CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 116,135	$ 6,774	$ 208,412	$ (128,801)
Currency translation adjustments:
Currency translation adjustments before reclassification	41,627	(19,935)	20,793	(2,946)
Adjustment for items reclassified to earnings	0	2,129	0	2,157
Employee benefit plans:
Actuarial gain (loss) (net of tax expense (benefit) of $(2,254) and $1,195 for the three months ended September 30, 2024 and 2023, respectively, and $(1,595) and $121 for the nine months ended September 30, 2024 and 2023, respectively)	(9,033)	5,054	(7,429)	(332)
Adjustment for items reclassified to earnings (net of tax expense of $545 and $374 for the three months ended September 30, 2024 and 2023, respectively, and $1,455 and $1,135 for the nine months ended September 30, 2024 and 2023, respectively)	1,888	1,580	4,775	3,916
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	34,482	(11,172)	18,139	2,795
COMPREHENSIVE INCOME (LOSS)	150,617	(4,398)	226,551	(126,006)
LESS - COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS	8,230	(364)	14,843	10,245
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO LAZARD	$ 142,387	$ (4,034)	$ 211,708	$ (136,251)