Document And Entity Information	6 Months Ended
	May 31, 2012	Jun. 30, 2012 Class A Common Stock [Member]	Jun. 30, 2012 Class B Common Stock [Member]
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	May 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		158,014,450	31,303,195