Operating and Reporting Segments (Disclosure Of Financial Information Relating To Company's Operations) (Details) $ in Thousands		3 Months Ended		6 Months Ended
		May 31, 2019 USD ($) $ / homes	May 31, 2018 USD ($) $ / homes	May 31, 2019 USD ($) $ / homes	May 31, 2018 USD ($) $ / homes	Nov. 30, 2018 USD ($)	Feb. 12, 2018 USD ($)
Segment Reporting Information [Line Items]
Assets	[1]	$ 29,583,064		$ 29,583,064		$ 28,566,181
Revenues		5,562,890	$ 5,459,061	9,430,972	$ 8,439,852
Operating earnings (loss):
Operating earnings		559,399	390,810	878,523	660,238
Sales incentives		$ 338,100	$ 278,100	$ 560,400	$ 428,000
Sales incentives per home delivered (in dollars per home) | $ / homes		26,600	23,000	26,100	22,800
Loss on consolidation of previously unconsolidated entity				$ 48,874	$ 0
Gain on sale of strategic joint venture				10,865	164,880
Acquisition and integration costs related to CalAtlantic		$ 0	$ 23,875	0	128,070
CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							$ 3,300,000
Operating earnings (loss):
Acquisition and integration costs related to CalAtlantic			23,900		128,100
Homebuilding East | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							1,100,000
Homebuilding Central | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							495,000
Homebuilding Texas | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							342,200
Homebuilding West | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							1,400,000
Homebuilding
Segment Reporting Information [Line Items]
Assets	[1]	25,519,455		25,519,455		24,324,093
Goodwill	[1]	3,442,359		3,442,359		3,442,359
Revenues		5,195,599	5,063,997	8,819,320	7,726,090
Operating earnings (loss):
Operating earnings		581,789	$ 425,143	951,384	839,070
Homebuilding | Treasure Island Holdings
Operating earnings (loss):
Gain on sale of strategic joint venture					$ 164,900
Ownership interest in strategic joint venture			80.00%		80.00%
Homebuilding | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							3,305,792
Financial Services
Segment Reporting Information [Line Items]
Assets	[1]	2,468,263		2,468,263		2,778,910
Goodwill		215,516		215,516		237,688
Revenues		204,216	$ 249,710	347,527	$ 445,797
Financial Services | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							$ 175,400
Multifamily
Segment Reporting Information [Line Items]
Assets	[1]	1,046,196		1,046,196		874,219
Revenues		147,412	117,693	244,806	210,949
Lennar Other
Segment Reporting Information [Line Items]
Assets	[1]	549,150		549,150		588,959
Revenues		15,663	27,661	19,319	57,016
Operating Segments
Operating earnings (loss):
Operating earnings		(76,113)	(108,790)	(155,456)	(280,795)
Operating Segments | Homebuilding East
Segment Reporting Information [Line Items]
Assets		6,987,845		6,987,845		7,183,758
Revenues		1,737,342	1,566,743	2,964,155	2,479,706
Operating earnings (loss):
Operating earnings		210,464	153,893	345,847	255,222
Operating Segments | Homebuilding Central
Segment Reporting Information [Line Items]
Assets		2,782,430		2,782,430		2,522,799
Revenues		613,785	636,523	1,048,852	891,092
Operating earnings (loss):
Operating earnings		55,344	25,138	86,270	34,174
Operating Segments | Homebuilding Texas
Segment Reporting Information [Line Items]
Assets		2,449,590		2,449,590		2,311,760
Revenues		693,212	700,767	1,111,729	1,056,865
Operating earnings (loss):
Operating earnings		75,374	37,652	107,652	51,665
Operating Segments | Homebuilding West
Segment Reporting Information [Line Items]
Assets		10,954,282		10,954,282		10,291,385
Revenues		2,143,023	2,144,613	3,683,920	3,272,569
Operating earnings (loss):
Operating earnings		272,904	224,595	463,565	364,024
Operating Segments | Homebuilding Other
Segment Reporting Information [Line Items]
Assets		1,238,115		1,238,115		1,013,367
Revenues		8,237	15,351	10,664	25,858
Operating earnings (loss):
Operating earnings		(32,297)	(16,135)	(51,950)	133,985
Loss on consolidation of previously unconsolidated entity		48,900		48,900
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues		5,195,599	5,063,997	8,819,320	7,726,090
Operating earnings (loss):
Purchase accounting adjustments			236,800		291,900
Loss on consolidation of previously unconsolidated entity				48,900
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Assets		2,468,263		2,468,263		2,778,910
Revenues		204,216	249,709	347,527	445,796
Operating earnings (loss):
Operating earnings		56,217	55,774	75,189	81,636
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Assets		1,046,196		1,046,196		874,219
Revenues		147,412	117,693	244,806	210,949
Operating earnings (loss):
Operating earnings		(4,322)	14,788	2,475	13,587
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Assets		549,150		549,150		588,959
Revenues		15,663	27,662	19,319	57,017
Operating earnings (loss):
Operating earnings		1,828	$ 3,895	4,931	$ 6,740
Corporate and unallocated
Segment Reporting Information [Line Items]
Assets		$ 1,107,193		$ 1,107,193		$ 1,001,024

[1] Under certain provisions of Accounting Standards Codification ("ASC") Topic 810, Consolidations, ("ASC 810") the Company is required to separately disclose on its condensed consolidated balance sheets the assets owned by consolidated variable interest entities ("VIEs") and liabilities of consolidated VIEs as to which neither Lennar Corporation, or any of its subsidiaries, has any obligations. As of May 31, 2019, total assets include $1.4 billion related to consolidated VIEs of which $52.9 million is included in Homebuilding cash and cash equivalents, $103.3 million in Homebuilding receivables, net, $240.1 million in Homebuilding finished homes and construction in progress, $301.0 million in Homebuilding land and land under development, $394.7 million in Homebuilding consolidated inventory not owned, $4.1 million in Homebuilding investments in unconsolidated entities, $10.4 million in Homebuilding other assets, $187.2 million in Financial Services assets, $50.8 million in Multifamily assets and $7.2 million in Lennar Other assets. As of November 30, 2018, total assets include $666.2 million related to consolidated VIEs of which $57.6 million is included in Homebuilding cash and cash equivalents, $0.2 million in Homebuilding receivables, net, $81.7 million in Homebuilding finished homes and construction in progress, $293.1 million in Homebuilding land and land under development, $209.0 million in Homebuilding consolidated inventory not owned, $3.8 million in Homebuilding investments in unconsolidated entities, $10.5 million in Homebuilding other assets and $10.3 million in Lennar Other assets.