Impairment Assessment Assumptions, Discount Rates

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Impairment Assessment Assumptions, Long-Term Revenue Growth Rates

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Impairment Assessment Assumptions, Revenue Growth Rates

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- Definition

Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill), Controlling Interest

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-- None. No documentation exists for this element. --

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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- Definition

Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Goodwill and Acquired Client Relationships - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Estimated Future Amortization Expense of Finite-Lived Intangibles
Impairment assessment assumptions, long-term revenue growth rates		0.00%
Impairment assessment assumptions, discount rates		11.00%
Acquired Client Relationships For Certain Mutual Fund Assets
Estimated Future Amortization Expense of Finite-Lived Intangibles
Amortization of intangible assets, noncontrolling interest		$ 59.2
Intangible impairment		70.0
Acquired Client Relationships, Mutual Fund Product
Estimated Future Amortization Expense of Finite-Lived Intangibles
Amortization of intangible assets, noncontrolling interest		4.0
Intangible impairment		7.0
Carrying value of intangible assets		$ 0.0
Minimum
Estimated Future Amortization Expense of Finite-Lived Intangibles
Impairment assessment assumptions, revenue growth rates		(21.00%)
Maximum
Estimated Future Amortization Expense of Finite-Lived Intangibles
Impairment assessment assumptions, revenue growth rates		0.00%
Acquired Client Relationships
Intangible Assets
Amortization and impairment expenses of intangible assets	$ 6.3		$ 7.3	$ 19.0	$ 21.8
Estimated Future Amortization Expense of Finite-Lived Intangibles
Finite-lived intangible, future amortization expense, remainder of fiscal year	6.0			6.0
Finite-lived intangible, future amortization expense in year one	25.0			25.0
Finite-lived intangible, future amortization expense in year two	25.0			25.0
Finite-lived intangible, future amortization expense in year three	25.0			25.0
Finite-lived intangible, future amortization expense in year four	15.0			15.0
Finite-lived intangible, future amortization expense in year five	$ 10.0			$ 10.0