Net Assets - Common Shares Of Beneficial Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Share repurchases (in shares)	(42,937)
Net increase (decrease) (in shares)	404,677,451	201,322,288	426,743,467
Net increase (decrease)	$ 10,321,004	$ 5,027,971	$ 10,965,579
Class I
Class of Stock [Line Items]
Subscriptions (in shares)	292,239,395	172,155,545	299,758,354
Subscriptions	$ 7,452,201	$ 4,301,597	$ 7,657,964
Share transfers between classes (in shares)	4,920,648	46,741,153	2,883,597
Share transfers between classes	$ 125,969	$ 1,160,908	$ 72,944
Distributions reinvested (in shares)	42,886,849	31,244,345	20,643,452
Distributions reinvested	$ 1,093,651	$ 779,404	$ 520,100
Share repurchases (in shares)	(65,108,461)	(106,798,719)	(78,639,416)
Share repurchases	$ (1,660,006)	$ (2,667,420)	$ (1,938,513)
Early repurchase deduction (in shares)	0	0	0
Early repurchase deduction	$ 1,030	$ 199	$ 3,833
Net increase (decrease) (in shares)	274,938,431	143,342,324	244,645,987
Net increase (decrease)	$ 7,012,845	$ 3,574,688	$ 6,316,328
Class S
Class of Stock [Line Items]
Subscriptions (in shares)	122,935,535	97,788,907	151,557,777
Subscriptions	$ 3,134,546	$ 2,442,624	$ 3,867,398
Share transfers between classes (in shares)	(4,910,213)	(2,790,572)	(1,117,876)
Share transfers between classes	$ (125,680)	$ (69,353)	$ (27,793)
Distributions reinvested (in shares)	20,705,487	13,972,434	8,108,844
Distributions reinvested	$ 528,016	$ 348,634	$ 204,169
Share repurchases (in shares)	(16,458,223)	(17,647,552)	(8,432,731)
Share repurchases	$ (419,727)	$ (441,447)	$ (208,436)
Early repurchase deduction (in shares)	0	0	0
Early repurchase deduction	$ 509	$ 213	$ 828
Net increase (decrease) (in shares)	122,272,586	91,323,217	150,116,014
Net increase (decrease)	$ 3,117,664	$ 2,280,671	$ 3,836,166
Class D
Class of Stock [Line Items]
Subscriptions (in shares)	7,795,424	10,437,577	32,952,511
Subscriptions	$ 198,906	$ 259,923	$ 837,827
Share transfers between classes (in shares)	(10,436)	(43,951,096)	(1,765,721)
Share transfers between classes	$ (289)	$ (1,091,555)	$ (45,151)
Distributions reinvested (in shares)	350,175	728,009	1,465,842
Distributions reinvested	$ 8,931	$ 18,060	$ 36,842
Share repurchases (in shares)	(668,729)	(557,743)	(671,166)
Share repurchases	$ (17,076)	$ (13,828)	$ (16,537)
Early repurchase deduction (in shares)	0	0	0
Early repurchase deduction	$ 23	$ 12	$ 104
Net increase (decrease) (in shares)	7,466,434	(33,343,253)	31,981,466
Net increase (decrease)	$ 190,495	$ (827,388)	$ 813,085