Unaudited Consolidated Statements of Operations - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022
Investment income
Paid-in-kind interest income				$ 116.0		$ 89.0
Total investment income		$ 465.0	$ 411.0	1,383.0		1,186.0
Operating expenses
Management fees		56.0	61.0	170.0		186.0
Subordinated income incentive fees	[1]	47.0	40.0	140.0		117.0
Administrative services expenses		3.0	4.0	10.0		12.0
Accounting and administrative fees		1.0	2.0	3.0		4.0
Interest expense	[2]	117.0	96.0	349.0		256.0
Other general and administrative expenses		7.0	6.0	19.0		16.0
Total operating expenses		231.0	209.0	691.0		591.0
Incentive fee waiver	[1]	0.0	(15.0)	0.0		(45.0)
Net expenses		231.0	194.0	691.0		546.0
Net investment income before taxes		234.0	217.0	692.0		640.0
Excise taxes		0.0	1.0	0.0		1.0
Net investment income		234.0	216.0	692.0		639.0
Realized and unrealized gain/loss
Net realized gain (loss) on investments:				(338.0)		214.0
Net realized gain (loss) on foreign currency forward contracts		3.0	2.0	7.0		9.0
Net realized gain (loss) on foreign currency		1.0	5.0	4.0		12.0
Net change in unrealized appreciation (depreciation) on investments:				237.0		(930.0)
Net change in unrealized appreciation (depreciation) on foreign currency forward contracts		0.0	15.0	(3.0)		31.0
Net change in unrealized gain (loss) on foreign currency		14.0	23.0	7.0		53.0
Total net realized and unrealized gain (loss)		31.0	(343.0)	(86.0)		(611.0)
Provision for taxes on realized gains on investments		0.0	0.0	0.0		(3.0)
Net increase (decrease) in net assets resulting from operations		$ 265.0	$ (127.0)	$ 606.0		$ 25.0
Per share information—basic and diluted
Net increase (decrease) in net assets resulting from operations (Earnings (Losses) per Share) - basic (in dollars per share)		$ 0.95	$ (0.45)	$ 2.16		$ 0.09
Net increase (decrease) in net assets resulting from operations (Earnings (Losses) per Share) - diluted (in dollars per share)		$ 0.95	$ (0.45)	$ 2.16		$ 0.09
Weighted average shares outstanding - basic (in shares)		280,066,433	283,175,526	280,347,651		283,787,605
Weighted average shares outstanding - diluted (in shares)		280,066,433	283,175,526	280,347,651		283,787,605
Non-controlled/unaffiliated investments
Investment income
Interest income		$ 290.0	$ 255.0	$ 886.0		$ 725.0
Paid-in-kind interest income		35.0	18.0	94.0		51.0
Fee income		7.0	23.0	17.0		63.0
Dividend and other income		16.0	9.0	52.0		34.0
Realized and unrealized gain/loss
Net realized gain (loss) on investments:		(50.0)	16.0	(147.0)		167.0
Net change in unrealized appreciation (depreciation) on investments:		94.0	(283.0)	125.0		(574.0)
Non-controlled/affiliated investments
Investment income
Interest income		6.0	8.0	19.0		25.0
Paid-in-kind interest income		9.0	12.0	27.1	[3]	37.0
Fee income		0.0	3.0	1.2	[3]	5.0
Dividend and other income		0.0	0.0	0.0	[3]	7.0
Realized and unrealized gain/loss
Net realized gain (loss) on investments:		(14.0)	51.0	(16.9)		90.0
Net change in unrealized appreciation (depreciation) on investments:		22.0	(99.0)	10.5		(140.0)
Controlled/affiliated investments
Investment income
Interest income		20.0	16.0	58.0		37.0
Paid-in-kind interest income		14.0	9.0	34.6	[4]	34.0
Fee income		5.0	0.0	4.8	[4]	0.0
Dividend and other income		63.0	58.0	189.2	[4]	168.0
Realized and unrealized gain/loss
Net realized gain (loss) on investments:		(2.0)	(4.0)	(174.1)		(43.0)
Net change in unrealized appreciation (depreciation) on investments:		$ (37.0)	$ (69.0)	$ 100.8		$ (216.0)

[1] See Note 2 and 4 for a discussion of the methodology employed by the Company in calculating the subordinated income incentive fees.

[2] See Note 9 for a discussion of the Company’s financing arrangements.

[3] Interest, PIK, fee and dividend income presented for the full nine months ended September 30, 2023.

[4] Interest, PIK, fee and dividend income presented for the full nine months ended September 30, 2023.