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Revenue (Tables)
12 Months Ended
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The geographic disaggregation of management fee revenue for the years ended December 31 (in millions) is presented below:
202420232022
Quant & Solutions
U.S.$327.5 $281.9 $279.1 
Non-U.S.103.6 91.3 88.3 
Management fee revenue $431.1 $373.2 $367.4