Investments of Operating Entities and Consolidated Funds - Operating Entities - Equity Method Investment - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Equity Method Investment, Other than Temporary Impairment	$ 0	$ 0	$ 0	$ 0
Net gains (losses) on other investments			$ 9,613,000	$ 35,494,000	$ 18,879,000

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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