INVESTMENTS - Schedule of Financial Information for the Company’s Equity Method Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments
Total assets	$ 24,884,308	$ 24,730,500
Total liabilities	17,485,922	19,709,151
Total equity	6,824,190	4,474,313	$ 3,798,618	$ 3,814,426
Total revenues	3,884,781	3,631,884	3,055,443
Expenses	(2,938,691)	(2,797,858)	(2,749,085)
Income tax expense	(164,617)	(172,971)	(71,891)
Net income (loss)	814,963
Equity Method Investment, Nonconsolidated Investee
Investments
Total investments	65,736,013	59,631,205
Total assets	70,922,581	62,765,300
Total liabilities	18,396,247	15,444,848
Total equity	52,526,334	47,320,452
Total revenues	3,583,038	3,756,681	2,234,911
Expenses	(2,033,810)	(2,067,667)	(1,241,148)
Net realized and unrealized gains (losses) from investments	1,643,477	614,489	(175,536)
Income tax expense	(42,779)	(15,963)	(41,143)
Net income (loss)	3,149,926	2,287,540	777,084
Equity Method Investment, Nonconsolidated Investee | Credit Group
Investments
Total investments	24,635,069	23,032,497
Total assets	27,987,915	24,694,682
Total liabilities	6,403,988	5,163,355
Total equity	21,583,927	19,531,327
Total revenues	2,357,057	2,584,262	1,552,306
Expenses	(893,272)	(862,257)	(515,535)
Net realized and unrealized gains (losses) from investments	556,170	525,776	(230,076)
Income tax expense	(5,884)	(28,334)	(5,870)
Net income (loss)	2,014,071	2,219,447	800,825
Equity Method Investment, Nonconsolidated Investee | Real Assets Group
Investments
Total investments	19,966,560	17,757,664
Total assets	21,368,342	18,792,446
Total liabilities	7,535,764	6,528,302
Total equity	13,832,578	12,264,144
Total revenues	1,018,717	1,036,710	618,796
Expenses	(564,678)	(632,433)	(357,845)
Net realized and unrealized gains (losses) from investments	382,681	(599,200)	304,068
Income tax expense	(9,341)	(10,197)	(36,501)
Net income (loss)	827,379	(205,120)	528,518
Equity Method Investment, Nonconsolidated Investee | Private Equity Group
Investments
Total investments	5,906,807	5,305,566
Total assets	5,897,152	5,431,332
Total liabilities	151,502	119,894
Total equity	5,745,650	5,311,438
Total revenues	196,756	133,749	60,935
Expenses	(67,667)	(88,841)	(76,527)
Net realized and unrealized gains (losses) from investments	496,096	322,165	(239,720)
Income tax expense	(27,554)	22,587	1,238
Net income (loss)	597,631	389,660	(254,074)
Equity Method Investment, Nonconsolidated Investee | Secondaries Group
Investments
Total investments	15,191,773	13,497,266
Total assets	15,632,653	13,808,556
Total liabilities	4,304,893	3,632,879
Total equity	11,327,760	10,175,677
Total revenues	10,508	1,960	2,874
Expenses	(507,192)	(482,478)	(289,741)
Net realized and unrealized gains (losses) from investments	208,947	373,064	(11,173)
Income tax expense	0	0	0
Net income (loss)	(287,737)	(107,454)	(298,040)
Equity Method Investment, Nonconsolidated Investee | Other
Investments
Total investments	35,804	38,212
Total assets	36,519	38,284
Total liabilities	100	418
Total equity	36,419	37,866
Total revenues	0	0	0
Expenses	(1,001)	(1,658)	(1,500)
Net realized and unrealized gains (losses) from investments	(417)	(7,316)	1,365
Income tax expense	0	(19)	(10)
Net income (loss)	$ (1,418)	$ (8,993)	$ (145)