Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Numerator:
Net earnings attributable to Lennar	$ 249,165	$ 235,842	$ 500,890	$ 598,391
Less: distributed earnings allocated to nonvested shares	88	81	290	256
Less: undistributed earnings allocated to nonvested shares	2,358	2,232	4,600	5,798
Numerator for basic earnings per share	246,719	233,529	496,000	592,337
Less: net amount attributable to noncontrolling interests in Rialto's Carried Interest Incentive Plan	294	258	845	864
Plus: interest on 3.25% convertible senior notes due 2021	0	964	0	4,836
Plus: undistributed earnings allocated to convertible shares	0	2,232	0	5,797
Less: undistributed earnings reallocated to convertible shares	0	2,162	0	5,484
Numerator for diluted earnings per share	$ 246,425	$ 234,305	$ 495,155	$ 596,622
Denominator:
Denominator for basic earnings per share-weighted average common shares outstanding (shares)	232,673	223,549	232,361	215,814
Effect of dilutive securities:
Share-based payments (shares)	1	3	2	4
Convertible senior notes (shares)	0	8,266	0	14,399
Denominator for diluted earnings per share-weighted average common shares outstanding (shares)	232,674	231,818	232,363	230,217
Basic earnings per share (in dollars per share)	$ 1.06	$ 1.04	$ 2.13	$ 2.74
Diluted earnings per share (in dollars per share)	$ 1.06	$ 1.01	$ 2.13	$ 2.59
Senior Notes | 3.25% convertible senior notes due 2021
Debt Instrument [Line Items]
Interest rate	3.25%		3.25%