Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023
Assets
Investment owned, cost	$ 14,044.0	[1]	$ 15,419.8	[2]
Foreign currency, cost	17.0		8.0
Liabilities
Debt financing costs	$ 49.0		$ 36.0
Stockholders’ equity
Preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000		50,000,000
Preferred stock, shares issued (in shares)	0		0
Preferred stock, shares outstanding (in shares)	0		0
Common stock, par value (in dollars per share)	$ 0.001		$ 0.001
Common stock, shares authorized (in shares)	750,000,000		750,000,000
Common stock, shares issued (in shares)	280,066,433		280,066,433
Common stock, shares outstanding (in shares)	280,066,433		280,066,433
Non-controlled/unaffiliated
Assets
Investment owned, cost	$ 8,830.0		$ 11,078.0
Non-controlled/affiliated
Assets
Investment owned, cost	1,128.0		868.0
Controlled/affiliated
Assets
Investment owned, cost	$ 4,086.0		$ 3,474.0

[1] Security may be an obligation of one or more entities affiliated with the named company.

[2] Security may be an obligation of one or more entities affiliated with the named company.