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Goodwill and Acquired Client Relationships (Tables)
 3 Months Ended
Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Goodwill
The following tables present the changes in the Company’s consolidated Affiliates’ Goodwill and components of Acquired client relationships (net):
Goodwill
Balance, as of December 31, 2022$2,648.7 
Foreign currency translation5.3 
Other(5.1)
Balance, as of March 31, 2023$2,648.9 
Schedule of Changes in the Components of Acquired Client Relationships
 Acquired Client Relationships (Net)
 Definite-livedIndefinite-livedTotal
 Gross Book ValueAccumulated AmortizationNet Book ValueNet Book ValueNet Book Value
Balance, as of December 31, 2022$1,355.1 $(1,069.7)$285.4 $1,590.6 $1,876.0 
Intangible amortization and impairments— (12.5)(12.5)— (12.5)
Foreign currency translation0.2 — 0.2 6.5 6.7 
Transfers(1)
(10.3)10.3 — (4.1)(4.1)
Balance, as of March 31, 2023$1,345.0 $(1,071.9)$273.1 $1,593.0 $1,866.1 
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(1)Transfers include acquired client relationships at Affiliates that were deconsolidated during the period.