Variable Interest Entities (Estimated Maximum Exposure To Loss) (Details) - USD ($) $ in Thousands	Feb. 28, 2017	Nov. 30, 2016
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	$ 593,958	$ 433,128
Lennar’s Maximum Exposure to Loss	935,537	785,157
Lennar Homebuilding | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	209,343	120,940
Lennar’s Maximum Exposure to Loss	280,602	164,804
Obligations related to VIEs	69,500	43,400
Rialto
Variable Interest Entity [Line Items]
Investments held-to-maturity	112,216	71,260
Rialto | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	112,216	71,260
Lennar’s Maximum Exposure to Loss	112,216	71,260
Investments held-to-maturity	112,200	71,300
Lennar Multifamily | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	272,399	240,928
Lennar’s Maximum Exposure to Loss	542,719	549,093
Lennar Multifamily | Variable Interest Entity, Not Primary Beneficiary | Equity Commitments
Variable Interest Entity [Line Items]
Obligations related to VIEs	254,300	288,200
Lennar Multifamily | Variable Interest Entity, Not Primary Beneficiary | Financial Standby Letters of Credit
Variable Interest Entity [Line Items]
Obligations related to VIEs	$ 15,100	$ 19,700