Supplemental Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands		Aug. 31, 2017		Nov. 30, 2016		Aug. 31, 2016	Nov. 30, 2015
Assets:
Total assets	[1]	$ 16,939,373		$ 15,361,781
LIABILITIES AND EQUITY
Total liabilities	[2]	9,279,913		8,150,214
Stockholders’ equity	[2]	7,554,260		7,026,042
Noncontrolling interests	[2]	105,200		185,525
Total equity		7,659,460	[2]	7,211,567	[2]	$ 6,762,906	$ 5,950,072
Total liabilities and equity	[2]	16,939,373		15,361,781
Lennar Homebuilding
Assets:
Cash and cash equivalents, restricted cash and receivables, net		660,282		1,163,091
Inventories		10,921,584		9,178,926
Investments in unconsolidated entities	[1]	1,016,588		811,723
Goodwill	[1]	140,270		0
Other assets	[1]	936,796		651,028
Investments in subsidiaries		0		0
Intercompany		0		0
Total assets	[1]	13,675,520		11,804,768
LIABILITIES AND EQUITY
Accounts payable and other liabilities		1,592,880		1,319,995
Liabilities related to consolidated inventory not owned	[2]	381,679		110,006
Senior notes and other debts payable	[2]	5,523,765		4,575,977
Intercompany		0		0
Total liabilities	[2]	7,498,324		6,005,978
Lennar Financial Services
Assets:
Goodwill		59,838		39,838
Other assets		98,551		99,319
Total assets	[1]	1,385,188		1,754,672
Lennar Financial Services loans held-for-sale		661,649		939,405
Lennar Financial Services all other assets				815,267
LIABILITIES AND EQUITY
Total liabilities	[2]	950,098		1,318,283
Rialto
Assets:
Investments in unconsolidated entities	[1]	249,551		245,741
Goodwill		5,396		5,396
Other assets		136,194		113,671
Total assets	[1]	1,195,407		1,276,210
Lennar Financial Services loans held-for-sale		304,984		126,947
LIABILITIES AND EQUITY
Total liabilities		703,329		707,980
Lennar Multifamily
Assets:
Investments in unconsolidated entities		397,119		318,559
Other assets		31,405		2,330
Total assets	[1]	683,258		526,131
LIABILITIES AND EQUITY
Accounts payable and other liabilities		128,162		117,973
Total liabilities	[2]	128,162		117,973
Reportable Legal Entities | Lennar Corporation
Assets:
Total assets		13,328,956		11,869,042
LIABILITIES AND EQUITY
Total liabilities		5,774,696		4,843,000
Stockholders’ equity		7,554,260		7,026,042
Noncontrolling interests		0		0
Total equity		7,554,260		7,026,042
Total liabilities and equity		13,328,956		11,869,042
Reportable Legal Entities | Lennar Corporation | Lennar Homebuilding
Assets:
Cash and cash equivalents, restricted cash and receivables, net		385,066		705,126
Inventories		0		0
Investments in unconsolidated entities		0		0
Goodwill		0
Other assets		247,684		227,267
Investments in subsidiaries		4,481,309		3,918,687
Intercompany		8,214,897		7,017,962
Total assets		13,328,956		11,869,042
LIABILITIES AND EQUITY
Accounts payable and other liabilities		556,909		473,103
Liabilities related to consolidated inventory not owned		0		0
Senior notes and other debts payable		5,217,787		4,369,897
Intercompany		0		0
Total liabilities		5,774,696		4,843,000
Reportable Legal Entities | Lennar Corporation | Lennar Financial Services
Assets:
Total assets		0
Lennar Financial Services loans held-for-sale				0
Lennar Financial Services all other assets				0
LIABILITIES AND EQUITY
Total liabilities		0		0
Reportable Legal Entities | Lennar Corporation | Rialto
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities		0		0
Reportable Legal Entities | Lennar Corporation | Lennar Multifamily
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities		0		0
Reportable Legal Entities | Guarantor Subsidiaries
Assets:
Total assets		12,799,588		10,712,547
LIABILITIES AND EQUITY
Total liabilities		8,639,200		7,105,711
Stockholders’ equity		4,160,388		3,606,836
Noncontrolling interests		0		0
Total equity		4,160,388		3,606,836
Total liabilities and equity		12,799,588		10,712,547
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Homebuilding
Assets:
Cash and cash equivalents, restricted cash and receivables, net		258,646		436,090
Inventories		10,625,325		8,901,874
Investments in unconsolidated entities		999,819		793,840
Goodwill		140,270
Other assets		597,581		346,865
Investments in subsidiaries		52,454		130,878
Intercompany		0		0
Total assets		12,674,095		10,609,547
LIABILITIES AND EQUITY
Accounts payable and other liabilities		918,602		778,249
Liabilities related to consolidated inventory not owned		368,179		13,582
Senior notes and other debts payable		280,249		203,572
Intercompany		7,032,364		6,071,778
Total liabilities		8,599,394		7,067,181
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Financial Services
Assets:
Total assets		125,493
Lennar Financial Services all other assets				103,000
LIABILITIES AND EQUITY
Total liabilities		39,806		38,530
Reportable Legal Entities | Guarantor Subsidiaries | Rialto
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities		0		0
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Multifamily
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities				0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Assets:
Total assets		3,578,741		3,858,538
LIABILITIES AND EQUITY
Total liabilities		3,100,166		3,230,284
Stockholders’ equity		373,375		442,729
Noncontrolling interests		105,200		185,525
Total equity		478,575		628,254
Total liabilities and equity		3,578,741		3,858,538
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Homebuilding
Assets:
Cash and cash equivalents, restricted cash and receivables, net		16,570		21,875
Inventories		296,259		277,052
Investments in unconsolidated entities		16,769		17,883
Other assets		108,265		84,224
Investments in subsidiaries		0		0
Intercompany		0		0
Total assets		437,863		401,034
LIABILITIES AND EQUITY
Accounts payable and other liabilities		136,621		79,462
Liabilities related to consolidated inventory not owned		13,500		96,424
Senior notes and other debts payable		25,729		2,508
Intercompany		1,182,533		946,184
Total liabilities		1,358,383		1,124,578
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Financial Services
Assets:
Total assets		1,262,213
Lennar Financial Services loans held-for-sale				939,405
Lennar Financial Services all other assets				715,758
LIABILITIES AND EQUITY
Total liabilities		910,292		1,279,753
Reportable Legal Entities | Non-Guarantor Subsidiaries | Rialto
Assets:
Total assets		1,195,407		1,276,210
LIABILITIES AND EQUITY
Total liabilities		703,329		707,980
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Multifamily
Assets:
Total assets		683,258		526,131
LIABILITIES AND EQUITY
Total liabilities		128,162		117,973
Consolidating Adjustments
Assets:
Total assets		(12,767,912)		(11,078,346)
LIABILITIES AND EQUITY
Total liabilities		(8,234,149)		(7,028,781)
Stockholders’ equity		(4,533,763)		(4,049,565)
Noncontrolling interests		0		0
Total equity		(4,533,763)		(4,049,565)
Total liabilities and equity		(12,767,912)		(11,078,346)
Consolidating Adjustments | Lennar Homebuilding
Assets:
Cash and cash equivalents, restricted cash and receivables, net		0		0
Inventories		0		0
Investments in unconsolidated entities		0		0
Goodwill		0
Other assets		(16,734)		(7,328)
Investments in subsidiaries		(4,533,763)		(4,049,565)
Intercompany		(8,214,897)		(7,017,962)
Total assets		(12,765,394)		(11,074,855)
LIABILITIES AND EQUITY
Accounts payable and other liabilities		(19,252)		(10,819)
Liabilities related to consolidated inventory not owned		0		0
Senior notes and other debts payable		0		0
Intercompany		(8,214,897)		(7,017,962)
Total liabilities		(8,234,149)		(7,028,781)
Consolidating Adjustments | Lennar Financial Services
Assets:
Total assets		(2,518)
Lennar Financial Services all other assets				(3,491)
LIABILITIES AND EQUITY
Total liabilities		0		0
Consolidating Adjustments | Rialto
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities		0		0
Consolidating Adjustments | Lennar Multifamily
Assets:
Total assets		0		0
LIABILITIES AND EQUITY
Total liabilities		$ 0		$ 0

[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, 2017, total assets include $812.9 million related to consolidated VIEs of which $9.7 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $81.3 million in Lennar Homebuilding finished homes and construction in progress, $189.6 million in Lennar Homebuilding land and land under development, $386.6 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $13.1 million in Lennar Homebuilding other assets, $85.8 million in Rialto assets and $42.0 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.

[2] 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, 2017, total liabilities include $390.2 million related to consolidated VIEs as to which there was no recourse against the Company, of which $4.7 million is included in Lennar Homebuilding accounts payable, $381.7 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.1 million in Lennar Homebuilding other liabilities and $2.7 million in Rialto liabilities.As of November 30, 2016, total liabilities include $126.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $3.6 million is included in Lennar Homebuilding accounts payable, $110.0 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $2.5 million in Lennar Homebuilding other liabilities and $10.3 million in Rialto liabilities.