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GOODWILL AND INTANGIBLE ASSETS (Tables)
 6 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill and Intangible Assets
Goodwill and intangible assets consist of the following:

(in millions)6/30/202412/31/2023
Goodwill$2,642.8 $2,642.8 
Indefinite-lived intangible assets - trade name104.8 117.1 
Indefinite-lived intangible assets - investment advisory agreements65.6 65.6 
Definite-lived intangible assets - investment advisory agreements271.9 324.6 
Total$3,085.1 $3,150.1 
Schedule of Definite-Lived Intangible Assets, Future Amortization Expense Estimated amortization expense for the definite-lived intangible assets for the five succeeding years is a follows:
(in millions)
Remaining 2024
$42.8 
202582.2 
202665.2 
202745.3 
202814.3