Related Party Transactions - (Details) - Related Party - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related party transactions
Total related party revenues	$ 129.2	$ 87.5	$ 97.2
Investment advisory fee
Related party transactions
Total amounts due for investment advisory fee receivables from related parties	42.7	21.2
Investment advisory fee \| Consolidated Entity Excluding Consolidated Funds
Related party transactions
Total amounts due for investment advisory fee receivables from related parties	42.7	21.2
Management fees from unconsolidated Funds \| Consolidated Entity Excluding Consolidated Funds
Related party transactions
Total related party revenues	119.9	86.5	93.6
Performance fees from unconsolidated Funds \| Consolidated Entity Excluding Consolidated Funds
Related party transactions
Total related party revenues	$ 9.3	$ 1.0	$ 3.6

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details