Fair Value Measurements - Valuation Methodologies (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Private equity funds
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 6,430
Direct credit investments
Schedule of Equity Method Investments [Line Items]
Fair Value	785
Direct equity investments
Schedule of Equity Method Investments [Line Items]
Fair Value	6,934
Discounted cash flow | Direct credit investments | VIE
Schedule of Equity Method Investments [Line Items]
Investments	16,853
Recent precedent transactions | Direct credit investments | VIE
Schedule of Equity Method Investments [Line Items]
Investments	$ 37,772
Selected market return | Adjusted net asset value | Minimum | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.048
Selected market return | Adjusted net asset value | Maximum | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.079
Selected market return | Adjusted net asset value | Weighted Average | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.073
Market yield | Discounted cash flow | Minimum | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.132
Market yield | Discounted cash flow | Minimum | Direct credit investments | VIE
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.086
Market yield | Discounted cash flow | Maximum | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.132
Market yield | Discounted cash flow | Maximum | Direct credit investments | VIE
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.102
Market yield | Discounted cash flow | Weighted Average | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.132
Market yield | Discounted cash flow | Weighted Average | Direct credit investments | VIE
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.097
EBITDA multiple | Market approach | Minimum | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	8.25
EBITDA multiple | Market approach | Maximum | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	14.75
EBITDA multiple | Market approach | Weighted Average | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	12.62
Equity multiple | Market approach | Weighted Average | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	1.65