Supplemental Financial Information (Condensed Consolidating Statement Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	May 31, 2012		May 31, 2011		May 31, 2012		May 31, 2011
Condensed Financial Statements, Captions [Line Items]
Total revenues	$ 930,155	[1]	$ 764,493	[1]	$ 1,655,011	[1]	$ 1,322,538	[1]
Corporate general and administrative	29,168		20,598		56,010		43,950
Total costs and expenses	861,823		740,509		1,566,745		1,296,503
Other interest expense	(23,803)		(22,468)		(48,652)		(44,547)
Earnings (loss) before income taxes	52,103		25,800		58,556		62,121
Benefit for income taxes	402,321		(953)		403,845		1,452
Equity in earnings from subsidiaries
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	454,424		24,847		462,401		63,573
Less: Net earnings (loss) attributable to noncontrolling interests	1,721	[2]	11,062	[2]	(5,270)	[2]	22,382	[2]
Net earnings attributable to Lennar	452,703		13,785		467,671		41,191
Lennar Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenues
Corporate general and administrative	27,980		19,184		53,479		41,415
Total costs and expenses	27,980		19,184		53,479		41,415
Other interest expense	(1,452)		(1,453)		(2,889)		(13,218)
Earnings (loss) before income taxes	(29,637)		(21,159)		(56,650)		(45,479)
Benefit for income taxes	(1,848)		10,598		10,761		23,707
Equity in earnings from subsidiaries	484,188		24,346		513,560		62,963
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	452,703		13,785		467,671		41,191
Less: Net earnings (loss) attributable to noncontrolling interests
Net earnings attributable to Lennar	452,703		13,785		467,671		41,191
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenues	844,053		681,016		1,502,631		1,173,967
Corporate general and administrative
Total costs and expenses	761,557		649,233		1,377,111		1,119,223
Other interest expense	(23,803)		(22,468)		(48,652)		(44,547)
Earnings (loss) before income taxes	62,274		21,445		85,648		60,961
Benefit for income taxes	411,101		(6,759)		405,067		(16,560)
Equity in earnings from subsidiaries	10,813		9,660		22,845		18,562
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	484,188		24,346		513,560		62,963
Less: Net earnings (loss) attributable to noncontrolling interests
Net earnings attributable to Lennar	484,188		24,346		513,560		62,963
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenues	90,552		87,947		161,147		167,687
Corporate general and administrative
Total costs and expenses	75,088		74,577		141,751		150,898
Other interest expense
Earnings (loss) before income taxes	19,466		25,514		29,558		46,639
Benefit for income taxes	(6,932)		(4,792)		(11,983)		(5,695)
Equity in earnings from subsidiaries
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	12,534		20,722		17,575		40,944
Less: Net earnings (loss) attributable to noncontrolling interests	1,721		11,062		(5,270)		22,382
Net earnings attributable to Lennar	10,813		9,660		22,845		18,562
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenues	(4,450)		(4,470)		(8,767)		(19,116)
Corporate general and administrative	1,188		1,414		2,531		2,535
Total costs and expenses	(2,802)		(2,485)		(5,596)		(15,033)
Other interest expense	1,452		1,453		2,889		13,218
Earnings (loss) before income taxes
Benefit for income taxes
Equity in earnings from subsidiaries	(495,001)		(34,006)		(536,405)		(81,525)
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(495,001)		(34,006)		(536,405)		(81,525)
Less: Net earnings (loss) attributable to noncontrolling interests
Net earnings attributable to Lennar	(495,001)		(34,006)		(536,405)		(81,525)
Lennar Homebuilding [Member]
Condensed Financial Statements, Captions [Line Items]
Real estate revenue	808,088		662,476		1,432,521		1,129,185
Lennar Homebuilding, Cost and expenses	731,842		630,711		1,316,587		1,078,474
Equity in earnings (loss) from unconsolidated entities	(9,381)		2,417		(8,298)		11,078
Other income (expense), net	12,758	[3]	9,511	[3]	16,825	[3]	39,471	[3]
Lennar Homebuilding [Member] | Lennar Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Real estate revenue
Lennar Homebuilding, Cost and expenses
Equity in earnings (loss) from unconsolidated entities
Other income (expense), net	(205)		(522)		(282)		9,154
Lennar Homebuilding [Member] | Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Real estate revenue	808,088		648,315		1,432,116		1,107,272
Lennar Homebuilding, Cost and expenses	726,156		614,224		1,306,666		1,048,444
Equity in earnings (loss) from unconsolidated entities	(9,186)		2,629		(8,045)		11,312
Other income (expense), net	12,767		9,501		16,825		39,452
Lennar Homebuilding [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Real estate revenue			14,161		405		21,913
Lennar Homebuilding, Cost and expenses	3,479		17,884		7,854		33,519
Equity in earnings (loss) from unconsolidated entities	(195)		(212)		(253)		(234)
Other income (expense), net
Lennar Homebuilding [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Real estate revenue
Lennar Homebuilding, Cost and expenses	2,207		(1,397)		2,067		(3,489)
Equity in earnings (loss) from unconsolidated entities
Other income (expense), net	196		532		282		(9,135)
Lennar Financial Services [Member]
Condensed Financial Statements, Captions [Line Items]
Financial Services Revenue	88,595		59,422		156,810		117,135
Lennar Financial Services, Cost and expenses	70,615		56,927		130,580		113,457
Lennar Financial Services [Member] | Lennar Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Financial Services Revenue
Lennar Financial Services, Cost and expenses
Lennar Financial Services [Member] | Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Financial Services Revenue	35,965		32,701		70,515		66,695
Lennar Financial Services, Cost and expenses	35,479		35,009		70,445		70,779
Lennar Financial Services [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Financial Services Revenue	57,080		31,191		95,062		69,556
Lennar Financial Services, Cost and expenses	41,411		24,420		70,329		56,757
Lennar Financial Services [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Financial Services Revenue	(4,450)		(4,470)		(8,767)		(19,116)
Lennar Financial Services, Cost and expenses	(6,275)		(2,502)		(10,194)		(14,079)
Rialto Investments [Member]
Condensed Financial Statements, Captions [Line Items]
Rialto Investments, Revenues	33,472		42,595		65,680		76,218
Rialto Investments, Cost and expenses	30,198		32,273		63,568		60,622
Equity in earnings (loss) from unconsolidated entities	5,569		(2,973)		24,027		1,552
Other income (expense), net	(1,372)		15,329		(13,612)		28,532
Less: Net earnings (loss) attributable to noncontrolling interests	3,200		12,900		(1,200)		24,800
Rialto Investments [Member] | Lennar Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Rialto Investments, Revenues
Rialto Investments, Cost and expenses
Equity in earnings (loss) from unconsolidated entities
Other income (expense), net
Rialto Investments [Member] | Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Rialto Investments, Revenues
Rialto Investments, Cost and expenses	(78)
Equity in earnings (loss) from unconsolidated entities
Other income (expense), net
Rialto Investments [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Rialto Investments, Revenues	33,472		42,595		65,680		76,218
Rialto Investments, Cost and expenses	30,198		32,273		63,568		60,622
Equity in earnings (loss) from unconsolidated entities	5,569		(2,973)		24,027		1,552
Other income (expense), net	(1,372)		15,329		(13,612)		28,532
Rialto Investments [Member] | Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Rialto Investments, Revenues
Rialto Investments, Cost and expenses	78
Equity in earnings (loss) from unconsolidated entities
Other income (expense), net

[1] Total revenues are net of sales incentives of $95.3 million ($29,800 per home delivered) and $179.7 million ($31,700 per home delivered), respectively, for the three and six months ended May 31, 2012, compared to $89.9 million ($33,900 per home delivered) and $152.8 million ($33,500 per home delivered), respectively, for the three and six months ended May 31, 2011.

[2] Net earnings (loss) attributable to noncontrolling interests for the three and six months ended May 31, 2012 includes $3.2 million and ($1.2) million, respectively, of earnings (loss) related to the FDIC’s interest in the portfolio of real estate loans that the Company acquired in partnership with the FDIC. Net earnings (loss) attributable to noncontrolling interests for the three and six months ended May 31, 2011 includes $12.9 million and $24.8 million, respectively, of earnings related to the FDIC’s interest in the portfolio of real estate loans that the Company acquired in partnership with the FDIC.

[3] Lennar Homebuilding other income, net includes $8.4 million of valuation adjustments to the Company’s investments in Lennar Homebuilding’s unconsolidated entities for the six months ended May 31, 2011.