Financial Instruments (Narrative) (Details) $ in Thousands	3 Months Ended
	Feb. 29, 2016 USD ($) homes communities	Feb. 28, 2015 USD ($) homes communities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Open Commitments To Sell MBS | $	$ 1,156,000
Active communities | communities	681	625
Number of communities assessed for impairment | communities	28	19
Number of homesites assessed for impairment | homes	1,178	600
Lennar Homebuilding [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Finished homes and construction in progress carrying value before impairments | $	$ 169,802	$ 120,505
Fair Value, Inputs, Level 3 [Member] | Servicing Contracts [Member] | Lennar Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair Value Inputs, Prepayment Rate	14.80%
Fair Value Inputs, Discount Rate	12.20%
Fair Value Input, Delinquency Rate	7.90%