COVER	6 Months Ended
	Jun. 30, 2024 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	333-126751
Entity Registrant Name	LAZARD GROUP LLC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0278097
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
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001326141
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Amendment Flag	false
Entity Common Stock, Shares Outstanding	0