Operating and Reporting Segments (Disclosure Of Financial Information Relating To Company's Operations) (Details) $ in Thousands		3 Months Ended		6 Months Ended
		May 31, 2017 USD ($) $ / homes	May 31, 2016 USD ($) $ / homes	May 31, 2017 USD ($) $ / homes	May 31, 2016 USD ($) $ / homes	Feb. 10, 2017 USD ($)	Nov. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Assets	[1]	$ 16,754,505		$ 16,754,505			$ 15,361,781
Revenues		3,261,892	$ 2,745,815	5,599,320	$ 4,739,479
Operating earnings (loss):
Operating earnings		376,374	383,641	486,716	633,002
Corporate general and administrative expenses		66,774	55,802	127,473	103,470
Earnings before income taxes		309,600	327,839	359,243	529,532
Sales incentives		$ 174,500	$ 146,100	$ 298,100	$ 249,800
Sales incentives per home delivered (in dollars per home) | $ / homes		22,700	21,800	22,700	21,700
WCI Communities, Inc.
Segment Reporting Information [Line Items]
Goodwill						$ 156,633
Homebuilding East | WCI Communities, Inc.
Segment Reporting Information [Line Items]
Goodwill		$ 136,600		$ 136,600
Rialto
Segment Reporting Information [Line Items]
Assets	[1]	1,364,421		1,364,421			1,276,210
Goodwill		5,396		5,396			5,396
Revenues		67,988	$ 44,838	149,994	$ 88,549
Lennar Financial Services
Segment Reporting Information [Line Items]
Assets	[1]	1,444,294		1,444,294			1,754,672
Goodwill		59,838		59,838			39,838
Revenues		208,363	175,940	356,406	299,896
Lennar Financial Services | WCI Communities, Inc.
Segment Reporting Information [Line Items]
Goodwill		20,000		20,000
Lennar Multifamily
Segment Reporting Information [Line Items]
Assets	[1]	653,229		653,229			526,131
Revenues		99,800	74,152	188,485	113,668
Lennar Homebuilding
Segment Reporting Information [Line Items]
Assets	[1]	13,292,561		13,292,561			11,804,768
Goodwill	[1]	136,633		136,633			0
Revenues		2,885,741	2,450,885	4,904,435	4,237,366
Operating earnings (loss):
Accrual for litigation		0	0	140,000	0
Operating Segments | Homebuilding East
Segment Reporting Information [Line Items]
Assets		4,764,611		4,764,611			3,512,990
Revenues		1,194,890	954,298	1,962,616	1,613,352
Operating earnings (loss):
Operating earnings		153,707	142,938	97,998	227,644
Accrual for litigation				140,000
Operating Segments | Homebuilding Central
Segment Reporting Information [Line Items]
Assets		2,032,627		2,032,627			1,993,403
Revenues		682,342	608,987	1,198,523	1,022,827
Operating earnings (loss):
Operating earnings		75,944	68,762	128,802	101,957
Operating Segments | Homebuilding West
Segment Reporting Information [Line Items]
Assets		4,684,956		4,684,956			4,318,924
Revenues		770,194	718,059	1,322,992	1,269,398
Operating earnings (loss):
Operating earnings		71,224	113,807	124,584	202,641
Operating Segments | Rialto
Segment Reporting Information [Line Items]
Assets		1,364,421		1,364,421			1,276,210
Revenues		67,988	44,838	149,994	88,549
Operating earnings (loss):
Operating earnings		(6,462)	(18,086)	(7,305)	(16,476)
Operating Segments | Lennar Financial Services
Segment Reporting Information [Line Items]
Assets		1,444,294		1,444,294			1,754,672
Revenues		208,363	175,940	356,406	299,896
Operating earnings (loss):
Operating earnings		43,727	44,088	64,391	59,019
Operating Segments | Lennar Multifamily
Segment Reporting Information [Line Items]
Assets		653,229		653,229			526,131
Revenues		99,800	74,152	188,485	113,668
Operating earnings (loss):
Operating earnings		6,529	14,943	25,712	27,125
Homebuilding Other
Segment Reporting Information [Line Items]
Assets		903,137		903,137			907,523
Revenues		238,315	169,541	420,304	331,789
Operating earnings (loss):
Operating earnings		31,705	$ 17,189	52,534	$ 31,092
Corporate and unallocated
Segment Reporting Information [Line Items]
Assets		$ 907,230		$ 907,230			$ 1,071,928

[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, 2017, total assets include $575.7 million related to consolidated VIEs of which $9.4 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $77.8 million in Lennar Homebuilding finished homes and construction in progress, $173.1 million in Lennar Homebuilding land and land under development, $138.6 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $12.9 million in Lennar Homebuilding other assets, $117.5 million in Rialto assets and $41.6 million in Lennar Multifamily assets. As of November 30, 2016, total assets include $536.3 million related to consolidated VIEs of which $13.3 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $54.2 million in Lennar Homebuilding finished homes and construction in progress, $106.3 million in Lennar Homebuilding land and land under development, $121.0 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $13.9 million in Lennar Homebuilding other assets, $213.8 million in Rialto assets and $8.8 million in Lennar Multifamily assets.