Segment Reporting - Reconciliation of Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Income (loss) before provision for income taxes	$ 788.8	$ 152.2	$ 1,128.3	$ 241.8
Adjustments:
Unrealized principal investment (income) loss	(1,831.5)	17.7	(2,033.9)	99.2
Net income attributable to non-controlling interests in consolidated entities	20.0	29.7	54.3	90.0
(=) Distributable Earnings	788.8	152.2	1,128.3	241.8
Realized performance revenues, net of related compensation	634.5	(64.4)	604.3	(163.9)
Total Reportable Segments
Adjustments:
Net unrealized performance and fee related performance revenues	(564.4)	138.9	(386.4)	471.6
(=) Distributable Earnings	367.1	367.4	1,141.6	1,027.8
Realized performance revenues, net of related compensation	90.6	150.0
Realized principal investment income (loss)	9.1	23.4
Net interest	10.5	10.7
Fee Related Earnings	277.9	204.7	817.2	605.4
Total Reportable Segments \| Global Segments
Adjustments:
(=) Distributable Earnings	367.1	367.4	1,141.6	1,027.8
Realized performance revenues, net of related compensation	90.6	150.0	288.3	394.6
Realized principal investment income (loss)	9.1	23.4	69.4	69.3
Net interest	10.5	10.7	33.3	41.5
Fee Related Earnings	277.9	204.7	817.2	605.4
Total Reportable Segments \| Global Private Equity
Adjustments:
(=) Distributable Earnings	235.5	292.2	747.7	795.7
Realized performance revenues, net of related compensation	83.7	146.4	271.5	368.2
Realized principal investment income (loss)	10.0	14.4	35.7	39.5
Net interest	6.4	8.0	20.4	30.5
Fee Related Earnings	148.2	139.4	460.9	418.5
Total Reportable Segments \| Global Credit
Adjustments:
(=) Distributable Earnings	80.5	54.8	262.4	179.1
Realized performance revenues, net of related compensation	4.6	1.3	7.5	19.2
Realized principal investment income (loss)	(2.8)	8.0	30.2	25.2
Net interest	3.5	2.1	10.0	8.3
Fee Related Earnings	82.2	47.6	234.7	143.0
Total Reportable Segments \| Global Investment Solutions
Adjustments:
(=) Distributable Earnings	51.1	20.4	131.5	53.0
Realized performance revenues, net of related compensation	2.3	2.3	9.3	7.2
Realized principal investment income (loss)	1.9	1.0	3.5	4.6
Net interest	0.6	0.6	2.9	2.7
Fee Related Earnings	47.5	17.7	121.6	43.9
Reconciling Items
Adjustments:
Equity-based compensation	122.0	67.3	360.4	195.1
Acquisition or disposition-related charges, including amortization of intangibles and impairment	37.4	50.6	103.5	113.0
Tax expense associated with certain foreign performance revenues	(0.2)	(0.2)	(1.4)	(0.8)
Net income attributable to non-controlling interests in consolidated entities	(20.0)	(29.7)	(54.3)	(90.0)
Other adjustments	5.3	5.4	45.8	11.6
(=) Distributable Earnings	399.7	(247.4)	(49.7)	(882.9)
Reconciling Items \| Fortitude Group Holdings, LLC
Adjustments:
Principal investment loss from dilution of indirect investment in Fortitude	0.0	0.0	0.0	104.0
Unrealized principal investment income (loss) \| Reconciling Items
Adjustments:
Unrealized principal investment (income) loss	(1.8)	(17.1)	(54.3)	(18.5)
Unrealized principal investment income (loss) \| Reconciling Items \| Fortitude Group Holdings, LLC
Adjustments:
Principal investment loss from dilution of indirect investment in Fortitude	$ 0.0	$ 0.0	$ 0.0	$ 104.0

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