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Equity Method Investments in Affiliates - Additional Information (Details) shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 31, 2025 USD ($) shares | Dec. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) affiliate | Jun. 30, 2024 USD ($) yr | Jun. 30, 2025 USD ($) affiliate | Jun. 30, 2024 USD ($) yr | Dec. 31, 2022 USD ($) | Dec. 31, 2024 USD ($) affiliate
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Number of affiliates | affiliate |  |  | 24 |  | 24 |  |  | 22
Equity method investments |  |  | $ 110.0 |  | $ 110.0 |  |  | $ 111.4
Peppertree Capital Management |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Acquisition of equity method investments |  |  |  |  |  |  | $ 140.0 |
Equity method investments |  |  | 127.5 |  | 127.5 |  |  |
Peppertree Capital Management | Subsequent Event | TPG Inc. |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Sale of equity interests, total consideration | $ 254.0 |  |  |  |  |  |  |
Sale of equity interests, cash proceeds | $ 100.0 |  |  |  |  |  |  |
Sale of equity interests, equity interests issuable, number of shares (in shares) | shares | 2.9 |  |  |  |  |  |  |
Comvest Partners | Forecast |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Proceeds from sale of equity method investments |  | $ 285.0 |  |  |  |  |  |
Acquired Client Relationships |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Amortization of intangible assets |  |  | 6.3 | $ 7.3 | 12.6 | $ 14.5 |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Finite-lived intangible, future amortization expense, remainder of fiscal year |  |  | 13.0 |  | 13.0 |  |  |
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 |  |  |
Equity Method Investee |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Impairment expense |  |  |  | $ 39.9 |  |  |  |
Equity Method Investee | Measurement Input, Growth Rate Period |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input | yr |  |  |  | 10 |  | 10 |  |
Equity Method Investee | Measurement Input, Growth Rate |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | (0.025) |  | (0.025) |  |
Equity Method Investee | Measurement Input, Long-Term Growth Rate |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.03 |  | 0.03 |  |
Equity Method Investee | Measurement Input, Discount Rate, Asset Based Fees |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.12 |  | 0.12 |  |
Equity Method Investee | Measurement Input, Discount Rate, Performance Based Fees |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.20 |  | 0.20 |  |
Equity Method Investee | Measurement Input, Market Participant Tax Rates |  |  |  |  |  |  |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Equity method investment, measurement input |  |  |  | 0.21 |  | 0.21 |  |
Equity Method Investee | Acquired Client Relationships |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Amortization of intangible assets |  |  | 27.0 | $ 20.9 | 45.6 | $ 41.7 |  |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |  |  |  |  |
Finite-lived intangible, future amortization expense, remainder of fiscal year |  |  | 50.0 |  | 50.0 |  |  |
Finite-lived intangible, future amortization expense in year one |  |  | 95.0 |  | 95.0 |  |  |
Finite-lived intangible, future amortization expense in year two |  |  | 95.0 |  | 95.0 |  |  |
Finite-lived intangible, future amortization expense in year three |  |  | 80.0 |  | 80.0 |  |  |
Finite-lived intangible, future amortization expense in year four |  |  | 65.0 |  | 65.0 |  |  |
Finite-lived intangible, future amortization expense in year five |  |  | $ 65.0 |  | $ 65.0 |  |  |

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