Document And Entity Information	3 Months Ended
	Feb. 28, 2018 shares
Class of Stock [Line Items]
Entity Registrant Name	LENNAR CORP /NEW/
Entity Central Index Key	0000920760
Current Fiscal Year End Date	--11-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Feb. 28, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Class A Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding	288,004,551
Class B Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding	37,679,938