Lennar Homebuilding Senior Notes And Other Debts Payable (Narrative) (Details) (USD $)	3 Months Ended		1 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Nov. 30, 2011	Nov. 30, 2010	Feb. 11, 2015	Nov. 30, 2014
Debt Instrument [Line Items]
Net proceeds from senior notes	$ 249,131,000	$ 496,305,000
Shares included in the calculation of diluted earnings per share	27,375,000	25,670,000
Guarantee by subsidiaries	75,000,000
4.50% Senior Notes Due 2019 Issued in 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount					250,000,000	350,000,000
Interest rate						4.50%
Rate Premium Discount Senior Debt					100.25%	100.00%
Net proceeds from senior notes	596,400,000
Senior notes	600,625,000					350,000,000
3.25% Convertible Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	400,000,000					400,000,000
Interest rate	3.25%		3.25%
Senior notes	400,000,000					400,000,000
Debt instrument, convertible, conversion ratio			42.5555
Debt conversion, converted instrument, per principal amount			1,000
Debt conversion, converted instrument, shares issued			17,022,200
Debt instrument, convertible, conversion price			$ 23.50
2.75% Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	446,000,000					446,000,000
Interest rate	2.75%			2.75%
Senior notes	434,494,000					431,042,000
Debt instrument, convertible, conversion ratio				45.1794
Debt conversion, converted instrument, per principal amount				1,000
Debt conversion, converted instrument, shares issued				20,150,012
Debt instrument, convertible, conversion price				$ 22.13
Volume weighted average stock price	$ 45.52	$ 38.78
Shares included in the calculation of diluted earnings per share	10,400,000	8,600,000
Debt instrument, unamortized discount	11,500,000					15,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,500,000,000
Additional committed borrowing capacity under the credit facility	248,000,000
Line of credit facility, capacity available for specific purpose other than for trade purchases	500,000,000
Letter of Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility current borrowing capacity	315,000,000
Lennar Homebuilding [Member]
Debt Instrument [Line Items]
Outstanding performance and surety bonds	934,200,000
Uncompleted site improvements amount	472,400,000
Uncompleted site improvements percent	50.56754%
Lennar Homebuilding [Member] | 4.50% Senior Notes Due 2019 Issued in 2014 [Member]
Debt Instrument [Line Items]
Interest rate	4.50%					4.50%
Lennar Homebuilding [Member] | 3.25% Convertible Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Interest rate	3.25%					3.25%
Lennar Homebuilding [Member] | 2.75% Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Interest rate	2.75%					2.75%
Lennar Homebuilding [Member] | Performance Letters of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding, amount	239,000,000					234,100,000
Lennar Homebuilding [Member] | Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 186,600,000					$ 190,400,000