Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($)			3 Months Ended
	Apr. 07, 2020	Feb. 07, 2020	Feb. 29, 2020		Nov. 30, 2019		Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Jan. 31, 2019	Dec. 01, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 16,033,830,000	[1]				$ 14,893,695,000	$ 14,682,957,000
Net earnings (including net loss attributable to noncontrolling interests)			391,223,000						239,424,000
Employee stock and directors plans			(7,424,000)						(1,422,000)
Purchases of treasury stock			(288,515,000)						(46,998,000)
Amortization of restricted stock			31,855,000						16,899,000
Cash dividends			(39,240,000)						(12,860,000)
Receipts related to noncontrolling interests			88,913,000						8,348,000
Payments related to noncontrolling interests			(16,734,000)						(11,297,000)
Non-cash consolidations, net			(485,000)						8,894,000
Cumulative Effect of New Accounting Principle in Period of Adoption											$ 9,542,000
Total other comprehensive loss, net of tax			(46,000)						208,000
Balance, ending			16,193,377,000	[1]	$ 16,033,830,000	[1]			$ 14,893,695,000
Cash dividends (in dollars per share)		$ 0.125			$ 0.04		$ 0.04	$ 0.04	$ 0.04
Stock repurchase program, authorized value										$ 1,000,000,000
Stock repurchase program, authorized shares (in shares)										25,000,000
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			8,578,219,000					$ 8,514,301,000	$ 8,496,677,000
Employee stock and directors plans			(130,000)						725,000
Amortization of restricted stock			31,855,000						16,899,000
Cumulative Effect of New Accounting Principle in Period of Adoption											0
Balance, ending			8,609,944,000		$ 8,578,219,000				8,514,301,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			(957,857,000)					(485,016,000)	(435,869,000)
Employee stock and directors plans			(7,384,000)						(2,149,000)
Purchases of treasury stock			(288,515,000)						(46,998,000)
Cumulative Effect of New Accounting Principle in Period of Adoption											0
Balance, ending			(1,253,756,000)		(957,857,000)				(485,016,000)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			498,000					(158,000)	(366,000)
Cumulative Effect of New Accounting Principle in Period of Adoption											0
Total other comprehensive loss, net of tax			(46,000)						208,000
Balance, ending			452,000		498,000				(158,000)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			8,295,001,000					6,724,242,000	6,487,650,000
Net earnings (including net loss attributable to noncontrolling interests)			398,452,000						239,910,000
Employee stock and directors plans									0
Cash dividends			(39,240,000)						(12,860,000)
Cumulative Effect of New Accounting Principle in Period of Adoption											9,542,000
Balance, ending			8,654,213,000		8,295,001,000				6,724,242,000
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			84,313,000					106,881,000	101,422,000
Net earnings (including net loss attributable to noncontrolling interests)			(7,229,000)						(486,000)
Receipts related to noncontrolling interests			88,913,000						8,348,000
Payments related to noncontrolling interests			(16,734,000)						(11,297,000)
Non-cash consolidations, net			(485,000)						8,894,000
Cumulative Effect of New Accounting Principle in Period of Adoption											0
Balance, ending			$ 148,778,000		84,313,000				$ 106,881,000
Class A Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased during period (in shares)			4,250,000						1,000,000
Shares repurchased during period, value			$ 282,274,000						$ 46,998,000
Average share price of shares repurchased (in dollars per share)			$ 66.42						$ 46.98
Class A Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 29,712,000					29,501,000	$ 29,499,000
Employee stock and directors plans			90,000						2,000
Cumulative Effect of New Accounting Principle in Period of Adoption											0
Balance, ending			$ 29,802,000		29,712,000				$ 29,501,000
Class B Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased during period (in shares)			115,000						0
Shares repurchased during period, value			$ 6,155,000						$ 0
Average share price of shares repurchased (in dollars per share)			$ 53.52						$ 0
Class B Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 3,944,000					$ 3,944,000	$ 3,944,000
Cumulative Effect of New Accounting Principle in Period of Adoption											$ 0
Balance, ending			$ 3,944,000		$ 3,944,000				$ 3,944,000
Subsequent Event
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends (in dollars per share)	$ 0.125

[1] Under certain provisions of ASC 810, the Company is required to separately disclose on its condensed consolidated balance sheets the assets owned by consolidated VIEs and liabilities of consolidated VIEs as to which neither Lennar Corporation, or any of its subsidiaries, has any obligations. As of February 29, 2020, total liabilities include $669.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $8.9 million is included in Homebuilding accounts payable, $353.5 million in Homebuilding liabilities related to consolidated inventory not owned, $68.3 million in Homebuilding senior notes and other debts payable, $8.9 million in Homebuilding other liabilities, $218.5 million in Financial Services liabilities and $11.3 million in Multifamily liabilities. As of November 30, 2019, total liabilities include $549.7 million related to consolidated VIEs as to which there was no recourse against the Company, of which $13.7 million is included in Homebuilding accounts payable, $247.5 million in Homebuilding liabilities related to consolidated inventory not owned, $47.1 million in Homebuilding senior notes and other debt payable, $8.9 million in Homebuilding other liabilities, $231.1 million in Financial Services liabilities and $1.4 million in Multifamily liabilities.