Rialto Segment (Narrative) (Details)		12 Months Ended
		Nov. 30, 2017 USD ($) transaction		Nov. 30, 2016 USD ($) transaction		Nov. 30, 2015 USD ($)	Dec. 31, 2010 business	Jan. 19, 2018 USD ($) asset	Nov. 30, 2010
Segment Reporting Information [Line Items]
Assets		$ 18,745,034,000	[1]	$ 15,361,781,000	[1]	$ 14,419,509,000
Liabilities	[2]	10,758,902,000		8,150,214,000
Origination of loans		98,375,000		56,507,000		78,703,000
Distributions of earnings from unconsolidated entities		$ 137,669,000		101,965,000		$ 60,753,000
Senior Notes | 7.00% Senior Notes due 2018
Segment Reporting Information [Line Items]
Interest rate		7.00%
Rialto
Segment Reporting Information [Line Items]
Assets	[1]	$ 1,153,840,000		1,276,210,000
Liabilities	[2]	720,056,000		707,980,000
Borrowings under facilities		$ 625,081,000		622,335,000
Percentage interest in loans		75.00%
Maximum percentage of LLC equity units employees are eligible to receive as part of the carried interest incentive plan						40.00%
Investments held-to-maturity		$ 179,659,000		71,260,000
Loans held-for-investment, net		$ 1,933,000		111,608,000
Rialto | Senior Notes | 7.00% Senior Notes due 2018
Segment Reporting Information [Line Items]
Interest rate		7.00%
Senior notes and other debts payable		$ 349,400,000		348,700,000
Rialto | Warehouse Repurchase Facility
Segment Reporting Information [Line Items]
Borrowings under facilities		162,100,000		223,500,000
Borrowings under facilities that finance loan originations and securitization activities		162,100,000		180,200,000
Rialto | Rialto Mortgage Finance
Segment Reporting Information [Line Items]
Origination of loans		1,700,000,000		1,800,000,000
Loans sold		$ 1,500,000,000		$ 1,900,000,000
Number of securitizations | transaction		12		11
Receivables from securitization				$ 199,800,000
Rialto | Rialto Mortgage Finance | Accrual Loans
Segment Reporting Information [Line Items]
Origination of loans		$ 98,400,000		81,200,000
Rialto | Rialto Mortgage Finance | Loans held-for-sale
Segment Reporting Information [Line Items]
Origination of loans		1,600,000,000		1,700,000,000
Rialto | Real Estate Funds
Segment Reporting Information [Line Items]
Advanced distributions		7,300,000		10,100,000		$ 20,000,000
Rialto | Commercial Mortgage-Backed Securities
Segment Reporting Information [Line Items]
Investments held-to-maturity		$ 179,700,000		71,300,000
Vertical strip		5.00%
Number of transactions | transaction		3
Impairment charges				0		$ 0
Rialto | Commercial Mortgage-Backed Securities | Maximum
Segment Reporting Information [Line Items]
Discount rate		84.00%
Coupon rate		5.00%
Rialto | Commercial Mortgage-Backed Securities | Minimum
Segment Reporting Information [Line Items]
Discount rate		9.00%
Coupon rate		1.30%
Rialto | Rialto Real Estate Fund, LP
Segment Reporting Information [Line Items]
Distributions of earnings from unconsolidated entities		$ 36,800,000
Rialto | FDIC Portfolio | Variable Interest Entity, Primary Beneficiary
Segment Reporting Information [Line Items]
Cash		23,800,000
Assets		48,800,000		213,800,000
Liabilities		2,200,000		$ 10,300,000
Real estate owned - held-and-used, net		20,000,000
Loans held-for-investment, net		$ 1,600,000
Rialto | FDIC Portfolio
Segment Reporting Information [Line Items]
Managing member equity interests acquired									40.00%
Number of equity interests limited liability companies acquired | business							2
Subsequent Event | Rialto | FDIC Portfolio | Variable Interest Entity, Primary Beneficiary
Segment Reporting Information [Line Items]
Assets								$ 300,000
Number of assets | asset								4

[1] Under certain provisions of Accounting Standards Codification ("ASC") Topic 810, Consolidations, ("ASC 810") the Company is required to separately disclose on its consolidated balance sheets the assets of consolidated variable interest entities ("VIEs") that are owned by the consolidated VIEs and liabilities of consolidated VIEs as to which there is no recourse against the Company.As of November 30, 2017, total assets include $799.4 million related to consolidated VIEs of which $15.8 million is included in Lennar Homebuilding cash and cash equivalents, $0.2 million in Lennar Homebuilding receivables, net, $53.2 million in Lennar Homebuilding finished homes and construction in progress, $229.0 million in Lennar Homebuilding land and land under development, $393.3 million in Lennar Homebuilding consolidated inventory not owned, $4.6 million in Lennar Homebuilding investments in unconsolidated entities, $11.8 million in Lennar Homebuilding other assets, $48.8 million in Rialto assets and $42.7 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] As of November 30, 2017, total liabilities include $389.7 million related to consolidated VIEs as to which there was no recourse against the Company, of which $5.0 million is included in Lennar Homebuilding accounts payable, $380.7 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.8 million in Lennar Homebuilding other liabilities and $2.2 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, $10.3 million in Rialto liabilities.