Financial Services Segment (Narrative) (Details)	3 Months Ended		9 Months Ended
	Aug. 31, 2019 USD ($)	Aug. 31, 2018 USD ($)	Aug. 31, 2019 USD ($) transaction	Aug. 31, 2018 USD ($) transaction	May 31, 2019 USD ($)	Nov. 30, 2018 USD ($)
Financial Services
Segment Reporting Information [Line Items]
Notes and other debts payable	$ 1,156,078,000		$ 1,156,078,000			$ 1,558,702,000
Outstanding principal balance	913,900,000		913,900,000			1,300,000,000
Investments held-to-maturity	193,268,000		193,268,000			189,472,000
Lennar Other
Segment Reporting Information [Line Items]
Origination of loans receivable			984,500,000	$ 997,500,000
Origination of loans receivable, held-for-sale			969,200,000
Origination of loans receivable, held-for-investment			15,300,000
Sale of loans held-for-sale			$ 848,300,000	$ 1,100,000,000
Number of securitization transactions | transaction			7	12
Unsettled transactions	$ 0		$ 0		$ 0
Collateralized interest in originated commercial loans financed	75.00%		75.00%
Investments held-to-maturity	$ 60,803,000		$ 60,803,000			59,974,000
Warehouse Repurchase Facility | Financial Services
Segment Reporting Information [Line Items]
Notes and other debts payable	887,800,000		887,800,000			1,300,000,000
Financing Agreement to Purchase Commercial Mortgage Backed Securities | Secured Debt | Lennar Other
Segment Reporting Information [Line Items]
Senior notes and other debts payable	$ 155,200,000		$ 155,200,000			$ 123,700,000
Financing Agreement to Purchase Commercial Mortgage Backed Securities | Secured Debt | Minimum | Lennar Other
Segment Reporting Information [Line Items]
Interest rate	3.20%		3.20%			4.10%
Warehouse Repurchase Facility | Lennar Other
Segment Reporting Information [Line Items]
Borrowings under loan originations and securitizations activities	$ 113,000,000.0		$ 113,000,000.0			$ 178,800,000
CMBS | Financial Services
Segment Reporting Information [Line Items]
Investments held-to-maturity	166,700,000		166,700,000			137,000,000.0
CMBS | Lennar Other
Segment Reporting Information [Line Items]
Senior notes and other debts payable	13,200,000		13,200,000			12,600,000
Investments held-to-maturity	60,800,000		60,800,000			$ 60,000,000.0	[1]
Impairment charges for CMBS securities	$ 0	$ 0	$ 0	$ 0
CMBS | Minimum | Financial Services
Segment Reporting Information [Line Items]
Discount rate as a percentage of face value for held-to-maturity securities			6.00%
Coupon rate for held-to-maturity securities			2.00%
CMBS | Minimum | Lennar Other
Segment Reporting Information [Line Items]
Discount rate as a percentage of face value for held-to-maturity securities			6.50%
Coupon rate for held-to-maturity securities			1.30%
CMBS | Maximum | Financial Services
Segment Reporting Information [Line Items]
Discount rate as a percentage of face value for held-to-maturity securities			84.00%
Coupon rate for held-to-maturity securities			5.30%
CMBS | Maximum | Lennar Other
Segment Reporting Information [Line Items]
Interest rate						4.20%
Discount rate as a percentage of face value for held-to-maturity securities			86.10%
Coupon rate for held-to-maturity securities			4.00%

[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.