v3.26.3
Variable Interest Entities and Consolidated Investment Products - Assets, Liabilities and Equity of the Fund (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Liabilities      
Redeemable noncontrolling interests $ 100,440 $ 304,263  
Variable Interest Entity, Primary Beneficiary      
ASSETS      
Cash and cash equivalents 25,631 41,060 $ 42,025
Investments 182,245 410,236  
Liabilities      
Investment liabilities, at fair value 7,413 813  
Net CIP assets included in the table above 181,142 434,705  
Net CIP assets (liabilities) not included in the table above 20,806 12,515  
Total Net CIP assets 201,948 447,220  
Artisan’s direct equity investment in CIPs 101,508 142,957  
Variable Interest Entity, Primary Beneficiary | Money market funds | Fair Value, Measurements, Recurring      
ASSETS      
Cash and cash equivalents 6,310 25,282  
Variable Interest Entity, Primary Beneficiary | Money market funds | Fair Value, Measurements, Recurring | Level 1      
ASSETS      
Cash and cash equivalents 6,310 25,282  
Variable Interest Entity, Primary Beneficiary | Money market funds | Fair Value, Measurements, Recurring | Level 2      
ASSETS      
Cash and cash equivalents 0 0  
Variable Interest Entity, Primary Beneficiary | Money market funds | Fair Value, Measurements, Recurring | Level 3      
ASSETS      
Cash and cash equivalents 0 0  
Variable Interest Entity, Primary Beneficiary | Equity securities - long position | Fair Value, Measurements, Recurring      
ASSETS      
Investments 44,793 151,994  
Liabilities      
Investment liabilities, at fair value 4,299    
Variable Interest Entity, Primary Beneficiary | Equity securities - long position | Fair Value, Measurements, Recurring | Level 1      
ASSETS      
Investments 44,667 151,994  
Liabilities      
Investment liabilities, at fair value 4,299    
Variable Interest Entity, Primary Beneficiary | Equity securities - long position | Fair Value, Measurements, Recurring | Level 2      
ASSETS      
Investments 126 0  
Liabilities      
Investment liabilities, at fair value 0    
Variable Interest Entity, Primary Beneficiary | Equity securities - long position | Fair Value, Measurements, Recurring | Level 3      
ASSETS      
Investments 0 0  
Liabilities      
Investment liabilities, at fair value 0    
Variable Interest Entity, Primary Beneficiary | Fixed income instruments - long position | Fair Value, Measurements, Recurring      
ASSETS      
Investments 134,390 255,610  
Variable Interest Entity, Primary Beneficiary | Fixed income instruments - long position | Fair Value, Measurements, Recurring | Level 1      
ASSETS      
Investments 0 0  
Variable Interest Entity, Primary Beneficiary | Fixed income instruments - long position | Fair Value, Measurements, Recurring | Level 2      
ASSETS      
Investments 126,868 245,974  
Variable Interest Entity, Primary Beneficiary | Fixed income instruments - long position | Fair Value, Measurements, Recurring | Level 3      
ASSETS      
Investments 7,522 9,636  
Variable Interest Entity, Primary Beneficiary | Derivative assets | Fair Value, Measurements, Recurring      
ASSETS      
Investments 3,062 2,632  
Liabilities      
Investment liabilities, at fair value 3,114 813  
Variable Interest Entity, Primary Beneficiary | Derivative assets | Fair Value, Measurements, Recurring | Level 1      
ASSETS      
Investments 235 203  
Liabilities      
Investment liabilities, at fair value 0 2  
Variable Interest Entity, Primary Beneficiary | Derivative assets | Fair Value, Measurements, Recurring | Level 2      
ASSETS      
Investments 2,827 2,429  
Liabilities      
Investment liabilities, at fair value 3,114 811  
Variable Interest Entity, Primary Beneficiary | Derivative assets | Fair Value, Measurements, Recurring | Level 3      
ASSETS      
Investments 0 0  
Liabilities      
Investment liabilities, at fair value $ 0 $ 0