Amount of realized performance fees, if the fund were liquidated at the reporting date fair value, that would be given back to the fund investors at the end of the fund's life if the fund fair value does not recover sufficiently to pass through the hurdle rate that allows for the recognition of performance fees.

No definition available.

Supplemental Financial Information - Schedule of Supplemental Financial Position (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 2,221.7		$ 1,266.0	$ 1,376.8
Cash and cash equivalents held at Consolidated Funds	1,037.3		830.4	488.5
Investments	10,515.4		10,936.7
Investments of Consolidated Funds	11,083.3		7,782.4
Due from affiliates and other receivables, net	741.2		805.6
Due from affiliates and other receivables of Consolidated Funds, net	259.4		237.1
Fixed assets, net	199.1		185.3
Lease right-of-use assets, net	340.6		341.4
Deposits and other	89.6		56.9
Intangible assets, net	540.0		634.1
Deferred tax assets	28.3		27.6
Total assets	27,055.9		23,103.5
Liabilities and equity
Debt obligations	2,984.2		2,143.5
Loans payable of Consolidated Funds	9,199.5		6,864.2
Accounts payable, accrued expenses and other liabilities	433.8		389.8
Accrued compensation and benefits	5,288.4		5,446.6
Due to affiliates	214.8		241.9
Deferred revenue	373.0		138.7
Deferred tax liabilities	80.7		137.0
Other liabilities of Consolidated Funds	1,112.2		861.6
Lease liabilities	479.6		488.6
Accrued giveback obligations	44.6		44.0
Total liabilities	20,210.8		16,755.9
Common stock	3.6		3.6
Additional paid-in capital	4,194.7		3,892.3
Retained earnings	1,617.8		2,040.8
Accumulated other comprehensive loss	(196.5)		(329.8)
Non-controlling interests in consolidated entities	1,225.5		740.7
Total equity	6,845.1	$ 6,717.6	6,347.6	6,335.4	$ 5,729.4	$ 5,784.5
Total liabilities and equity	27,055.9		23,103.5
Performance allocations	6,956.3		7,053.5
Consolidated Operating Entities
Assets
Cash and cash equivalents	2,221.7			1,376.8
Cash and cash equivalents held at Consolidated Funds	1,037.3			$ 488.5
Consolidated Entities and Consolidated Funds \| Consolidated Operating Entities
Assets
Cash and cash equivalents	2,221.7		1,266.0
Cash and cash equivalents held at Consolidated Funds	0.0		0.0
Investments	11,436.1		11,324.1
Investments of Consolidated Funds	0.0		0.0
Due from affiliates and other receivables, net	1,038.7		1,111.0
Due from affiliates and other receivables of Consolidated Funds, net	0.0		0.0
Fixed assets, net	199.1		185.3
Lease right-of-use assets, net	340.6		341.4
Deposits and other	84.6		55.1
Intangible assets, net	540.0		634.1
Deferred tax assets	28.3		27.6
Total assets	15,889.1		14,944.6
Liabilities and equity
Debt obligations	2,984.2		2,143.5
Loans payable of Consolidated Funds	0.0		0.0
Accounts payable, accrued expenses and other liabilities	433.8		389.8
Accrued compensation and benefits	5,288.4		5,446.6
Due to affiliates	209.0		236.6
Deferred revenue	373.0		138.7
Deferred tax liabilities	80.7		137.0
Other liabilities of Consolidated Funds	0.0		0.0
Lease liabilities	479.6		488.6
Accrued giveback obligations	44.6		44.0
Total liabilities	9,893.3		9,024.8
Common stock	3.6		3.6
Additional paid-in capital	4,194.7		3,892.3
Retained earnings	1,617.8		2,040.8
Accumulated other comprehensive loss	(232.9)		(350.5)
Non-controlling interests in consolidated entities	412.6		333.6
Total equity	5,995.8		5,919.8
Total liabilities and equity	15,889.1		14,944.6
Consolidated Entities and Consolidated Funds \| Consolidated Funds
Assets
Cash and cash equivalents	0.0		0.0
Cash and cash equivalents held at Consolidated Funds	1,037.3		830.4
Investments	0.0		0.0
Investments of Consolidated Funds	11,083.3		7,782.4
Due from affiliates and other receivables, net	3.3		0.0
Due from affiliates and other receivables of Consolidated Funds, net	259.4		237.1
Fixed assets, net	0.0		0.0
Lease right-of-use assets, net	0.0		0.0
Deposits and other	5.0		1.8
Intangible assets, net	0.0		0.0
Deferred tax assets	0.0		0.0
Total assets	12,388.3		8,851.7
Liabilities and equity
Debt obligations	0.0		0.0
Loans payable of Consolidated Funds	9,487.3		7,161.6
Accounts payable, accrued expenses and other liabilities	0.0		0.0
Accrued compensation and benefits	0.0		0.0
Due to affiliates	5.8		5.3
Deferred revenue	0.0		0.0
Deferred tax liabilities	0.0		0.0
Other liabilities of Consolidated Funds	1,112.3		861.7
Lease liabilities	0.0		0.0
Accrued giveback obligations	0.0		0.0
Total liabilities	10,605.4		8,028.6
Common stock	0.0		0.0
Additional paid-in capital	949.1		423.5
Retained earnings	0.0		0.0
Accumulated other comprehensive loss	20.9		(7.5)
Non-controlling interests in consolidated entities	812.9		407.1
Total equity	1,782.9		823.1
Total liabilities and equity	12,388.3		8,851.7
Eliminations
Assets
Cash and cash equivalents	0.0		0.0
Cash and cash equivalents held at Consolidated Funds	0.0		0.0
Investments	(920.7)		(387.4)
Investments of Consolidated Funds	0.0		0.0
Due from affiliates and other receivables, net	(300.8)		(305.4)
Due from affiliates and other receivables of Consolidated Funds, net	0.0		0.0
Fixed assets, net	0.0		0.0
Lease right-of-use assets, net	0.0		0.0
Deposits and other	0.0		0.0
Intangible assets, net	0.0		0.0
Deferred tax assets	0.0		0.0
Total assets	(1,221.5)		(692.8)
Liabilities and equity
Debt obligations	0.0		0.0
Loans payable of Consolidated Funds	(287.8)		(297.4)
Accounts payable, accrued expenses and other liabilities	0.0		0.0
Accrued compensation and benefits	0.0		0.0
Due to affiliates	0.0		0.0
Deferred revenue	0.0		0.0
Deferred tax liabilities	0.0		0.0
Other liabilities of Consolidated Funds	(0.1)		(0.1)
Lease liabilities	0.0		0.0
Accrued giveback obligations	0.0		0.0
Total liabilities	(287.9)		(297.5)
Common stock	0.0		0.0
Additional paid-in capital	(949.1)		(423.5)
Retained earnings	0.0		0.0
Accumulated other comprehensive loss	15.5		28.2
Non-controlling interests in consolidated entities	0.0		0.0
Total equity	(933.6)		(395.3)
Total liabilities and equity	$ (1,221.5)		$ (692.8)