NET GAINS (LOSSES) FROM INVESTMENT ACTIVITIES (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	$ 497,346	$ 534,652	$ 38,316
Net Unrealized Gains (Losses)	2,664,538	720,180	889,828
Total	3,161,884	1,254,832	928,144
Private Equity
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	261,920	184,784	223,568
Net Unrealized Gains (Losses)	2,849,031	708,600	338,720
Total	3,110,951	893,384	562,288
Credit
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	(92,114)	(354,090)	(470,487)
Net Unrealized Gains (Losses)	(150,881)	(420,434)	423,603
Total	(242,995)	(774,524)	(46,884)
Investments of Consolidated CFEs
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	(57,230)	(83,719)	(97,129)
Net Unrealized Gains (Losses)	270,268	(452,331)	352
Total	213,038	(536,050)	(96,777)
Real Assets
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	93,848	92,885	(18,722)
Net Unrealized Gains (Losses)	(128,393)	67,999	218,728
Total	(34,545)	160,884	200,006
Equity Method - Other
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	70,385	(3,991)	34,190
Net Unrealized Gains (Losses)	540,775	339,027	95,968
Total	611,160	335,036	130,158
Other Investments
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	53,688	(239,081)	(796,348)
Net Unrealized Gains (Losses)	(240,548)	(434,537)	65,516
Total	(186,860)	(673,618)	(730,832)
Foreign Exchange Forward Contracts and Options
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	161,175	(90,625)	(31,772)
Net Unrealized Gains (Losses)	20,309	266,938	(342,849)
Total	181,484	176,313	(374,621)
Securities Sold Short
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	54,707	750,007	1,116,325
Net Unrealized Gains (Losses)	(53,483)	26,465	97,811
Total	1,224	776,472	1,214,136
Other Derivatives
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	(19,584)	(13,273)	(7,129)
Net Unrealized Gains (Losses)	(36,918)	1,037	(23,687)
Total	(56,502)	(12,236)	(30,816)
Debt Obligations and Other
Gain (Loss) on Securities [Line Items]
Net Realized Gains (Losses)	(29,449)	291,755	85,820
Net Unrealized Gains (Losses)	(405,622)	617,416	15,666
Total	$ (435,071)	$ 909,171	$ 101,486

Amount of realized and unrealized gain (loss) on investment.

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