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Variable Interest Entities - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Exposure to the obligations of the investment entities $ 112.6 $ 94.7
Company-Sponsored Private Funds | Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity [Line Items]    
Exposure to the obligations of the investment entities 853.8 752.3
Company-Sponsored Private Funds | Discontinued Operations | Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity [Line Items]    
Exposure to the obligations of the investment entities $ 0.8 $ 1.0