XML 14 R1.htm IDEA: XBRL DOCUMENT v3.23.3
Cover - shares
 9 Months Ended
Sep. 30, 2023
Oct. 20, 2023
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2023  
Document Transition Report false  
Entity File Number 001-32492  
Entity Registrant Name LAZARD LTD  
Entity Incorporation, State or Country Code D0  
Entity Tax Identification Number 98-0437848  
Entity Address, Address Line One Clarendon House  
Entity Address, Address Line Two 2 Church Street  
Entity Address, City or Town Hamilton  
Entity Address, Postal Zip Code HM11  
Entity Address, Country BM  
City Area Code 441  
Local Phone Number 295-1422  
Title of each class Class A 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 Q3  
Document Fiscal Year Focus 2023  
Amendment Flag false  
Subsidiaries of Lazard Ltd    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   25,351,221