Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Cash flows from operating activities
Net increase (decrease) in net assets resulting from operations	$ 142	$ (73)	$ 341	$ 152
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Purchases of investments			(633)	(2,872)
Paid-in-kind interest			(70)	(62)
Proceeds from sales and repayments of investments			1,231	2,579
Net realized gain (loss) on investments:			272	(151)
Net change in unrealized (appreciation) depreciation on investments			(158)	479
Net change in unrealized (appreciation) depreciation on foreign currency forward contracts			3	(16)
Accretion of discount			(29)	(50)
Amortization of deferred financing costs and discount			8	7
Unrealized (gain)/loss on borrowings in foreign currency			4	(36)
(Increase) decrease in receivable for investments sold and repaid			95	69
(Increase) decrease in income receivable			(48)	(37)
(Increase) decrease in prepaid expenses and other assets			(1)	(1)
Increase (decrease) in payable for investments purchased			(14)	25
Increase (decrease) in management fees payable			(3)	3
Increase (decrease) in subordinated income incentive fees payable			20	3
Increase (decrease) in administrative services expense payable			0	0
Increase (decrease) in interest payable			5	7
Increase (decrease) in other accrued expenses and liabilities			(15)	(14)
Net cash provided by (used in) operating activities			1,008	85
Cash flows from financing activities
Repurchases of common stock			(32)	(23)
Stockholder distributions			(402)	(355)
Borrowings under financing arrangements			1,192	2,181
Repayments of financing arrangements			(1,737)	(1,977)
Deferred financing costs paid			(6)	(19)
Net cash provided by (used in) financing activities			(985)	(193)
Total increase (decrease) in cash			23	(108)
Cash, and foreign currency at beginning of period			251	377	$ 377
Cash, and foreign currency at end of period	$ 274	$ 269	274	269	$ 251
Supplemental disclosure
Non-cash purchases of investments			(41)	(518)
Non-cash sales of investments			41	518
Local and excise taxes paid			20	11
Interest paid during the period			$ 219	$ 146