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Goodwill and Acquired Client Relationships (Tables)
3 Months Ended
Mar. 31, 2022
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, 2021$2,689.2 
Foreign currency translation(5.5)
Balance, as of March 31, 2022$2,683.7 
Schedule of Changes in the Components of Acquired Client Relationships
 Acquired Client Relationships (Net)
 Definite-livedIndefinite-livedTotal
 Gross Book
Value
Accumulated
Amortization
Net Book
Value
Net Book
Value
Net Book
Value
Balance, as of December 31, 2021$1,364.2 $(1,028.1)$336.1 $1,630.3 $1,966.4 
Intangible amortization and impairments— (12.3)(12.3)(0.3)(12.6)
Foreign currency translation(2.8)2.3 (0.5)(10.0)(10.5)
Balance, as of March 31, 2022$1,361.4 $(1,038.1)$323.3 $1,620.0 $1,943.3