Entity Address, State or Province WI    
Entity Address, Postal Zip Code 53202    
City Area Code 414    
Local Phone Number 390-6100    
Title of 12(b) Security Class A Common Stock, $0.01 par value    
Trading Symbol APAM    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Central Index Key 0001517302    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
ICFR Auditor Attestation Flag true    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Public Float     $ 3.3
Share Price (in dollars per share)     $ 50.82
Auditor Name PricewaterhouseCoopers LLP    
Auditor Location Chicago, Illinois    
Auditor Firm ID 238    
Document Type 10-K    
Class A Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   66,515,087  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   3,206,580  
Class C Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   9,128,617