Variable Interest Entities (Estimated Maximum Exposure To Loss) (Details) - USD ($) $ in Thousands	Feb. 28, 2019	Nov. 30, 2018
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	$ 809,319	$ 787,499
Lennar’s Maximum Exposure to Loss	1,093,380	1,096,600
Homebuilding | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	106,450	123,064
Lennar’s Maximum Exposure to Loss	164,739	184,945
Obligations related to VIEs	50,200	54,800
Multifamily | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	471,357	463,534
Lennar’s Maximum Exposure to Loss	697,129	710,754
Multifamily | Variable Interest Entity, Not Primary Beneficiary | Equity Commitments
Variable Interest Entity [Line Items]
Obligations related to VIEs	218,200	237,000
Multifamily | Variable Interest Entity, Not Primary Beneficiary | Financial Standby Letters of Credit
Variable Interest Entity [Line Items]
Obligations related to VIEs	1,900	4,600
Financial Services
Variable Interest Entity [Line Items]
Investments held-to-maturity	210,806	189,472
Financial Services | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	167,363	136,982
Lennar’s Maximum Exposure to Loss	167,363	136,982
Investments held-to-maturity	167,400	137,000
Lennar Other
Variable Interest Entity [Line Items]
Investments held-to-maturity	60,204	59,974
Lennar Other | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated VIEs	64,149	63,919
Lennar’s Maximum Exposure to Loss	64,149	63,919
Investments held-to-maturity	$ 60,200	$ 60,000