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Financial Instruments (Schedule Of Gains And Losses Of Financial Instruments) (Details) (Lennar Financial Services [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Loans Held-For-Sale [Member]
    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Loans held-for-sale $ (7,300)us-gaap_UnrealizedGainLossOnInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= len_LoansHeldForSaleMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember		 $ (1,240)us-gaap_UnrealizedGainLossOnInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= len_LoansHeldForSaleMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
Mortgage Loan Commitments [Member]
    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Mortgage loan commitments 6,279len_UnrealizedGainLossonMortgageLoanCommitments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_LoansAndFinanceReceivablesMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember		 2,794len_UnrealizedGainLossonMortgageLoanCommitments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_LoansAndFinanceReceivablesMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
Forward Contracts [Member]
    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Derivative instruments $ 7,521us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForwardContractsMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember		 $ (5,721)us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ForwardContractsMember
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember