Document And Entity Information	3 Months Ended
	Feb. 28, 2023 shares
Class of Stock [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Feb. 28, 2023
Document Transition Report	false
Entity File Number	1-11749
Entity Registrant Name	LENNAR CORP /NEW/
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4337490
Entity Address, Address Line One	5505 Blue Lagoon Drive
Entity Address, City or Town	Miami
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33126
City Area Code	305
Local Phone Number	559-4000
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
Current Fiscal Year End Date	--11-30
Entity Shell Company	false
Entity Central Index Key	0000920760
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Class A
Class of Stock [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $.10
Trading Symbol	LEN
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	253,773,163
Common Class B
Class of Stock [Line Items]
Title of 12(b) Security	Class B Common Stock, par value $.10
Trading Symbol	LEN.B
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	35,627,560