Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Cash flows from operating activities
Net increase (decrease) in net assets resulting from operations	$ 105	$ 142	$ 278	$ 341
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Purchases of investments			(2,704)	(633)
Paid-in-kind interest			(63)	(70)
Proceeds from sales and repayments of investments			3,191	1,231
Net realized (gain) loss on investments			307	272
Net change in unrealized (appreciation) depreciation on investments			(138)	(158)
Net change in unrealized (appreciation) depreciation on foreign currency forward contracts			13	3
Accretion of discount			(31)	(29)
Amortization of deferred financing costs and discount			9	8
Unrealized (gain)/loss on borrowings in foreign currency			(17)	4
(Increase) decrease in receivable for investments sold and repaid			21	95
(Increase) decrease in income receivable			(27)	(48)
(Increase) decrease in prepaid expenses and other assets			(2)	(1)
Increase (decrease) in payable for investments purchased			1	(14)
Increase (decrease) in management fees payable			(2)	(3)
Increase (decrease) in subordinated income incentive fees payable			3	20
Increase (decrease) in administrative services expense payable			2	0
Increase (decrease) in interest payable			19	5
Increase (decrease) in other accrued expenses and liabilities			(18)	(15)
Net cash provided by (used in) operating activities			842	1,008
Cash flows from financing activities
Repurchases of common stock			0	(32)
Stockholder distributions			(420)	(402)
Borrowings under financing arrangements			2,355	1,192
Repayments of financing arrangements			(2,560)	(1,737)
Deferred financing costs paid			(15)	(6)
Net cash provided by (used in) financing activities			(640)	(985)
Total increase (decrease) in cash			202	23
Cash, and foreign currency at beginning of period			231	251	$ 251
Cash, and foreign currency at end of period	$ 433	$ 274	433	274	$ 231
Supplemental disclosure
Non-cash purchases of investments			(755)	(41)
Non-cash sales of investments			755	41
Local and excise taxes paid			25	20
Interest paid during the period			$ 203	$ 219