Lennar Homebuilding Investments in Unconsolidated Entities (Statements Of Operations) (Details) $ in Thousands	3 Months Ended
	Feb. 28, 2018 USD ($) property	Feb. 28, 2017 USD ($) property
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ (2,431)	$ 12,335
Lennar Multifamily
Schedule of Equity Method Investments [Line Items]
Number of operating properties sold | property	1	2
Revenues	$ 23,952	$ 11,617
Other income	7,307	50,539
Net loss of unconsolidated entities	(536)	39,810
Equity in earnings (loss) from unconsolidated entities	2,742	23,147
Lennar Homebuilding
Schedule of Equity Method Investments [Line Items]
Revenues	68,872	46,136
Costs and expenses	108,424	79,066
Net loss of unconsolidated entities	(39,552)	(32,930)
Equity in earnings (loss) from unconsolidated entities	$ (14,287)	$ (11,534)