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Rialto Investments Segment Rialto Investments Segment (Equity in Earnings (Loss) on Investments) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Real Estate Investment Fund [Member]    
Schedule of Equity in Earnings (Loss) on Investments [Line Items]    
Equity in earnings (loss) from unconsolidated entities $ 746us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateInvestmentFundMember
$ 5,059us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateInvestmentFundMember
Real Estate Investment Fund II [Member]    
Schedule of Equity in Earnings (Loss) on Investments [Line Items]    
Equity in earnings (loss) from unconsolidated entities 893us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateInvestmentFundIiMember
38us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateInvestmentFundIiMember
Real Estate Mezanine Fund [Member]    
Schedule of Equity in Earnings (Loss) on Investments [Line Items]    
Equity in earnings (loss) from unconsolidated entities 475us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateMezanineFundMember
289us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_RealEstateMezanineFundMember
Other equity method investments [Member]    
Schedule of Equity in Earnings (Loss) on Investments [Line Items]    
Equity in earnings (loss) from unconsolidated entities 550us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_OtherequitymethodinvestmentsMember
(32)us-gaap_IncomeLossFromEquityMethodInvestments
/ invest_InvestmentAxis
= len_OtherequitymethodinvestmentsMember
Rialto [Member]    
Schedule of Equity in Earnings (Loss) on Investments [Line Items]    
Equity in earnings (loss) from unconsolidated entities $ 2,664us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= len_RialtoInvestmentsMember
$ 5,354us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= len_RialtoInvestmentsMember