Segment Reporting - Reconciliation of Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Income (loss) before provision for income taxes	$ 440.6	$ 218.8	$ 611.6	$ 339.5
Adjustments:
Unrealized principal investment (income) loss	(694.0)	(286.3)	(853.8)	(202.4)
Net income attributable to non-controlling interests in consolidated entities	8.4	1.1	37.0	34.3
(=) Distributable Earnings	440.6	218.8	611.6	339.5
Total Reportable Segments
Adjustments:
Net unrealized performance and fee related performance revenues	(124.3)	(15.2)	(34.3)	178.0
(=) Distributable Earnings	431.0	343.2	886.4	774.5
Fee Related Earnings	323.3	273.0	633.9	539.3
Total Reportable Segments \| Global Segments
Adjustments:
(=) Distributable Earnings	431.0	343.2	886.4	774.5
Realized principal investment income (loss)	33.5	26.6	63.5	60.3
Net interest	13.5	12.1	26.1	22.8
Fee Related Earnings	323.3	273.0	633.9	539.3
Reconciling Items
Adjustments:
Equity-based compensation	96.4	127.4	201.1	238.4
Acquisition or disposition-related charges, including amortization of intangibles and impairment	48.3	33.3	170.5	66.1
Tax (expense) benefit associated with certain foreign performance revenues	(0.1)	(0.2)	(0.1)	(1.2)
Net income attributable to non-controlling interests in consolidated entities	(8.4)	(1.1)	(37.0)	(34.3)
Other adjustments	4.0	28.3	17.1	40.5
(=) Distributable Earnings	(21.7)	(120.4)	(314.8)	(449.4)
Unrealized principal investment income (loss) \| Reconciling Items
Adjustments:
Unrealized principal investment (income) loss	(25.5)	(48.1)	(42.5)	(52.5)
Performance allocations
Adjustments:
Unrealized principal investment (income) loss	(638.8)	(198.2)	(861.7)	(41.2)
Realized performance revenues, net of related compensation	195.2	54.0	246.7	(30.2)
Performance allocations \| Total Reportable Segments \| Global Segments
Adjustments:
Realized performance revenues, net of related compensation	$ 87.7	$ 55.7	$ 215.1	$ 197.7

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