Income Taxes (Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Nov. 30, 2017	Nov. 30, 2016
Segment Reporting Information [Line Items]
Net deferred tax assets	$ 297,695	$ 277,398
Lennar Homebuilding
Segment Reporting Information [Line Items]
Net deferred tax assets	279,900	249,714
Rialto
Segment Reporting Information [Line Items]
Net deferred tax assets	21,944	26,547
Lennar Financial Services
Segment Reporting Information [Line Items]
Net deferred tax assets	(1,176)	5,919
Lennar Multifamily
Segment Reporting Information [Line Items]
Net deferred tax assets		$ (4,782)
Net deferred tax liabilities	$ (2,973)