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v3.25.1

Goodwill and Acquired Client Relationships - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Intangible Assets |  |  |
Impairment assessment assumptions, long-term revenue growth rates | 0.00% |  |
Impairment assessment assumptions, discount rates | 11.00% |  |
Acquired Client Relationships |  |  |
Intangible Assets |  |  |
Intangible impairment | $ 77.0 |  |
Carrying value of intangible assets | 1,530.0 |  | $ 1,597.5
Acquired Client Relationships For Certain Mutual Fund Assets |  |  |
Intangible Assets |  |  |
Amortization of intangible assets, noncontrolling interest | 59.2 |  |
Intangible impairment | 70.0 |  |
Acquired Client Relationships, Mutual Fund Product |  |  |
Intangible Assets |  |  |
Amortization of intangible assets, noncontrolling interest | 4.0 |  |
Intangible impairment | 7.0 |  |
Carrying value of intangible assets | $ 0.0 |  |
Minimum |  |  |
Intangible Assets |  |  |
Impairment assessment assumptions, revenue growth rates | (21.00%) |  |
Maximum |  |  |
Intangible Assets |  |  |
Impairment assessment assumptions, revenue growth rates | 0.00% |  |
Acquired Client Relationships |  |  |
Intangible Assets |  |  |
Amortization and impairment expenses of intangible assets | $ 6.3 | $ 7.3 |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |
Finite-lived intangible, future amortization expense, remainder of fiscal year | 20.0 |  |
Finite-lived intangible, future amortization expense in year one | 25.0 |  |
Finite-lived intangible, future amortization expense in year two | 25.0 |  |
Finite-lived intangible, future amortization expense in year three | 25.0 |  |
Finite-lived intangible, future amortization expense in year four | 15.0 |  |
Finite-lived intangible, future amortization expense in year five | $ 10.0 |  |

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