Redeemable Noncontrolling Interests and Investment Manager Noncontrolling Interests Liability - Schedule of Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Balance at beginning of period	$ 102,934
Net income (loss) attributable to noncontrolling interests	(339)
Total net income (loss) attributable to noncontrolling interests	(1,321)	$ (543)
Business acquisition	104,564
Net subscriptions (redemptions) and other	(13,109)
Balance at end of period	193,068
CIP
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Balance at beginning of period	76,152
Net income (loss) attributable to noncontrolling interests	(873)
Changes in redemption value	0	$ (3,749)
Total net income (loss) attributable to noncontrolling interests	(873)
Business acquisition	0
Net subscriptions (redemptions) and other	(13,046)
Balance at end of period	62,233
Investment Managers
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Balance at beginning of period	26,782
Net income (loss) attributable to noncontrolling interests	534
Total net income (loss) attributable to noncontrolling interests	(448)
Business acquisition	104,564
Net subscriptions (redemptions) and other	(63)
Balance at end of period	130,835
Portion at Other than Fair Value Measurement
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Changes in redemption value	(982)
Portion at Other than Fair Value Measurement \| CIP
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Changes in redemption value	0
Portion at Other than Fair Value Measurement \| Investment Managers
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Changes in redemption value	$ (982)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Publisher FASB
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- Definition

Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

+ References

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-Topic 220
-SubTopic 10
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- Definition

Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
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-URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3

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- Definition

Subsidiary earnings portion attributable to temporary equity.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 480
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The portion of net income or loss attributable to temporary equity interest.

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Noncontrolling Interest, Subscriptions (Redemptions) And Other

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