Summary of Significant Accounting Polices and Adoption of New Accounting Pronouncements - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) investment	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) investment	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of investments electing fair value option | investment	74		74
Accrued caried interests	$ 32,200,000		$ 32,200,000		$ 77,300,000
Cash payments received on carried interests	0	$ 0	0	$ 0
Carried interest compensation payments	0	$ 0	0	$ 0
Accrued Expenses and Other Liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued caried interests	$ 8,100,000		$ 8,100,000		$ 22,800,000
Co-investments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership interest percentage	40.00%		40.00%