Schedule I - Condensed Financial Information of Registrant (Parent Company Only) - Condensed Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUE
Total revenue	$ 2,593,162	$ 2,855,093	$ 3,273,816
OPERATING EXPENSES
Professional services	89,308	69,535	77,702
Other	72,666	44,852	45,318
Total operating expenses	2,595,446	2,256,723	2,469,200
NET INCOME (LOSS) ATTRIBUTABLE TO LAZARD LTD	(75,479)	357,517	528,064
Parent Company
REVENUE
Equity in earnings (losses) of subsidiaries	(181,720)	238,987	410,550
Interest and other income	112,418	120,733	119,412
Total revenue	(69,302)	359,720	529,962
OPERATING EXPENSES
Professional services	5,974	2,083	1,792
Other	203	120	106
Total operating expenses	6,177	2,203	1,898
NET INCOME (LOSS) ATTRIBUTABLE TO LAZARD LTD	$ (75,479)	$ 357,517	$ 528,064