Lennar Homebuilding Senior Notes And Other Debts Payable (Narrative) (Details)	1 Months Ended			3 Months Ended		12 Months Ended
	Mar. 31, 2016 USD ($)	Nov. 30, 2011 USD ($) $ / shares shares	Nov. 30, 2010 USD ($) $ / shares	Feb. 29, 2016 USD ($) $ / shares shares	Feb. 28, 2015 USD ($) $ / shares shares	Nov. 30, 2015 USD ($)	Jun. 29, 2015 USD ($)	Apr. 30, 2015 USD ($)
Debt Instrument [Line Items]
Net proceeds from senior notes				$ (684,000)	$ 249,131,000
Shares included in the calculation of diluted earnings per share | shares				18,620,000	27,375,000
Guarantee by subsidiaries				$ 75,000,000
4.750% Senior Notes Due 2021 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 500,000,000
Interest rate	4.75%
Rate Premium Discount Senior Debt	100.00%
Net proceeds from senior notes	$ 495,850,000
6.50% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Interest rate				6.50%
Senior notes				$ 249,960,000		$ 249,905,000
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				$ 398,644,000		398,194,000
Debt instrument, convertible, conversion ratio		42.5555
Debt conversion, converted instrument, per principal amount		$ 1,000
Debt conversion, converted instrument, shares issued | shares		17,022,200
Debt instrument, convertible, conversion price | $ / shares		$ 23.50
2.75% Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 71,041,000.000		233,893,000.000
Interest rate			2.75%	2.75%
Senior notes				$ 71,041,000		233,225,000
Debt instrument, convertible, conversion ratio			45.1794
Debt conversion, converted instrument, per principal amount			$ 1,000
Debt conversion, converted instrument, shares issued | shares				3,600,000
Debt Conversion, convertible, shares required for conversion at period end | shares				3,209,589.7554
Debt instrument, convertible, conversion price | $ / shares			$ 22.13
Volume weighted average stock price | $ / shares				$ 44.07	$ 45.52
Shares included in the calculation of diluted earnings per share | shares				1,597,000	10,353,000
Minimum Number of Trading Days Out of 30 Over Stock Conversion Price Percentage, Threshold for Conversion			20 days
Minimum Number of Consecutive Trading Days Over Stock Conversion Price Percentage, Threshold for Conversion			30 days
Debt Conversion, Original Debt, Amount				$ 162,852,000
Debt Conversion, Converted Instrument, Amount				163,068,000
Interest period requirement to pay contingent interest			6 days
Consecutive trading days period for contingent interest			5 days
Contingent Interest Amount			0.75%
Debt Instrument, Convertible, Carrying Amount of Equity Component						586,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				1,600,000,000				$ 1,300,000,000
Additional committed borrowing capacity under the credit facility				163,000,000
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				320,000,000
Lennar Homebuilding [Member]
Debt Instrument [Line Items]
Debt Issuance Cost				24,382,000		$ 26,417,000
Outstanding performance and surety bonds				1,313,112,000
Uncompleted site improvements amount				$ 468,809,000
Uncompleted site improvements percent				35.70213%
Lennar Homebuilding [Member] | 6.50% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Interest rate				6.50%		6.50%
Lennar Homebuilding [Member] | 6.50% Senior Notes Due 2016 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate	6.50%
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				$ 245,519,000		$ 236,513,000
Lennar Homebuilding [Member] | Financial Letters Of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding, amount				$ 221,997,000		$ 216,653,000
Lennar Homebuilding [Member] | Bonds [Member]
Debt Instrument [Line Items]
Legal Claims, Letters of Credit and Surety Bonds							$ 223,440,000
Holders Of Debt Instrument [Member] | 2.75% Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Convertible, Terms of Conversion Feature			Holders of the 2.75% Convertible Senior Notes had the right to require the Company to repurchase them for cash equal to 100% of their principal amount, plus accrued but unpaid interest, on December 15, 2015, but none of them elected to do so.
Stock Conversion Price, Minimum Threshold for Conversion			130.00%
Company Conversion Right To Debt Instrument [Member] | 2.75% Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Convertible, Terms of Conversion Feature			The Company has the right to redeem the 2.75% Convertible Senior Notes at any time on or after December 20, 2015 for 100% of their principal amount, plus accrued but unpaid interest.
Stock Conversion Price, Minimum Threshold for Conversion			120.00%