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Noncontrolling interest - Holdings (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax		$ 0
Net impact to financial condition			$ 0	$ 0
Additional paid-in capital
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ (2,089)	(1,737)	(1,568)	(1,828)
Non-controlling interests - Artisan Partners Holdings
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	2,118	1,753	1,717	1,869
Non-controlling interests - Artisan Partners Holdings | Deferred Tax Assets [Member]
Noncontrolling Interest [Line Items]
Net impact to financial condition			(2,000)	(600)
Accumulated other comprehensive income (loss)
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ (29)	$ (16)	$ (149)	$ (41)
Common Stock
Noncontrolling Interest [Line Items]
Stock Repurchased and Retired During Period, Shares			0

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