Noncontrolling Interests - Holdings - Share Issuances & Cancellations (Details)	9 Months Ended
Sep. 30, 2025 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(106,125)
Shares paid for tax withholding for share based compensation (in shares)	208,156
Forfeitures of Holdings GP Units from Employee Terminations (in shares)	(12,289)
Artisan Partners Holdings LP
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance	87.00%
Capital Units
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in APAM economic ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%
Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(429,511)
Shares paid for tax withholding for share based compensation (in shares)	187,311
Capital Units
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	80,361,139
Holdings common unit exchanges (in shares)	0
Holdings of common unit exchanges, APAM ownership percentage	0.00%
Change in APAM economic ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%
Shares paid for tax withholding for share based compensation (in shares)	187,311
Forfeitures of Holdings GP Units from Employee Terminations (in shares)	(12,289)
Ending balance (in shares)	80,697,175
Capital Units \| Artisan Partners Holdings LP
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	87.00%
Ending balance	87.00%
Capital Units \| Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(429,511)
Change in APAM economic ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%
Capital Units \| Restricted Stock Units RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(106,125)
Change in APAM economic ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%
Holdings GP Units
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Holdings common unit exchanges (in shares)	(51,500)
Shares issued (in shares)	(106,125)
Shares paid for tax withholding for share based compensation (in shares)	187,311
Forfeitures of Holdings GP Units from Employee Terminations (in shares)	(12,289)
Ending balance (in shares)	70,461,656
Holdings GP Units \| Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(429,511)
Holdings GP Units \| Restricted Stock Units RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	(106,125)
Limited Partnership Units
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	10,287,019
Holdings common unit exchanges (in shares)	(51,500)
Shares paid for tax withholding for share based compensation (in shares)	0
Forfeitures of Holdings GP Units from Employee Terminations (in shares)	0
Ending balance (in shares)	10,235,519
Limited Partnership Units \| Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	0
Limited Partnership Units \| Restricted Stock Units RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)	0

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Noncontrolling Interest, Increase (Decrease) Ownership Interest, Exchange of Units, Percent

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Number of capital units or capital shares outstanding. This element is relevant to issuers of face-amount certificates and registered investment companies.

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

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The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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The number of units or equivalent units outstanding for all classes.

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