Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
		Nov. 27, 2017	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
Numerator:
Net earnings attributable to Lennar			$ 453,211	$ 249,165	$ 899,683	$ 500,890
Less: distributed earnings allocated to nonvested shares			105	88	319	290
Less: undistributed earnings allocated to nonvested shares			3,633	2,358	7,674	4,600
Numerator for basic earnings per share			449,473	246,719	891,690	496,000
Less: net amount attributable to noncontrolling interests in Rialto's Carried Interest Incentive Plan			347	294	796	845
Plus: interest on convertible senior notes			0	0	80	0
Plus: undistributed earnings allocated to convertible shares			0	0	6	0
Numerator for diluted earnings per share			$ 449,126	$ 246,425	$ 890,980	$ 495,155
Denominator:
Denominator for basic earnings per share-weighted average common shares outstanding (shares)			327,214,000	237,330,000	302,046,000	237,019,000
Effect of dilutive securities:
Share-based payments (shares)			23,000	1,000	57,000	1,000
Convertible senior notes (shares)			0	0	732,000	0
Denominator for diluted earnings per share-weighted average common shares outstanding (shares)			327,237,000	237,331,000	302,835,000	237,020,000
Basic earnings per share (in dollars per share)	[1]		$ 1.37	$ 1.04	$ 2.95	$ 2.09
Diluted earnings per share (in dollars per share)	[1]		$ 1.37	$ 1.04	$ 2.94	$ 2.09
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock dividends (in shares)		4,700,000
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			0	0	0	0

[1] Basic and diluted average shares outstanding and earnings per share calculations for the three and nine months ended August 31, 2017 have been adjusted to reflect 4.7 million of Class B shares distributed in the stock dividend on November 27, 2017.