Accrued Compensation and Benefits - Schedule of Components (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Retirement Benefits [Abstract] | ||
| Accrued performance allocations and incentive fee related compensation | $ 4,037.7 | $ 5,111.8 |
| Accrued bonuses | 192.7 | 294.5 |
| Realized performance allocations and incentive fee related compensation not yet paid | 210.4 | 315.1 |
| Other | 129.1 | 128.0 |
| Total | $ 4,569.9 | $ 5,849.4 |
| X | ||||||||||
- Definition Accrued performance fees due to employees and advisors included in accrued compensation. No definition available.
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| X | ||||||||||
- Definition Realized Performance Allocations And Incentive Fee Related Compensation Not Yet Paid No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of obligations incurred for employer-related costs classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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