Supplemental Financial Information - Financial Position (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 1,190.3	$ 1,266.0	$ 1,276.5
Cash and cash equivalents held at Consolidated Funds	570.9	830.4	426.0
Restricted cash	9.0	0.5	1.4
Investments	10,739.9	10,936.7
Investments of Consolidated Funds	9,329.8	7,782.4
Due from affiliates and other receivables, net	790.2	805.6
Due from affiliates and other receivables of Consolidated Funds, net	228.3	237.1
Fixed assets, net	188.2	185.3
Lease right-of-use assets, net	356.1	341.4
Deposits and other	67.4	56.4
Intangible assets, net	603.2	634.1
Deferred tax assets	22.2	27.6
Total assets	24,095.5	23,103.5
Liabilities and equity
Debt obligations	2,156.1	2,143.5
Loans payable of Consolidated Funds	7,801.7	6,864.2
Accounts payable, accrued expenses and other liabilities	367.1	389.8
Accrued compensation and benefits	5,063.5	5,446.6
Due to affiliates	292.8	241.9
Deferred revenue	421.5	138.7
Deferred tax liabilities	106.0	137.0
Other liabilities of Consolidated Funds	955.9	861.6
Lease liabilities	501.1	488.6
Accrued giveback obligations	44.6	44.0
Total liabilities	17,710.3	16,755.9
Common stock	3.6	3.6
Additional paid-in capital	3,997.7	3,892.3
Retained earnings	1,864.8	2,040.8
Accumulated other comprehensive loss	(288.7)	(329.8)
Non-controlling interests in consolidated entities	807.8	740.7
Total equity	6,385.2	6,347.6	5,740.0	$ 5,784.5
Total liabilities and equity	24,095.5	23,103.5
Performance allocations	6,985.8	7,053.5
Consolidated Operating Entities
Assets
Cash and cash equivalents	1,190.3		1,276.5
Cash and cash equivalents held at Consolidated Funds	570.9		426.0
Restricted cash	9.0		$ 1.4
Consolidated Entities and Consolidated Funds \| Consolidated Operating Entities
Assets
Cash and cash equivalents	1,190.3	1,266.0
Cash and cash equivalents held at Consolidated Funds	0.0	0.0
Restricted cash	9.0	0.5
Investments	11,331.5	11,324.1
Investments of Consolidated Funds	0.0	0.0
Due from affiliates and other receivables, net	1,083.9	1,111.0
Due from affiliates and other receivables of Consolidated Funds, net	0.0	0.0
Fixed assets, net	188.2	185.3
Lease right-of-use assets, net	356.1	341.4
Deposits and other	65.6	54.6
Intangible assets, net	603.2	634.1
Deferred tax assets	22.2	27.6
Total assets	14,850.0	14,944.6
Liabilities and equity
Debt obligations	2,156.1	2,143.5
Loans payable of Consolidated Funds	0.0	0.0
Accounts payable, accrued expenses and other liabilities	367.1	389.8
Accrued compensation and benefits	5,063.5	5,446.6
Due to affiliates	237.3	236.6
Deferred revenue	421.5	138.7
Deferred tax liabilities	106.0	137.0
Other liabilities of Consolidated Funds	0.0	0.0
Lease liabilities	501.1	488.6
Accrued giveback obligations	44.6	44.0
Total liabilities	8,897.2	9,024.8
Common stock	3.6	3.6
Additional paid-in capital	3,997.7	3,892.3
Retained earnings	1,864.8	2,040.8
Accumulated other comprehensive loss	(312.5)	(350.5)
Non-controlling interests in consolidated entities	399.2	333.6
Total equity	5,952.8	5,919.8
Total liabilities and equity	14,850.0	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	570.9	830.4
Restricted cash	0.0	0.0
Investments	0.0	0.0
Investments of Consolidated Funds	9,329.8	7,782.4
Due from affiliates and other receivables, net	9.0	0.0
Due from affiliates and other receivables of Consolidated Funds, net	228.3	237.1
Fixed assets, net	0.0	0.0
Lease right-of-use assets, net	0.0	0.0
Deposits and other	1.8	1.8
Intangible assets, net	0.0	0.0
Deferred tax assets	0.0	0.0
Total assets	10,139.8	8,851.7
Liabilities and equity
Debt obligations	0.0	0.0
Loans payable of Consolidated Funds	8,097.5	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	55.5	5.3
Deferred revenue	0.0	0.0
Deferred tax liabilities	0.0	0.0
Other liabilities of Consolidated Funds	956.0	861.7
Lease liabilities	0.0	0.0
Accrued giveback obligations	0.0	0.0
Total liabilities	9,109.0	8,028.6
Common stock	0.0	0.0
Additional paid-in capital	623.6	423.5
Retained earnings	0.0	0.0
Accumulated other comprehensive loss	(1.4)	(7.5)
Non-controlling interests in consolidated entities	408.6	407.1
Total equity	1,030.8	823.1
Total liabilities and equity	10,139.8	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
Restricted cash	0.0	0.0
Investments	(591.6)	(387.4)
Investments of Consolidated Funds	0.0	0.0
Due from affiliates and other receivables, net	(302.7)	(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	(894.3)	(692.8)
Liabilities and equity
Debt obligations	0.0	0.0
Loans payable of Consolidated Funds	(295.8)	(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	(295.9)	(297.5)
Common stock	0.0	0.0
Additional paid-in capital	(623.6)	(423.5)
Retained earnings	0.0	0.0
Accumulated other comprehensive loss	25.2	28.2
Non-controlling interests in consolidated entities	0.0	0.0
Total equity	(598.4)	(395.3)
Total liabilities and equity	$ (894.3)	$ (692.8)

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.