Condensed Consolidated Statements of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operations:
Net investment income after excise tax	$ 778,197	$ 571,182	$ 2,217,638	$ 1,341,209
Net realized gain (loss)	(134,981)	(99,556)	(307,091)	(110,874)
Net unrealized appreciation (depreciation)	384,505	(135,308)	552,835	(1,085,983)
Net increase (decrease) in net assets resulting from operations	1,027,721	336,318	2,463,382	144,352
Distributions to common shareholders:
Net decrease in net assets resulting from distributions	(646,890)	(523,865)	(1,828,855)	(1,251,352)
Share transactions:
Total increase (decrease) in net assets	2,354,024	1,407,864	3,464,598	9,523,756
Net assets, beginning of period	23,795,639	20,970,712	22,685,065	12,854,820
Net assets, end of period	26,149,663	22,378,576	26,149,663	22,378,576
Class I
Share transactions:
Proceeds from shares sold	1,320,655	1,253,674	2,782,476	6,973,021
Share transfers between classes	17,624	16,753	1,149,483	56,232
Distributions reinvested	202,132	151,911	557,869	370,696
Class I | Common Stock
Distributions to common shareholders:
Net decrease in net assets resulting from distributions	(440,051)	(359,759)	(1,247,456)	(871,105)
Share transactions:
Proceeds from shares sold	1,320,655	1,253,674	2,782,476	6,973,021
Share transfers between classes	17,624	16,753	1,149,483	56,232
Distributions reinvested	202,132	151,911	557,869	370,696
Repurchased shares	(409,713)	(611,647)	(2,230,246)	(904,839)
Net increase (decrease) from share transactions	1,130,698	810,691	2,259,582	6,495,110
Net assets, beginning of period			14,537,932
Net assets, end of period	17,212,365	14,734,969	17,212,365	14,734,969
Class S
Share transactions:
Proceeds from shares sold	708,441	601,002	1,601,265	3,406,722
Share transfers between classes	(13,077)	(6,483)	(55,217)	(11,003)
Distributions reinvested	89,644	61,154	245,606	142,331
Class S | Common Stock
Distributions to common shareholders:
Net decrease in net assets resulting from distributions	(198,745)	(140,144)	(546,252)	(327,288)
Share transactions:
Proceeds from shares sold	708,441	601,002	1,601,265	3,406,722
Share transfers between classes	(13,077)	(6,483)	(55,217)	(11,003)
Distributions reinvested	89,644	61,154	245,606	142,331
Repurchased shares	(82,448)	(47,971)	(345,554)	(89,583)
Net increase (decrease) from share transactions	702,560	607,702	1,446,100	3,448,467
Net assets, beginning of period			6,947,313
Net assets, end of period	8,595,719	6,568,170	8,595,719	6,568,170
CLASS D
Share transactions:
Proceeds from shares sold	143,591	179,680	215,875	713,712
Share transfers between classes	(4,547)	(10,270)	(1,094,266)	(45,229)
Distributions reinvested	891	11,404	16,596	24,710
CLASS D | Common Stock
Distributions to common shareholders:
Net decrease in net assets resulting from distributions	(8,094)	(23,963)	(35,147)	(52,959)
Share transactions:
Proceeds from shares sold	143,591	179,680	215,875	713,712
Share transfers between classes	(4,547)	(10,270)	(1,094,266)	(45,229)
Distributions reinvested	891	11,404	16,596	24,710
Repurchased shares	0	(3,796)	(13,816)	(6,014)
Net increase (decrease) from share transactions	139,935	177,018	(875,611)	687,179
Net assets, beginning of period			1,199,819
Net assets, end of period	$ 341,579	$ 1,075,437	$ 341,579	$ 1,075,437