Summary Of Significant Accounting Policies (Narrative) (Details)		1 Months Ended	3 Months Ended		12 Months Ended
		Feb. 28, 2010 USD ($)	Nov. 30, 2015 USD ($) communities homes	Nov. 30, 2014 USD ($) communities homes	Nov. 30, 2015 USD ($) communities	Nov. 30, 2014 USD ($) communities	Nov. 30, 2013 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Advertising expense					$ 47,868,000	$ 45,203,000	$ 31,872,000
Maximum number of years from date of grant that option can expire					10 years
Cash held in escrow			$ 414,917,000	$ 263,174,000	$ 414,917,000	$ 263,174,000
Escrow deposit period					3 days
Active communities | communities			662	622	662	622
Number of communities assessed for impairment | communities			13	26
Number of homesites assessed for impairment | homes			931	1,774
Number of homesites impaired | homes			209	120
Number of communities impaired | communities				1	5
Write Offs Of Option Deposits And Preacquisition Costs					$ 3,147,000	$ 4,613,000	1,858,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]		$ 39,000	$ 130,000	39,000	130,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax					(65,000)	130,000	0
Trading securities			0	0	0	0
Interest incurred					288,516,000	273,448,000	261,503,000
Interest capitalized					276,062,000	236,897,000	$ 167,590,000
Deferred tax assets, valuation allowance			5,945,000	8,029,000	5,945,000	8,029,000
Self insurance reserve			96,530,000	103,198,000	96,530,000	103,198,000
Impaired financing receivable, recorded investment			88,694,000	130,105,000	88,694,000	130,105,000
Total consolidated VIEs assets			652,253,000	929,076,000	652,253,000	929,076,000
Total consolidated VIEs liabilities			84,354,000	149,768,000	84,354,000	149,768,000
Lennar Homebuilding [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt Issuance Cost					26,417,000	$ 28,947,000
Fair value inputs, discount rate						20.00%	20.00%
Finished homes and construction in progress carrying value before impairments			121,693,000	145,284,000
Valuation adjustments to finished homes and CIP			8,061,000	2,934,000
Available-for-sale securities			523,000	480,000	523,000	$ 480,000
Rialto [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt Issuance Cost					3,667,000	6,169,000
Investments held-to-maturity			25,625,000	17,290,000	25,625,000	17,290,000
Principal amount outstanding on loans held-for-sale or securitization or asset-backed financing arrangement			314,315,000	111,775,000	314,315,000	111,775,000
Impaired financing receivable, recorded investment			88,694,000	130,105,000	88,694,000	130,105,000
Lennar Financial Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Available-for-sale securities			42,827,000	16,799,000	42,827,000	16,799,000
Investments held-to-maturity			40,174,000	45,038,000	40,174,000	45,038,000
Self insurance reserve			65,022,000	69,263,000	65,022,000	69,263,000
Principal amount outstanding on loans held-for-sale or securitization or asset-backed financing arrangement			815,004,000	706,011,000	815,004,000	706,011,000
FDIC [Member]
Summary Of Significant Accounting Policies [Line Items]
Managing member equity interests in two limited liability companies		40.00%
Percentage of servicing fee		0.50%
Guaranteed obligations under servicing agreement		$ 10,000,000
Managing member equity interests percentage		60.00%
FDIC [Member] | Rialto [Member]
Summary Of Significant Accounting Policies [Line Items]
Total consolidated VIEs assets			355,204,000	508,362,000	355,204,000	508,362,000
Total consolidated VIEs liabilities			11,257,000	21,549,000	$ 11,257,000	21,549,000
Operating Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					30 years
Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					5 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, discount rate					10.00%
Minimum [Member] | Lennar Homebuilding [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, discount rate					12.00%
Minimum [Member] | Rialto [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, cap rate					8.00%
Minimum [Member] | Furniture, Fixtures And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					2 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, discount rate					20.00%
Maximum [Member] | Lennar Homebuilding [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, discount rate					20.00%
Maximum [Member] | Rialto [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value inputs, cap rate					12.00%
Maximum [Member] | Furniture, Fixtures And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					10 years
Fair Value, Inputs, Level 3 [Member] | Lennar Homebuilding [Member]
Summary Of Significant Accounting Policies [Line Items]
Finished homes and construction in progress carrying value before impairments			19,438,000	8,071,000	$ 59,913,000	8,071,000	$ 16,453,000
Valuation adjustments to finished homes and CIP					12,015,000	3,573,000	4,458,000
Fair Value, Inputs, Level 2 [Member] | Lennar Financial Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Loans held-for-sale			843,252,000	738,396,000	843,252,000	738,396,000
Available-for-sale Securities [Member] | Lennar Financial Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax			$ 39,000	$ 130,000	39,000	130,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax					$ (65,000)	$ 130,000	$ 0

[1] As of November 30, 2015, total liabilities include $84.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $2.0 million is included in Lennar Homebuilding accounts payable, $51.4 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $15.6 million in Lennar Homebuilding other liabilities, $11.3 million in Rialto liabilities and $4.0 million in Lennar Multifamily liabilities.As of November 30, 2014, total liabilities include $149.8 million related to consolidated VIEs as to which there was no recourse against the Company, of which $6.8 million is included in Lennar Homebuilding accounts payable, $45.0 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $61.6 million in Lennar Homebuilding senior notes and other debts payable, $14.8 million in Lennar Homebuilding other liabilities and $21.5 million in Rialto liabilities.