Lennar Financial Services Segment (Schedule Of Assets And Liabilities) (Details) - USD ($) $ in Thousands		Aug. 31, 2017	Feb. 10, 2017	Nov. 30, 2016	Aug. 31, 2016	Nov. 30, 2015
Assets:
Cash and cash equivalents		$ 837,726		$ 1,329,529	$ 816,095	$ 1,158,445
Total assets	[1]	16,939,373		15,361,781
Liabilities:
Total liabilities	[2]	9,279,913		8,150,214
WCI Communities, Inc.
Assets:
Goodwill			$ 160,270
Lennar Financial Services
Assets:
Cash and cash equivalents		115,016		123,964
Restricted cash		14,152		17,053
Receivables, net		286,902		409,528
Lennar Financial Services loans held-for-sale		661,649		939,405
Loans held-for-investment, net		37,665		30,004
Investments held-to-maturity		53,631		41,991
Investments available-for-sale		57,784		53,570
Goodwill		59,838		39,838
Other		98,551		99,319
Total assets	[1]	1,385,188		1,754,672
Liabilities:
Notes and other debts payable		719,727		1,077,228
Other		230,371		241,055
Total liabilities	[2]	950,098		1,318,283
Self-insurance reserves		56,100		57,400
Lennar Financial Services | Servicing Contracts
Liabilities:
Mortgage servicing rights		27,700		23,900
Lennar Financial Services | Mortgage loan commitments
Liabilities:
Other asset		17,500		7,400
Lennar Financial Services | Forward Contracts
Liabilities:
Other asset				$ 26,500
Other liability		(5,500)
Lennar Financial Services | WCI Communities, Inc.
Assets:
Goodwill		$ 20,000

[1] Under certain provisions of Accounting Standards Codification ("ASC") Topic 810, Consolidations, ("ASC 810") the Company is required to separately disclose on its condensed consolidated balance sheets the assets owned by consolidated variable interest entities ("VIEs") and liabilities of consolidated VIEs as to which neither Lennar Corporation, or any of its subsidiaries, has any obligations.As of August 31, 2017, total assets include $812.9 million related to consolidated VIEs of which $9.7 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $81.3 million in Lennar Homebuilding finished homes and construction in progress, $189.6 million in Lennar Homebuilding land and land under development, $386.6 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $13.1 million in Lennar Homebuilding other assets, $85.8 million in Rialto assets and $42.0 million in Lennar Multifamily assets.As of November 30, 2016, total assets include $536.3 million related to consolidated VIEs of which $13.3 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $54.2 million in Lennar Homebuilding finished homes and construction in progress, $106.3 million in Lennar Homebuilding land and land under development, $121.0 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $13.9 million in Lennar Homebuilding other assets, $213.8 million in Rialto assets and $8.8 million in Lennar Multifamily assets.

[2] Under certain provisions of Accounting Standards Codification ("ASC") Topic 810, Consolidations, ("ASC 810") the Company is required to separately disclose on its condensed consolidated balance sheets the assets owned by consolidated variable interest entities ("VIEs") and liabilities of consolidated VIEs as to which neither Lennar Corporation, or any of its subsidiaries, has any obligations.As of August 31, 2017, total liabilities include $390.2 million related to consolidated VIEs as to which there was no recourse against the Company, of which $4.7 million is included in Lennar Homebuilding accounts payable, $381.7 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.1 million in Lennar Homebuilding other liabilities and $2.7 million in Rialto liabilities.As of November 30, 2016, total liabilities include $126.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $3.6 million is included in Lennar Homebuilding accounts payable, $110.0 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $2.5 million in Lennar Homebuilding other liabilities and $10.3 million in Rialto liabilities.