Supplemental Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Revenues:
Revenues	$ 3,261,892	$ 2,745,815	$ 5,599,320	$ 4,739,479
Cost and expenses:
Corporate general and administrative	66,774	55,802	127,473	103,470
Total costs and expenses	2,928,667	2,423,362	5,077,868	4,238,187
Equity in earnings (loss) from unconsolidated entities			5,986	35,422
Earnings before income taxes	309,600	327,839	359,243	529,532
Benefit (provision) for income taxes	(108,892)	(103,801)	(128,861)	(160,042)
Equity in earnings from subsidiaries		0	0	0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	200,708	224,038	230,382	369,490
Less: Net earnings (loss) attributable to noncontrolling interests	(12,937)	5,569	(21,343)	6,941
Net earnings attributable to Lennar	213,645	218,469	251,725	362,549
Other comprehensive income, net of tax:
Net unrealized gains on securities available-for-sale	419	919	1,391	482
Reclassification adjustments for (gains) loss included in earnings, net of tax	4	(6)	4	(6)
Other comprehensive income attributable to Lennar	214,068	219,382	253,120	363,025
Other comprehensive income (loss) attributable to noncontrolling interests	(12,937)	5,569	(21,343)	6,941
Lennar Homebuilding
Revenues:
Revenues	2,885,741	2,450,885	4,904,435	4,237,366
Cost and expenses:
Cost and expenses	2,535,483	2,112,288	4,337,044	3,680,493
Equity in earnings (loss) from unconsolidated entities	(21,506)	(9,633)	(33,040)	(6,633)
Other income (expense), net	3,828	13,732	9,567	13,094
Loss due to litigation accrual	0	0	(140,000)	0
Lennar Financial Services
Revenues:
Revenues	208,363	175,940	356,406	299,896
Cost and expenses:
Cost and expenses	164,636	131,852	292,015	240,877
Rialto
Revenues:
Revenues	67,988	44,838	149,994	88,549
Cost and expenses:
Cost and expenses	59,076	50,203	125,989	93,110
Equity in earnings (loss) from unconsolidated entities	5,730	6,864	6,452	8,361
Other income (expense), net	(21,104)	(19,585)	(37,762)	(20,276)
Lennar Multifamily
Revenues:
Revenues	99,800	74,152	188,485	113,668
Cost and expenses:
Cost and expenses	102,698	73,217	195,347	120,237
Equity in earnings (loss) from unconsolidated entities	9,427	14,008	32,574	33,694
Reportable Legal Entities | Lennar Corporation
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Corporate general and administrative	65,217	54,282	124,396	100,430
Total costs and expenses	65,217	54,282	124,396	100,430
Earnings before income taxes	(65,397)	(55,014)	(124,827)	(101,436)
Benefit (provision) for income taxes	21,822	18,025	42,266	31,060
Equity in earnings from subsidiaries	257,220	255,458	334,286	432,925
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	213,645	218,469	251,725	362,549
Less: Net earnings (loss) attributable to noncontrolling interests	0		0	0
Net earnings attributable to Lennar	213,645	218,469	251,725	362,549
Other comprehensive income, net of tax:
Net unrealized gains on securities available-for-sale	0	0	0	0
Reclassification adjustments for (gains) loss included in earnings, net of tax	0	0	0	0
Other comprehensive income attributable to Lennar	213,645	218,469	251,725	362,549
Other comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Reportable Legal Entities | Lennar Corporation | Lennar 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	(180)	(732)	(431)	(1,006)
Loss due to litigation accrual			0
Reportable Legal Entities | Lennar Corporation | Lennar Financial Services
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Cost and expenses	0	0	0	0
Reportable Legal Entities | Lennar Corporation | Rialto
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 | Lennar Corporation | Lennar 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
Revenues:
Revenues	2,962,208	2,504,195	5,025,599	4,331,286
Cost and expenses:
Corporate general and administrative	291	254	546	509
Total costs and expenses	2,603,040	2,174,870	4,446,361	3,773,103
Earnings before income taxes	339,580	341,088	412,863	564,122
Benefit (provision) for income taxes	(112,372)	(108,653)	(135,716)	(170,363)
Equity in earnings from subsidiaries	21,415	15,458	28,308	19,996
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	248,623	247,893	305,455	413,755
Less: Net earnings (loss) attributable to noncontrolling interests	0		0	0
Net earnings attributable to Lennar	248,623	247,893	305,455	413,755
Other comprehensive income, net of tax:
Net unrealized gains on securities available-for-sale	0	0	0	0
Reclassification adjustments for (gains) loss included in earnings, net of tax	0	0	0	0
Other comprehensive income attributable to Lennar	248,623	247,893	305,455	413,755
Other comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Homebuilding
Revenues:
Revenues	2,875,612	2,450,885	4,888,494	4,237,366
Cost and expenses:
Cost and expenses	2,525,007	2,126,412	4,319,017	3,682,578
Equity in earnings (loss) from unconsolidated entities	(21,468)	(10,860)	(33,028)	(7,011)
Other income (expense), net	1,880	22,623	6,653	12,950
Loss due to litigation accrual			(140,000)
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Financial Services
Revenues:
Revenues	86,596	53,310	137,105	93,920
Cost and expenses:
Cost and expenses	77,742	48,204	126,798	90,016
Reportable Legal Entities | Guarantor Subsidiaries | Rialto
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 | Lennar 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 | Non-Guarantor Subsidiaries
Revenues:
Revenues	304,719	246,651	583,786	418,233
Cost and expenses:
Corporate general and administrative	0	0	0	0
Total costs and expenses	265,255	198,501	516,725	373,670
Earnings before income taxes	35,417	41,765	71,207	66,846
Benefit (provision) for income taxes	(18,342)	(13,173)	(35,411)	(20,739)
Equity in earnings from subsidiaries		0	0	0
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	17,075	28,592	35,796	46,107
Less: Net earnings (loss) attributable to noncontrolling interests	(12,937)	5,569	(21,343)	6,941
Net earnings attributable to Lennar	30,012	23,023	57,139	39,166
Other comprehensive income, net of tax:
Net unrealized gains on securities available-for-sale	419	919	1,391	482
Reclassification adjustments for (gains) loss included in earnings, net of tax	4	(6)	4	(6)
Other comprehensive income attributable to Lennar	30,435	23,936	58,534	39,642
Other comprehensive income (loss) attributable to noncontrolling interests	(12,937)	5,569	(21,343)	6,941
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Homebuilding
Revenues:
Revenues	10,129	0	15,941	0
Cost and expenses:
Cost and expenses	10,718	(6,231)	18,586	8,632
Equity in earnings (loss) from unconsolidated entities	(38)	1,227	(12)	378
Other income (expense), net	1,938	(8,899)	2,894	126
Loss due to litigation accrual			0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Financial Services
Revenues:
Revenues	126,767	127,642	229,299	215,984
Cost and expenses:
Cost and expenses	92,673	81,255	176,661	151,324
Reportable Legal Entities | Non-Guarantor Subsidiaries | Rialto
Revenues:
Revenues	67,988	44,838	149,994	88,549
Cost and expenses:
Cost and expenses	59,166	50,260	126,131	93,477
Equity in earnings (loss) from unconsolidated entities	5,730	6,864	6,452	8,361
Other income (expense), net	(21,104)	(19,585)	(37,762)	(20,276)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Multifamily
Revenues:
Revenues	99,835	74,171	188,552	113,700
Cost and expenses:
Cost and expenses	102,698	73,217	195,347	120,237
Equity in earnings (loss) from unconsolidated entities	9,427	14,008	32,574	33,694
Consolidating Adjustments
Revenues:
Revenues	(5,035)	(5,031)	(10,065)	(10,040)
Cost and expenses:
Corporate general and administrative	1,266	1,266	2,531	2,531
Total costs and expenses	(4,845)	(4,291)	(9,614)	(9,016)
Earnings before income taxes	0	0	0	0
Benefit (provision) for income taxes	0	0	0	0
Equity in earnings from subsidiaries	(278,635)	(270,916)	(362,594)	(452,921)
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(278,635)	(270,916)	(362,594)	(452,921)
Less: Net earnings (loss) attributable to noncontrolling interests	0		0	0
Net earnings attributable to Lennar	(278,635)	(270,916)	(362,594)	(452,921)
Other comprehensive income, net of tax:
Net unrealized gains on securities available-for-sale	0	0	0	0
Reclassification adjustments for (gains) loss included in earnings, net of tax	0	0	0	0
Other comprehensive income attributable to Lennar	(278,635)	(270,916)	(362,594)	(452,921)
Other comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Consolidating Adjustments | Lennar Homebuilding
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Cost and expenses	(242)	(7,893)	(559)	(10,717)
Equity in earnings (loss) from unconsolidated entities	0	0	0	0
Other income (expense), net	190	740	451	1,024
Loss due to litigation accrual			0
Consolidating Adjustments | Lennar Financial Services
Revenues:
Revenues	(5,000)	(5,012)	(9,998)	(10,008)
Cost and expenses:
Cost and expenses	(5,779)	2,393	(11,444)	(463)
Consolidating Adjustments | Rialto
Revenues:
Revenues	0	0	0	0
Cost and expenses:
Cost and expenses	(90)	(57)	(142)	(367)
Equity in earnings (loss) from unconsolidated entities	0	0	0	0
Other income (expense), net	0	0	0	0
Consolidating Adjustments | Lennar Multifamily
Revenues:
Revenues	(35)	(19)	(67)	(32)
Cost and expenses:
Cost and expenses	0	0	0	0
Equity in earnings (loss) from unconsolidated entities	$ 0	$ 0	$ 0	$ 0