DERIVATIVES - Net Gains (Losses) with Respect to Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ (14,406)	$ (22,654)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other	Other
Forward foreign currency exchange rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total return swaps and other	$ 1,331	$ 94
LFI and other similar deferred compensation arrangements
Derivative Instruments, Gain (Loss) [Line Items]
Total return swaps and other	(9,373)	(16,453)
Lazard Growth Acquisition Corp I Warrants [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total return swaps and other	0	115
Total return swaps and other
Derivative Instruments, Gain (Loss) [Line Items]
Total return swaps and other	$ (6,364)	$ (6,410)