Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Aug. 31, 2016		Aug. 31, 2015	Aug. 31, 2016		Aug. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				$ 5,950,072	[1]	$ 5,251,302
Net earnings (including net earnings attributable to noncontrolling interests)	$ 233,131		$ 225,037	602,621		526,538
Employee stock and directors plans				501		(12,727)
Conversions and exchanges of convertible senior notes to Class A common stock				242,406		0
Tax benefit from employee stock plans, vesting of restricted stock and conversions of convertible senior notes				45,803		17,419
Amortization of restricted stock				34,628		32,095
Cash dividends				(26,222)		(24,765)
Receipts related to noncontrolling interests				266		1,475
Payments related to noncontrolling interests				(98,178)		(105,830)
Non-cash distributions to noncontrolling interests				(5,033)
Non-cash consolidations, net				12,478
Non-cash deconsolidations, net						(13,253)
Non-cash activity related to noncontrolling interests				2,480		2,760
Other comprehensive income, net of tax				1,084		(317)
Balance, ending	6,762,906	[1]	5,674,697	6,762,906	[1]	5,674,697
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				2,305,560		2,239,574
Employee stock and directors plans				1,552		1,411
Conversions and exchanges of convertible senior notes to Class A common stock				240,855		(415)
Tax benefit from employee stock plans, vesting of restricted stock and conversions of convertible senior notes				45,803		17,419
Amortization of restricted stock				34,628		32,095
Balance, ending	2,628,398		2,290,084	2,628,398		2,290,084
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				(107,755)		(93,440)
Employee stock and directors plans				(1,175)		(14,259)
Balance, ending	(108,930)		(107,699)	(108,930)		(107,699)
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				39		130
Other comprehensive income, net of tax				1,084		(317)
Balance, ending	1,123		(187)	1,123		(187)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				3,429,736		2,660,034
Net earnings (including net earnings attributable to noncontrolling interests)				598,391		521,291
Cash dividends				(26,222)		(24,765)
Balance, ending	4,001,905		3,156,560	4,001,905		3,156,560
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				301,128		424,282
Net earnings (including net earnings attributable to noncontrolling interests)				4,230		5,247
Receipts related to noncontrolling interests				266		1,475
Payments related to noncontrolling interests				(98,178)		(105,830)
Non-cash distributions to noncontrolling interests				(5,033)
Non-cash consolidations, net				12,478
Non-cash deconsolidations, net						(13,253)
Non-cash activity related to noncontrolling interests				2,480		2,760
Balance, ending	217,371		314,681	217,371		314,681
Class A Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				18,066		17,424
Employee stock and directors plans				124		121
Conversions and exchanges of convertible senior notes to Class A common stock				1,551		415
Balance, ending	19,741		17,960	19,741		17,960
Class B Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				3,298		3,298
Balance, ending	$ 3,298		$ 3,298	$ 3,298		$ 3,298

[1] As of August 31, 2016, total liabilities include $136.8 million related to consolidated VIEs as to which there was no recourse against the Company, of which $2.7 million is included in Lennar Homebuilding accounts payable, $108.4 million in Lennar Homebuilding liabilities related to consolidated inventory not owned, $1.7 million in Lennar Homebuilding other liabilities, $12.1 million in Rialto liabilities and $11.9 million in Lennar Multifamily liabilities.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.