Accrued Compensation and Benefits - Components (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2018
Business Acquisition [Line Items]
Accrued performance allocations and incentive fee related compensation	$ 4,255.8	$ 3,625.3
Accrued bonuses	498.2	466.6
Employment-based contingent cash consideration	2.5	76.5
Accrued pension liability	13.1	9.5
Other	152.6	143.0
Total	4,922.2	4,320.9
One time charge to incremental expense	1,100.0
Realized performance allocations and incentive fee-related compensation not yet paid	44.5	$ 26.7
Carlyle Aviation Partners/Apollo Aviation Group
Business Acquisition [Line Items]
Contingent consideration, estimated maximum range			$ 150.0
Payments for earn out	68.6
Earnout payable	2.4
Abingworth
Business Acquisition [Line Items]
Contingent consideration, estimated maximum range	$ 130.0