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Lennar Financial Services Segment (Narrative) (Details) (Lennar Financial Services [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Nov. 30, 2014
Lennar Financial Services [Member]
     
Segment Reporting Information [Line Items]      
Borrowings under the facilities $ 632,492us-gaap_LineOfCredit
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
  $ 698,448us-gaap_LineOfCredit
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
Collateralized mortgage loans and receivable loans sold to investors but not yet paid, principal balances 658,653us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
  732,134us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
Impaired financing receivable, average recorded investment $ 3,984us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember
$ 3,890us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_StatementBusinessSegmentsAxis
= len_LennarFinancialServicesMember