Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUE
Interest income	$ 42,022	$ 29,457	$ 5,551
Other	89,588	40,602	127,171
Total revenue	2,593,162	2,855,093	3,273,816
Interest expense	77,673	81,522	80,768
Net revenue	2,515,489	2,773,571	3,193,048
OPERATING EXPENSES
Compensation and benefits	1,946,010	1,656,451	1,895,859
Occupancy and equipment	131,117	122,251	128,040
Marketing and business development	99,357	83,103	42,755
Technology and information services	189,670	171,702	146,765
Professional services	89,308	69,535	77,702
Fund administration and outsourced services	110,878	109,978	130,502
Amortization and other acquisition-related costs	334	60	60
Provision (benefit) pursuant to tax receivable agreement	(43,894)	(1,209)	2,199
Other	72,666	44,852	45,318
Total operating expenses	2,595,446	2,256,723	2,469,200
OPERATING INCOME (LOSS)	(79,957)	516,848	723,848
Provision (benefit) for income taxes	(22,650)	124,365	181,303
NET INCOME (LOSS)	(57,307)	392,483	542,545
LESS - NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	18,172	34,966	14,481
NET INCOME (LOSS) ATTRIBUTABLE TO LAZARD LTD	$ (75,479)	$ 357,517	$ 528,064
WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING:
Basic (in shares)	88,993,985	95,664,129	106,035,808
Diluted (in shares)	88,993,985	100,997,674	113,674,699
Earnings Per Share [Abstract]
Basic (in usd per share)	$ (0.90)	$ 3.68	$ 4.90
Diluted (in usd per share)	$ (0.90)	$ 3.51	$ 4.63
Investment banking and other advisory fees
REVENUE
Revenue	$ 1,383,799	$ 1,659,079	$ 1,786,472
Asset management fees
REVENUE
Revenue	$ 1,077,753	$ 1,125,955	$ 1,354,622