Investments - Investment Components of Accrued Performance Fees (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Accrued performance allocations	$ 7,117.7	$ 8,133.0
Maximum lag period for which the partnership investments in funds are valued	90 days	90 days
Global Private Equity
Segment Reporting Information [Line Items]
Accrued performance allocations	$ 5,577.1	$ 6,412.8
Global Credit
Segment Reporting Information [Line Items]
Accrued performance allocations	193.9	300.3
Global Investment Solutions
Segment Reporting Information [Line Items]
Accrued performance allocations	$ 1,346.7	$ 1,419.9