| Cover | Jul. 28, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 28, 2021 |
| Entity Registrant Name | Artisan Partners Asset Management Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35826 |
| Entity Tax Identification Number | 45-0969585 |
| Entity Address, Address Line One | 875 E. Wisconsin Avenue, 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, par value $0.01 per share |
| Trading Symbol | APAM |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001517302 |
