| Document and Entity Information | Feb. 24, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001517302 |
| Document Type | 8-K |
| Document Period End Date | Feb. 24, 2020 |
| Entity Registrant Name | Artisan Partners Asset Management Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35826 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A common stock, par value $0.01 per share |
| Trading Symbol | APAM |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
