Supplemental Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Revenues:
Revenues	$ 5,287,373	$ 5,562,890	$ 9,792,710	$ 9,430,972
Cost and expenses:
Corporate general and administrative	83,451	76,113	170,298	155,456
Total costs and expenses	4,629,538	4,963,281	8,705,457	8,508,598
Equity in earnings (loss) from unconsolidated entities			(40,355)	5,908
Financial Services gain on deconsolidation			61,418	0
Earnings before income taxes	676,577	559,399	1,100,129	878,523
Benefit (provision) for income taxes	(160,479)	(140,530)	(192,808)	(220,230)
Equity in earnings from subsidiaries		0	0	0
Net earnings (including net loss attributable to noncontrolling interests)	516,098	418,869	907,321	658,293
Less: Net earnings (loss) attributable to noncontrolling interests	(1,308)	(2,603)	(8,537)	(3,089)
Net earnings attributable to Lennar	517,406	421,472	915,858	661,382
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	(338)	561	(384)	769
Reclassification adjustments for gains included in earnings, net of tax	(452)	(176)	(452)	(176)
Total other comprehensive income (loss), net of tax	(790)	385	(836)	593
Total comprehensive income attributable to Lennar	516,616	421,857	915,022	661,975
Total comprehensive loss attributable to noncontrolling interests	(1,308)	(2,603)	(8,537)	(3,089)
Homebuilding
Revenues:
Revenues	4,949,484	5,195,599	9,121,600	8,819,320
Cost and expenses:
Cost and expenses	4,313,331	4,587,259	8,011,137	7,826,094
Equity in earnings (loss) from unconsolidated entities	(9,100)	19,614	(13,646)	5,858
Other income (expense), net	4,308	(46,165)	(5,058)	(47,700)
Financial Services
Revenues:
Revenues	196,263	204,216	394,924	347,527
Cost and expenses:
Cost and expenses	110,355	147,999	261,699	272,338
Financial Services gain on deconsolidation	61,418		61,418
Multifamily
Revenues:
Revenues	123,117	147,412	255,734	244,806
Cost and expenses:
Cost and expenses	123,473	148,716	260,821	249,894
Equity in earnings (loss) from unconsolidated entities	(282)	(3,018)	6,234	7,563
Lennar Other
Revenues:
Revenues	18,509	15,663	20,452	19,319
Cost and expenses:
Cost and expenses	(1,072)	3,194	1,502	4,816
Equity in earnings (loss) from unconsolidated entities	(26,642)	(4,978)	(26,523)	3,352
Other income (expense), net	(10,960)	(5,663)	(9,549)	(12,924)
Reportable Legal Entities | Lennar Corporation
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Corporate general and administrative	80,544	74,321	164,554	151,850
Total costs and expenses	80,544	74,321	164,554	151,850
Earnings before income taxes	(80,893)	(74,543)	(165,260)	(152,480)
Benefit (provision) for income taxes	22,411	18,653	28,739	38,090
Equity in earnings from subsidiaries	575,888	477,362	1,052,379	775,772
Net earnings (including net loss attributable to noncontrolling interests)	517,406	421,472	915,858	661,382
Less: Net earnings (loss) attributable to noncontrolling interests	0	0	0	0
Net earnings attributable to Lennar	517,406	421,472	915,858	661,382
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	517,406	421,472	915,858	661,382
Total comprehensive 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	(349)	(222)	(706)	(630)
Reportable Legal Entities | Lennar Corporation | Financial Services
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Cost and expenses	0	0	0	0
Financial Services gain on deconsolidation	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
Reportable Legal Entities | Guarantor Subsidiaries
Revenues:
Revenues	4,975,391	5,211,642	9,160,528	8,874,600
Cost and expenses:
Corporate general and administrative	1,641	527	3,213	1,076
Total costs and expenses	4,325,747	4,582,591	8,028,469	7,847,447
Earnings before income taxes	700,733	595,799	1,162,436	974,208
Benefit (provision) for income taxes	(165,874)	(148,736)	(191,711)	(242,575)
Equity in earnings from subsidiaries	56,130	28,703	80,835	33,476
Net earnings (including net loss attributable to noncontrolling interests)	590,989	475,766	1,051,560	765,109
Less: Net earnings (loss) attributable to noncontrolling interests	0	0	0	0
Net earnings attributable to Lennar	590,989	475,766	1,051,560	765,109
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	590,989	475,766	1,051,560	765,109
Total comprehensive loss attributable to noncontrolling interests	0	0	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues	4,939,857	5,175,289	9,096,000	8,789,330
Cost and expenses:
Cost and expenses	4,302,960	4,561,235	7,987,657	7,787,164
Equity in earnings (loss) from unconsolidated entities	(9,222)	19,537	(13,956)	5,586
Other income (expense), net	2,809	(48,550)	(8,239)	(50,946)
Reportable Legal Entities | Guarantor Subsidiaries | Financial Services
Revenues:
Revenues	35,534	36,353	64,528	85,270
Cost and expenses:
Cost and expenses	21,146	20,829	37,599	59,207
Financial Services gain on deconsolidation	61,418		61,418
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	(3,922)	(4,239)	(8,852)	(7,585)
Other income (expense), net	6	0	6	0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Revenues:
Revenues	317,965	356,114	644,151	566,093
Cost and expenses:
Corporate general and administrative	0	0	0	0
Total costs and expenses	228,881	311,014	523,697	518,389
Earnings before income taxes	56,737	38,143	102,953	56,795
Benefit (provision) for income taxes	(17,016)	(10,447)	(29,836)	(15,745)
Equity in earnings from subsidiaries		0	0	0
Net earnings (including net loss attributable to noncontrolling interests)	39,721	27,696	73,117	41,050
Less: Net earnings (loss) attributable to noncontrolling interests	(1,308)	(2,603)	(8,537)	(3,089)
Net earnings attributable to Lennar	41,029	30,299	81,654	44,139
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	(338)	561	(384)	769
Reclassification adjustments for gains included in earnings, net of tax	(452)	(176)	(452)	(176)
Total other comprehensive income (loss), net of tax	(790)	385	(836)	593
Total comprehensive income attributable to Lennar	40,239	30,684	80,818	44,732
Total comprehensive loss attributable to noncontrolling interests	(1,308)	(2,603)	(8,537)	(3,089)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues	9,627	20,310	25,600	29,990
Cost and expenses:
Cost and expenses	13,304	19,594	30,647	31,901
Equity in earnings (loss) from unconsolidated entities	122	77	310	272
Other income (expense), net	1,499	2,386	3,181	3,243
Reportable Legal Entities | Non-Guarantor Subsidiaries | Financial Services
Revenues:
Revenues	166,712	172,729	342,365	271,978
Cost and expenses:
Cost and expenses	93,176	139,510	230,727	231,778
Financial Services gain on deconsolidation	0		0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Multifamily
Revenues:
Revenues	123,117	147,412	255,734	244,806
Cost and expenses:
Cost and expenses	123,473	148,716	260,821	249,894
Equity in earnings (loss) from unconsolidated entities	(282)	(3,018)	6,234	7,563
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues	18,509	15,663	20,452	19,319
Cost and expenses:
Cost and expenses	(1,072)	3,194	1,502	4,816
Equity in earnings (loss) from unconsolidated entities	(22,720)	(739)	(17,671)	10,937
Other income (expense), net	(10,966)	(5,663)	(9,555)	(12,924)
Consolidating Adjustments
Revenues:
Revenues	(5,983)	(4,866)	(11,969)	(9,721)
Cost and expenses:
Corporate general and administrative	1,266	1,265	2,531	2,530
Total costs and expenses	(5,634)	(4,645)	(11,263)	(9,088)
Earnings before income taxes	0	0	0	0
Benefit (provision) for income taxes	0	0	0	0
Equity in earnings from subsidiaries	(632,018)	(506,065)	(1,133,214)	(809,248)
Net earnings (including net loss attributable to noncontrolling interests)	(632,018)	(506,065)	(1,133,214)	(809,248)
Less: Net earnings (loss) attributable to noncontrolling interests	0	0	0	0
Net earnings attributable to Lennar	(632,018)	(506,065)	(1,133,214)	(809,248)
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	(632,018)	(506,065)	(1,133,214)	(809,248)
Total comprehensive loss attributable to noncontrolling interests	0	0	0	0
Consolidating Adjustments | Homebuilding
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Cost and expenses	(2,933)	6,430	(7,167)	7,029
Equity in earnings (loss) from unconsolidated entities	0	0	0	0
Other income (expense), net	349	221	706	633
Consolidating Adjustments | Financial Services
Revenues:
Revenues	(5,983)	(4,866)	(11,969)	(9,721)
Cost and expenses:
Cost and expenses	(3,967)	(12,340)	(6,627)	(18,647)
Financial Services gain on deconsolidation	0		0
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	0	0	0
Equity in earnings (loss) from unconsolidated entities	0	0	0	0
Other income (expense), net	$ 0	$ 0	$ 0	$ 0