Lennar Financial Services Segment (Schedule Of Assets And Liabilities) (Details) - USD ($) $ in Thousands		Feb. 28, 2018	Nov. 30, 2017	Feb. 28, 2017	Feb. 10, 2017	Nov. 30, 2016
Assets:
Cash and cash equivalents		$ 1,029,585	$ 2,650,872	$ 929,060		$ 1,329,529
Total assets	[1]	27,944,023	18,745,034
Liabilities:
Total liabilities	[2]	14,769,939	10,758,902
WCI Communities, Inc.
Assets:
Goodwill					$ 156,566
Lennar Financial Services
Assets:
Cash and cash equivalents		165,849	117,410
Restricted cash		11,251	12,006
Receivables, net		366,100	313,252
Lennar Financial Services loans held-for-sale		689,172	937,516
Loans held-for-investment, net		69,832	44,193
Investments held-to-maturity		60,831	52,327
Investments available-for-sale		57,768	57,439
Goodwill		210,628	59,838
Other		117,001	95,527
Total assets	[1]	1,748,432	1,689,508
Liabilities:
Notes and other debts payable		772,240	937,431
Other		232,762	240,383
Total liabilities	[2]	1,005,002	1,177,814
Self-insurance reserves		57,200	57,700
Lennar Financial Services | Servicing Contracts
Liabilities:
Mortgage servicing rights		36,800	31,200
Lennar Financial Services | Mortgage loan commitments
Liabilities:
Other asset		11,700	9,900
Lennar Financial Services | Forward Contracts
Liabilities:
Other asset			$ 1,700
Other liability		4,800
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 February 28, 2018, total assets include $864.8 million related to consolidated VIEs of which $7.6 million is included in Lennar Homebuilding cash and cash equivalents, $0.1 million in Lennar Homebuilding receivables, net, $45.4 million in Lennar Homebuilding finished homes and construction in progress, $308.8 million in Lennar Homebuilding land and land under development, $366.7 million in Lennar Homebuilding consolidated inventory not owned, $4.5 million in Lennar Homebuilding investments in unconsolidated entities, $11.7 million in Lennar Homebuilding other assets, $20.0 million in Rialto assets and $100.0 million in Lennar Multifamily assets. As of November 30, 2017, total assets include $799.4 million related to consolidated VIEs of which $15.8 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $53.2 million in Lennar Homebuilding finished homes and construction in progress, $229.0 million in Lennar Homebuilding land and land under development, $393.3 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $11.8 million in Lennar Homebuilding other assets, $48.8 million in Rialto assets and $42.7 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 February 28, 2018, total liabilities include $366.0 million related to consolidated VIEs as to which there was no recourse against the Company, of which $4.5 million is included in Lennar Homebuilding accounts payable, $11.1 million in Lennar Homebuilding senior notes and other debts payable, $347.0 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.5 million in Lennar Homebuilding other liabilities, $1.8 million in Rialto liabilities and $0.1 million in Lennar Multifamily liabilities. As of November 30, 2017, total liabilities include $389.7 million related to consolidated VIEs as to which there was no recourse against the Company, of which $5.0 million is included in Lennar Homebuilding accounts payable, $380.7 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.8 million in Lennar Homebuilding other liabilities and $2.2 million in Rialto liabilities.