Supplemental Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended
		Feb. 28, 2019	Feb. 28, 2018
Revenues:
Revenues		$ 3,868,082	$ 2,980,791
Cost and expenses:
Acquisition and integration costs related to CalAtlantic		0
Corporate general and administrative		79,343	67,810
Total costs and expenses		3,545,317	2,870,069
Equity in earnings (loss) from unconsolidated entities		(5,710)	(2,431)
Earnings before income taxes		319,124	269,428
Benefit (provision) for income taxes	[1]	(79,700)	(132,611)
Equity in earnings from subsidiaries			0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		239,424	136,817
Less: Net earnings (loss) attributable to noncontrolling interests		(486)	602
Net earnings attributable to Lennar		239,910	136,215
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		208	(658)
Total other comprehensive income (loss), net of tax		208	(658)
Total comprehensive income attributable to Lennar		240,118	135,557
Total comprehensive income (loss) attributable to noncontrolling interests		(486)	602
Homebuilding
Revenues:
Revenues		3,623,721	2,662,093
Cost and expenses:
Cost and expenses		3,238,835	2,404,033
Equity in earnings (loss) from unconsolidated entities		(13,756)	(14,128)
Other income (expense), net		(1,535)	169,995
Financial Services
Revenues:
Revenues		143,311	196,087
Cost and expenses:
Cost and expenses		124,339	170,225
Multifamily
Revenues:
Revenues		97,394	93,256
Cost and expenses:
Cost and expenses		101,178	97,199
Equity in earnings (loss) from unconsolidated entities		10,581	2,742
Lennar Other
Revenues:
Revenues		3,656	29,355
Cost and expenses:
Cost and expenses		1,622	26,607
Acquisition and integration costs related to CalAtlantic			104,195
Equity in earnings (loss) from unconsolidated entities		8,330	8,955
Other income (expense), net		(7,261)	(8,858)
Reportable Legal Entities | Lennar Corporation
Revenues:
Revenues		0	0
Cost and expenses:
Corporate general and administrative		77,529	65,923
Total costs and expenses		77,529	65,923
Earnings before income taxes		(77,937)	(63,988)
Benefit (provision) for income taxes		19,437	31,565
Equity in earnings from subsidiaries		298,410	168,638
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		239,910	136,215
Less: Net earnings (loss) attributable to noncontrolling interests		0	0
Net earnings attributable to Lennar		239,910	136,215
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0
Total other comprehensive income (loss), net of tax		0	0
Total comprehensive income attributable to Lennar		239,910	136,215
Total comprehensive income (loss) attributable to noncontrolling interests		0	0
Reportable Legal Entities | Lennar Corporation | Homebuilding
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Equity in earnings (loss) from unconsolidated entities		0	0
Other income (expense), net		(408)	1,935
Reportable Legal Entities | Lennar Corporation | Financial Services
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Reportable Legal Entities | Lennar Corporation | Multifamily
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Equity in earnings (loss) from unconsolidated entities		0	0
Reportable Legal Entities | Lennar Corporation | Lennar Other
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Acquisition and integration costs related to CalAtlantic			0
Equity in earnings (loss) from unconsolidated entities		0	0
Other income (expense), net		0	0
Reportable Legal Entities | Guarantor Subsidiaries
Revenues:
Revenues		3,662,958	2,726,206
Cost and expenses:
Corporate general and administrative		549	604
Total costs and expenses		3,264,856	2,573,079
Earnings before income taxes		378,409	307,292
Benefit (provision) for income taxes		(93,839)	(150,443)
Equity in earnings from subsidiaries		4,773	10,200
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		289,343	167,049
Less: Net earnings (loss) attributable to noncontrolling interests		0	0
Net earnings attributable to Lennar		289,343	167,049
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0
Total other comprehensive income (loss), net of tax		0	0
Total comprehensive income attributable to Lennar		289,343	167,049
Total comprehensive income (loss) attributable to noncontrolling interests		0	0
Reportable Legal Entities | Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues		3,614,041	2,653,194
Cost and expenses:
Cost and expenses		3,225,929	2,393,830
Equity in earnings (loss) from unconsolidated entities		(13,951)	(13,972)
Other income (expense), net		(2,396)	168,363
Reportable Legal Entities | Guarantor Subsidiaries | Financial Services
Revenues:
Revenues		48,917	73,012
Cost and expenses:
Cost and expenses		38,378	74,476
Reportable Legal Entities | Guarantor Subsidiaries | Multifamily
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Equity in earnings (loss) from unconsolidated entities		0	0
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	(26)
Acquisition and integration costs related to CalAtlantic			104,195
Equity in earnings (loss) from unconsolidated entities		(3,346)	(159)
Other income (expense), net		0	(67)
Reportable Legal Entities | Non-Guarantor Subsidiaries
Revenues:
Revenues		209,979	259,559
Cost and expenses:
Corporate general and administrative		0	0
Total costs and expenses		207,375	237,967
Earnings before income taxes		18,652	26,124
Benefit (provision) for income taxes		(5,298)	(13,733)
Equity in earnings from subsidiaries			0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		13,354	12,391
Less: Net earnings (loss) attributable to noncontrolling interests		(486)	602
Net earnings attributable to Lennar		13,840	11,789
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		208	(658)
Total other comprehensive income (loss), net of tax		208	(658)
Total comprehensive income attributable to Lennar		14,048	11,131
Total comprehensive income (loss) attributable to noncontrolling interests		(486)	602
Reportable Legal Entities | Non-Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues		9,680	8,899
Cost and expenses:
Cost and expenses		12,307	12,237
Equity in earnings (loss) from unconsolidated entities		195	(156)
Other income (expense), net		857	1,623
Reportable Legal Entities | Non-Guarantor Subsidiaries | Financial Services
Revenues:
Revenues		99,249	128,049
Cost and expenses:
Cost and expenses		92,268	101,898
Reportable Legal Entities | Non-Guarantor Subsidiaries | Multifamily
Revenues:
Revenues		97,394	93,256
Cost and expenses:
Cost and expenses		101,178	97,199
Equity in earnings (loss) from unconsolidated entities		10,581	2,742
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues		3,656	29,355
Cost and expenses:
Cost and expenses		1,622	26,633
Acquisition and integration costs related to CalAtlantic			0
Equity in earnings (loss) from unconsolidated entities		11,676	9,114
Other income (expense), net		(7,261)	(8,791)
Consolidating Adjustments
Revenues:
Revenues		(4,855)	(4,974)
Cost and expenses:
Corporate general and administrative		1,265	1,283
Total costs and expenses		(4,443)	(6,900)
Earnings before income taxes		0	0
Benefit (provision) for income taxes		0	0
Equity in earnings from subsidiaries		(303,183)	(178,838)
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		(303,183)	(178,838)
Less: Net earnings (loss) attributable to noncontrolling interests		0	0
Net earnings attributable to Lennar		(303,183)	(178,838)
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0
Total other comprehensive income (loss), net of tax		0	0
Total comprehensive income attributable to Lennar		(303,183)	(178,838)
Total comprehensive income (loss) attributable to noncontrolling interests		0	0
Consolidating Adjustments | Homebuilding
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		599	(2,034)
Equity in earnings (loss) from unconsolidated entities		0	0
Other income (expense), net		412	(1,926)
Consolidating Adjustments | Financial Services
Revenues:
Revenues		(4,855)	(4,974)
Cost and expenses:
Cost and expenses		(6,307)	(6,149)
Consolidating Adjustments | Multifamily
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Equity in earnings (loss) from unconsolidated entities		0	0
Consolidating Adjustments | Lennar Other
Revenues:
Revenues		0	0
Cost and expenses:
Cost and expenses		0	0
Acquisition and integration costs related to CalAtlantic			0
Equity in earnings (loss) from unconsolidated entities		0	0
Other income (expense), net		$ 0	$ 0

[1] Provision for income taxes for the three months ended February 28, 2018 includes a non-cash one-time write down of deferred tax assets of $68.6 million resulting from the Tax Cuts and Jobs Act enacted in December 2017.