XML 76 R63.htm IDEA: XBRL DOCUMENT v3.21.2
Goodwill and Acquired Client Relationships - Schedule of Changes in the Components of Acquired Client Relationships (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Total          
Beginning balance, net book value       $ 1,048,800,000  
Intangible amortization and impairments $ (8,900,000) $ (31,900,000)   (25,300,000) $ (133,400,000)
Ending balance, net book value 1,018,200,000     1,018,200,000  
Acquired Client Relationships          
Definite-lived          
Beginning balance, gross book value       1,166,600,000  
Beginning balance, accumulated amortization       (1,026,800,000)  
Beginning balance, net book value       139,800,000  
Intangible amortization and impairments       (25,300,000)  
Foreign currency translation, gross       (200,000)  
Foreign currency translation, accumulated amortization       100,000  
Foreign currency translation, net       (100,000)  
Ending balance, gross book value 1,166,400,000     1,166,400,000  
Ending balance, accumulated amortization (1,052,000,000)     (1,052,000,000)  
Ending balance, net book value 114,400,000     114,400,000  
Indefinite-lived          
Beginning balance, net book value   $ 0   909,000,000.0  
Intangible impairments     $ (60,300,000) 0  
Foreign currency translation       (5,200,000)  
Ending balance, net book value 903,800,000   $ 0 903,800,000  
Total          
Beginning balance, net book value       1,048,800,000  
Intangible amortization and impairments       (25,300,000)  
Foreign currency translation       (5,300,000)  
Ending balance, net book value $ 1,018,200,000     $ 1,018,200,000