Cover - shares	6 Months Ended
	Jun. 30, 2024	Jul. 19, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-32492
Entity Registrant Name	LAZARD, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	98-0437848
Entity Address, Address Line One	30 Rockefeller Plaza
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10112
City Area Code	212
Local Phone Number	632-6000
Title of each class	Common Stock
Trading Symbol	LAZ
Name of each exchange on which registered	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		112,766,091
Entity Central Index Key	0001311370
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Amendment Flag	false
Subsidiaries of Lazard Ltd
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		22,596,555