Supplemental Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Revenues:
Revenues		$ 5,562,890	$ 5,459,061	$ 9,430,972	$ 8,439,852
Cost and expenses:
Acquisition and integration costs related to CalAtlantic		0	23,875	0	128,070
Corporate general and administrative		76,113	84,915	155,456	152,725
Total costs and expenses		4,963,281	5,077,732	8,508,598	7,947,801
Equity in earnings (loss) from unconsolidated entities				(5,908)	(3,740)
Earnings before income taxes		559,399	390,810	878,523	660,238
Benefit (provision) for income taxes	[1]	(140,530)	(75,961)	(220,230)	(208,572)
Equity in earnings from subsidiaries			0	0	0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		418,869	314,849	658,293	451,666
Less: Net earnings (loss) attributable to noncontrolling interests		(2,603)	4,592	(3,089)	5,194
Net earnings attributable to Lennar		421,472	310,257	661,382	446,472
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		561	(589)	769	(1,247)
Reclassification adjustments for gains included in earnings, net of tax		(176)	(126)	(176)	(126)
Total other comprehensive income (loss), net of tax		385	(715)	593	(1,373)
Total comprehensive income attributable to Lennar		421,857	309,542	661,975	445,099
Total comprehensive income (loss) attributable to noncontrolling interests		(2,603)	4,592	(3,089)	5,194
Homebuilding
Revenues:
Revenues		5,195,599	5,063,997	8,819,320	7,726,090
Cost and expenses:
Cost and expenses		4,587,259	4,636,063	7,826,094	7,040,096
Equity in earnings (loss) from unconsolidated entities		19,614	(12,670)	5,858	(26,798)
Other income (expense), net		(46,165)	9,879	(47,700)	179,874
Financial Services
Revenues:
Revenues		204,216	249,710	347,527	445,797
Cost and expenses:
Cost and expenses		147,999	193,935	272,338	364,159
Multifamily
Revenues:
Revenues		147,412	117,693	244,806	210,949
Cost and expenses:
Cost and expenses		148,716	117,186	249,894	214,385
Equity in earnings (loss) from unconsolidated entities		(3,018)	14,281	7,563	17,023
Lennar Other
Revenues:
Revenues		15,663	27,661	19,319	57,016
Cost and expenses:
Cost and expenses		3,194	21,758	4,816	48,366
Equity in earnings (loss) from unconsolidated entities		(4,978)	4,560	3,352	13,515
Other income (expense), net		(5,663)	(6,569)	(12,924)	(15,427)
Earnings before income taxes					660,238
Reportable Legal Entities | Lennar Corporation
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Acquisition and integration costs related to CalAtlantic			0		0
Corporate general and administrative		74,321	82,962	151,850	148,885
Total costs and expenses		74,321	82,962	151,850	148,885
Earnings before income taxes		(74,543)	(78,984)	(152,480)
Benefit (provision) for income taxes		18,653	13,957	38,090	45,522
Equity in earnings from subsidiaries		477,362	375,284	775,772	543,922
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		421,472	310,257	661,382	446,472
Less: Net earnings (loss) attributable to noncontrolling interests		0	0	0	0
Net earnings attributable to Lennar		421,472	310,257	661,382	446,472
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0	0	0
Reclassification adjustments for gains included in earnings, net of tax		0	0	0	0
Total other comprehensive income (loss), net of tax		0	0	0	0
Total comprehensive income attributable to Lennar		421,472	310,257	661,382	446,472
Total comprehensive income (loss) attributable to noncontrolling interests		0	0	0	0
Reportable Legal Entities | Lennar Corporation | Homebuilding
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Other income (expense), net		(222)	3,978	(630)	5,913
Reportable Legal Entities | Lennar Corporation | Financial Services
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Reportable Legal Entities | Lennar Corporation | Multifamily
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Reportable Legal Entities | Lennar Corporation | Lennar Other
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Other income (expense), net		0	0	0	0
Earnings before income taxes					(142,972)
Reportable Legal Entities | Guarantor Subsidiaries
Revenues:
Revenues		5,211,642	5,123,026	8,874,600	7,849,232
Cost and expenses:
Acquisition and integration costs related to CalAtlantic			23,875		128,070
Corporate general and administrative		527	605	1,076	1,209
Total costs and expenses		4,582,591	4,711,666	7,847,447	7,284,745
Earnings before income taxes		595,799	405,849	974,208
Benefit (provision) for income taxes		(148,736)	(74,781)	(242,575)	(225,224)
Equity in earnings from subsidiaries		28,703	28,718	33,476	38,918
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		475,766	359,786	765,109	526,835
Less: Net earnings (loss) attributable to noncontrolling interests		0	0	0	0
Net earnings attributable to Lennar		475,766	359,786	765,109	526,835
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0	0	0
Reclassification adjustments for gains included in earnings, net of tax		0	0	0	0
Total other comprehensive income (loss), net of tax		0	0	0	0
Total comprehensive income attributable to Lennar		475,766	359,786	765,109	526,835
Total comprehensive income (loss) attributable to noncontrolling interests		0	0	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues		5,175,289	5,022,769	8,789,330	7,675,963
Cost and expenses:
Cost and expenses		4,561,235	4,597,434	7,787,164	6,991,238
Equity in earnings (loss) from unconsolidated entities		19,537	(12,789)	5,586	(26,761)
Other income (expense), net		(48,550)	6,889	(50,946)	175,252
Reportable Legal Entities | Guarantor Subsidiaries | Financial Services
Revenues:
Revenues		36,353	100,257	85,270	173,269
Cost and expenses:
Cost and expenses		20,829	89,752	59,207	164,228
Reportable Legal Entities | Guarantor Subsidiaries | Multifamily
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		(4,239)	444	(7,585)	285
Other income (expense), net		0	(55)	0	(122)
Earnings before income taxes					713,141
Reportable Legal Entities | Non-Guarantor Subsidiaries
Revenues:
Revenues		356,114	341,055	566,093	600,614
Cost and expenses:
Acquisition and integration costs related to CalAtlantic			0		0
Corporate general and administrative		0	0	0	0
Total costs and expenses		311,014	292,092	518,389	530,059
Earnings before income taxes		38,143	63,945	56,795
Benefit (provision) for income taxes		(10,447)	(15,137)	(15,745)	(28,870)
Equity in earnings from subsidiaries			0	0	0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		27,696	48,808	41,050	61,199
Less: Net earnings (loss) attributable to noncontrolling interests		(2,603)	4,592	(3,089)	5,194
Net earnings attributable to Lennar		30,299	44,216	44,139	56,005
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		561	(589)	769	(1,247)
Reclassification adjustments for gains included in earnings, net of tax		(176)	(126)	(176)	(126)
Total other comprehensive income (loss), net of tax		385	(715)	593	(1,373)
Total comprehensive income attributable to Lennar		30,684	43,501	44,732	54,632
Total comprehensive income (loss) attributable to noncontrolling interests		(2,603)	4,592	(3,089)	5,194
Reportable Legal Entities | Non-Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues		20,310	41,228	29,990	50,127
Cost and expenses:
Cost and expenses		19,594	39,352	31,901	51,615
Equity in earnings (loss) from unconsolidated entities		77	119	272	(37)
Other income (expense), net		2,386	2,980	3,243	4,603
Reportable Legal Entities | Non-Guarantor Subsidiaries | Financial Services
Revenues:
Revenues		172,729	154,473	271,978	282,522
Cost and expenses:
Cost and expenses		139,510	110,427	231,778	212,324
Reportable Legal Entities | Non-Guarantor Subsidiaries | Multifamily
Revenues:
Revenues		147,412	117,693	244,806	210,949
Cost and expenses:
Cost and expenses		148,716	117,186	249,894	214,385
Equity in earnings (loss) from unconsolidated entities		(3,018)	14,281	7,563	17,023
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues		15,663	27,661	19,319	57,016
Cost and expenses:
Cost and expenses		3,194	25,127	4,816	51,735
Equity in earnings (loss) from unconsolidated entities		(739)	4,116	10,937	13,230
Other income (expense), net		(5,663)	(6,514)	(12,924)	(15,305)
Earnings before income taxes					90,069
Consolidating Adjustments
Revenues:
Revenues		(4,866)	(5,020)	(9,721)	(9,994)
Cost and expenses:
Acquisition and integration costs related to CalAtlantic			0		0
Corporate general and administrative		1,265	1,348	2,530	2,631
Total costs and expenses		(4,645)	(8,988)	(9,088)	(15,888)
Earnings before income taxes		0	0	0
Benefit (provision) for income taxes		0	0	0	0
Equity in earnings from subsidiaries		(506,065)	(404,002)	(809,248)	(582,840)
Net earnings (including net earnings (loss) attributable to noncontrolling interests)		(506,065)	(404,002)	(809,248)	(582,840)
Less: Net earnings (loss) attributable to noncontrolling interests		0	0	0	0
Net earnings attributable to Lennar		(506,065)	(404,002)	(809,248)	(582,840)
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale		0	0	0	0
Reclassification adjustments for gains included in earnings, net of tax		0	0	0	0
Total other comprehensive income (loss), net of tax		0	0	0	0
Total comprehensive income attributable to Lennar		(506,065)	(404,002)	(809,248)	(582,840)
Total comprehensive income (loss) attributable to noncontrolling interests		0	0	0	0
Consolidating Adjustments | Homebuilding
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		6,430	(723)	7,029	(2,757)
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Other income (expense), net		221	(3,968)	633	(5,894)
Consolidating Adjustments | Financial Services
Revenues:
Revenues		(4,866)	(5,020)	(9,721)	(9,994)
Cost and expenses:
Cost and expenses		(12,340)	(6,244)	(18,647)	(12,393)
Consolidating Adjustments | Multifamily
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	0	0	0
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Consolidating Adjustments | Lennar Other
Revenues:
Revenues		0	0	0	0
Cost and expenses:
Cost and expenses		0	(3,369)	0	(3,369)
Equity in earnings (loss) from unconsolidated entities		0	0	0	0
Other income (expense), net		$ 0	$ 0	$ 0	0
Earnings before income taxes					$ 0

[1] Provision for income taxes for the six months ended May 31, 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.