CONSOLIDATED INVESTMENT PRODUCTS - Private Equity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Private equity funds
Schedule of Investments [Line Items]
Fair Value	$ 425.5	$ 453.6
Total Unfunded Commitments	$ 56.5	$ 74.7
Weighted Average Remaining Term	5 years 10 months 24 days	6 years 4 months 24 days
Real estate investments
Schedule of Investments [Line Items]
Fair Value	$ 463.6	$ 552.0
Total Unfunded Commitments	$ 53.8	$ 53.8