Operating and Reporting Segments (Disclosure Of Financial Information Relating To Company's Operations) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2019 USD ($) $ / homes	Aug. 31, 2018 USD ($) $ / homes	Aug. 31, 2019 USD ($) $ / homes	Aug. 31, 2018 USD ($) $ / homes	Nov. 30, 2018 USD ($)	Feb. 12, 2018 USD ($)
Segment Reporting Information [Line Items]
Assets	[1]	$ 29,459,447		$ 29,459,447		$ 28,566,181
Revenues		5,857,058	$ 5,672,569	15,288,030	$ 14,112,421
Operating earnings (loss):
Operating earnings		667,083	565,918	1,545,606	1,226,156
Sales incentives		$ 330,200	$ 289,000	$ 890,700	$ 717,000
Sales incentives per home delivered (in dollars per home) | $ / homes		24,400	22,900	25,400	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	$ 11,992	0	140,062
CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							$ 3,300,000
Operating earnings (loss):
Acquisition and integration costs related to CalAtlantic			12,000		140,100
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]	25,555,851		25,555,851		24,324,093
Goodwill	[1]	3,442,359		3,442,359		3,442,359
Revenues		5,438,998	5,285,742	14,258,318	13,011,832
Operating earnings (loss):
Operating earnings		658,982	$ 608,754	1,610,366	1,447,824
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]	2,329,786		2,329,786		2,778,910
Goodwill		215,516		215,516		237,688
Revenues		224,502	$ 258,208	572,029	$ 704,004
Financial Services | CalAtlantic Group, Inc.
Segment Reporting Information [Line Items]
Goodwill							$ 175,400
Multifamily
Segment Reporting Information [Line Items]
Assets	[1]	1,020,842		1,020,842		874,219
Revenues		183,958	101,064	428,764	312,013
Lennar Other
Segment Reporting Information [Line Items]
Assets	[1]	552,968		552,968		588,959
Revenues		9,600	27,555	28,919	84,572
Operating Segments
Operating earnings (loss):
Operating earnings		(92,615)	(108,338)	(248,071)	(389,133)
Operating Segments | Homebuilding East
Segment Reporting Information [Line Items]
Assets		6,996,012		6,996,012		7,183,758
Revenues		1,843,670	1,701,622	4,807,825	4,181,328
Operating earnings (loss):
Operating earnings		256,715	199,205	602,562	454,427
Operating Segments | Homebuilding Central
Segment Reporting Information [Line Items]
Assets		2,866,868		2,866,868		2,522,799
Revenues		724,753	670,908	1,773,605	1,562,000
Operating earnings (loss):
Operating earnings		79,209	69,018	165,479	103,192
Operating Segments | Homebuilding Texas
Segment Reporting Information [Line Items]
Assets		2,428,952		2,428,952		2,311,760
Revenues		713,376	729,150	1,825,105	1,786,015
Operating earnings (loss):
Operating earnings		78,298	70,742	185,950	122,407
Operating Segments | Homebuilding West
Segment Reporting Information [Line Items]
Assets		11,003,703		11,003,703		10,291,385
Revenues		2,063,323	2,174,564	5,747,243	5,447,133
Operating earnings (loss):
Operating earnings		259,424	292,050	722,989	656,074
Operating Segments | Homebuilding Other
Segment Reporting Information [Line Items]
Assets		1,202,051		1,202,051		1,013,367
Revenues		93,876	9,498	104,540	35,356
Operating earnings (loss):
Operating earnings		(14,664)	(22,261)	(66,614)	111,724
Loss on consolidation of previously unconsolidated entity				48,900
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues		5,438,998	5,285,742	14,258,318	13,011,832
Operating earnings (loss):
Purchase accounting adjustments			84,200		376,000
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Assets		2,329,786		2,329,786		2,778,910
Revenues		224,502	258,208	572,029	704,004
Operating earnings (loss):
Operating earnings		74,698	60,515	149,887	142,151
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Assets		1,020,842		1,020,842		874,219
Revenues		183,958	101,064	428,764	312,013
Operating earnings (loss):
Operating earnings		10,225	(3,853)	12,700	9,734
Operating Segments | Lennar Other
Segment Reporting Information [Line Items]
Assets		552,968		552,968		588,959
Revenues		9,600	27,555	28,919	84,572
Operating earnings (loss):
Operating earnings		15,793	$ 8,840	20,724	$ 15,580
Corporate and unallocated
Segment Reporting Information [Line Items]
Assets		$ 1,058,265		$ 1,058,265		$ 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 August 31, 2019, total assets include $1.0 billion related to consolidated VIEs of which $15.3 million is included in Homebuilding cash and cash equivalents, $0.2 million in Homebuilding receivables, net, $108.9 million in Homebuilding finished homes and construction in progress, $242.9 million in Homebuilding land and land under development, $352.1 million in Homebuilding consolidated inventory not owned, $4.1 million in Homebuilding investments in unconsolidated entities, $6.0 million in Homebuilding other assets, $222.0 million in Financial Services assets and $50.7 million in Multifamily 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.