Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($)		3 Months Ended
	Feb. 10, 2023	Feb. 28, 2023		Nov. 30, 2022		Aug. 31, 2022	May 31, 2022	Feb. 28, 2022	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		$ 24,240,367,000	[1]				$ 20,847,432,000	$ 20,996,282,000
Net earnings (including net earnings attributable to noncontrolling interests)		599,308,000						509,315,000
Employee stock and directors plans		(66,990,000)						(54,886,000)
Purchases of treasury stock		(190,931,000)						(526,361,000)
Amortization of restricted stock		86,558,000						81,457,000
Cash dividends		(107,891,000)						(110,122,000)
Receipts related to noncontrolling interests		2,497,000						6,984,000
Payments related to noncontrolling interests		(21,256,000)						(59,388,000)
Non-cash purchase or activity of noncontrolling interests, net		12,774,000						1,124,000
Total other comprehensive income, net of tax		851,000						3,027,000
Balance, ending		24,555,287,000	[1]	$ 24,240,367,000	[1]			$ 20,847,432,000
Cash dividend paid (in dollars per share)	$ 0.375			$ 0.375		$ 0.375	$ 0.375	$ 0.375
Stock repurchase program, authorized value									$ 2,000,000,000
Stock repurchase program, authorized shares (in shares)									30,000,000
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		5,417,796,000					$ 8,855,151,000	$ 8,807,891,000
Employee stock and directors plans		(189,000)						(140,000)
Amortization of restricted stock		86,558,000						81,457,000
Non-cash purchase or activity of noncontrolling interests, net		(376,000)						(34,057,000)
Balance, ending		5,503,789,000		$ 5,417,796,000				8,855,151,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		(210,389,000)					(3,290,748,000)	(2,709,448,000)
Employee stock and directors plans		(67,027,000)						(54,939,000)
Purchases of treasury stock		(190,931,000)						(526,361,000)
Balance, ending		(468,347,000)		(210,389,000)				(3,290,748,000)
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		2,408,000					1,686,000	(1,341,000)
Total other comprehensive income, net of tax		851,000						3,027,000
Balance, ending		3,259,000		2,408,000				1,686,000
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		18,861,417,000					15,078,788,000	14,685,329,000
Net earnings (including net earnings attributable to noncontrolling interests)		596,534,000						503,581,000
Cash dividends		(107,891,000)						(110,122,000)
Balance, ending		19,350,060,000		18,861,417,000				15,078,788,000
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		139,867,000					168,368,000	179,857,000
Net earnings (including net earnings attributable to noncontrolling interests)		2,774,000						5,734,000
Receipts related to noncontrolling interests		2,497,000						6,984,000
Payments related to noncontrolling interests		(21,256,000)						(59,388,000)
Non-cash purchase or activity of noncontrolling interests, net		13,150,000						35,181,000
Balance, ending		$ 137,032,000		139,867,000				$ 168,368,000
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased during period (in shares)		1,446,205						4,616,000
Total purchase price		$ 143,068,000						$ 472,924,000
Average share price of shares repurchased (in dollars per share)		$ 98.93						$ 102.45
Common Class A | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		$ 25,608,000					30,243,000	$ 30,050,000
Employee stock and directors plans		226,000						193,000
Balance, ending		$ 25,834,000		25,608,000				$ 30,243,000
Common Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased during period (in shares)		553,795						652,000
Total purchase price		$ 46,105,000						$ 53,331,000
Average share price of shares repurchased (in dollars per share)		$ 83.25						$ 81.80
Common Class B | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning		$ 3,660,000					$ 3,944,000	$ 3,944,000
Balance, ending		$ 3,660,000		$ 3,660,000				$ 3,944,000

[1] As of February 28, 2023, total liabilities include $580.0 million related to consolidated VIEs as to which there was no recourse against the Company, of which $64.4 million is included in Homebuilding accounts payable, $477.6 million in Homebuilding liabilities related to consolidated inventory not owned, $30.1 million in Homebuilding senior notes and other debts payable, $2.1 million in Homebuilding other liabilities, $3.7 million in Multifamily liabilities and $2.1 million in Lennar Other liabilities.As of November 30, 2022, total liabilities include $620.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $66.9 million is included in Homebuilding accounts payable, $510.9 million in Homebuilding liabilities related to consolidated inventory not owned, $29.4 million in Homebuilding senior notes and other debt payable, $7.2 million in Homebuilding other liabilities, $3.8 million in Multifamily liabilities and $2.2 million in Lennar Other liabilities.