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v3.23.1

Goodwill and Acquired Client Relationships - Schedule of Changes in the Components of Acquired Client Relationships (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Intangible Assets |  |
Impairment Of Intangible Asset Indefinite Lived Excluding Goodwill, Statement Of Income Or Comprehensive Income, Extensible Enumeration, Not Disclosed Flag | Indefinite-lived |
Total |  |
Beginning balance, net book value | $ 1,876.0 |
Intangible amortization and impairments | (12.5) | $ (12.6)
Ending balance, net book value | 1,866.1 |
Acquired Client Relationships |  |
Indefinite-lived |  |
Beginning balance, net book value | 1,590.6 |
Foreign currency translation | 6.5 |
Transfers | (4.1) |
Ending balance, net book value | 1,593.0 |
Acquired Client Relationships |  |
Definite-lived |  |
Beginning balance, gross book value | 1,355.1 |
Beginning balance, accumulated amortization | (1,069.7) |
Beginning balance, net book value | 285.4 |
Intangible amortization and impairments | (12.5) |
Foreign currency translation, gross | 0.2 |
Foreign currency translation, net | 0.2 |
Transfers, gross book value | (10.3) |
Transfers, accumulated amortization | 10.3 |
Ending balance, gross book value | 1,345.0 |
Ending balance, accumulated amortization | (1,071.9) |
Ending balance, net book value | 273.1 |
Total |  |
Beginning balance, net book value | 1,876.0 |
Intangible amortization and impairments | (12.5) |
Foreign currency translation | 6.7 |
Transfers | (4.1) |
Ending balance, net book value | $ 1,866.1 |

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