Organization - Additional Information (Details) $ / shares in Units, shares in Millions				1 Months Ended	6 Months Ended	12 Months Ended	22 Months Ended	245 Months Ended
	Aug. 02, 2022 USD ($) $ / shares	Oct. 30, 2018	Apr. 08, 2004 USD ($) $ / shares shares	Aug. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)
Organization [Line Items]
Operations commenced date			Apr. 08, 2004
Proceeds from initial public offering			$ 870,000,000
Common stock shares issued | shares			62.0
Common stock issued, price per share | $ / shares	$ 15.52		$ 15
Stock issued, reverse stock splits | shares			20.7
Shares Issued Price Per Share Adjusted for Reverse Stock Splits | $ / shares			$ 45
Reverse stock split, conversion ratio		0.33
Net proceeds from additional offerings of common stock	$ 30,000,000			$ 30,000,000			$ 0	$ 2,240,067,000
Repurchased common stock value					$ 2,297,000			$ 248,107,000
Maximum
Organization [Line Items]
Middle market investment companies EBIDTA						$ 75,000,000