Supplemental Financial Information (Narrative) (Details) - USD ($)	9 Months Ended
	Aug. 31, 2016	Mar. 31, 2016	Nov. 30, 2015
Senior Notes | 12.25% senior notes due 2017
Debt Instrument [Line Items]
Interest rate	12.25%
Senior Notes | 4.75% senior notes due 2017
Debt Instrument [Line Items]
Interest rate	4.75%
Senior Notes | 6.95% senior notes due 2018
Debt Instrument [Line Items]
Interest rate	6.95%
Senior Notes | 4.125% senior notes due 2018
Debt Instrument [Line Items]
Interest rate	4.125%
Senior Notes | 4.500% senior notes due 2019
Debt Instrument [Line Items]
Interest rate	4.50%
Senior Notes | 4.50% senior notes due 2019
Debt Instrument [Line Items]
Interest rate	4.50%
Senior Notes | 3.25% convertible senior notes due 2021
Debt Instrument [Line Items]
Interest rate	3.25%
Senior Notes | 4.750% senior notes due 2021
Debt Instrument [Line Items]
Interest rate	4.75%
Senior Notes | 4.750% senior notes due 2022
Debt Instrument [Line Items]
Interest rate	4.75%
Senior Notes | 4.875% senior notes due 2023
Debt Instrument [Line Items]
Interest rate	4.875%
Senior Notes | 4.750% senior notes due 2025
Debt Instrument [Line Items]
Interest rate	4.75%
Lennar Homebuilding
Debt Instrument [Line Items]
Guarantee by subsidiaries	$ 75,000,000
Lennar Homebuilding | 12.25% senior notes due 2017
Debt Instrument [Line Items]
Interest rate	12.25%		12.25%
Lennar Homebuilding | 4.75% senior notes due 2017
Debt Instrument [Line Items]
Interest rate	4.75%		4.75%
Lennar Homebuilding | 6.95% senior notes due 2018
Debt Instrument [Line Items]
Interest rate	6.95%		6.95%
Lennar Homebuilding | 4.125% senior notes due 2018
Debt Instrument [Line Items]
Interest rate	4.125%		4.125%
Lennar Homebuilding | 4.500% senior notes due 2019
Debt Instrument [Line Items]
Interest rate	4.50%		4.50%
Lennar Homebuilding | 4.50% senior notes due 2019
Debt Instrument [Line Items]
Interest rate	4.50%		4.50%
Lennar Homebuilding | 3.25% convertible senior notes due 2021
Debt Instrument [Line Items]
Interest rate	3.25%		3.25%
Lennar Homebuilding | 4.750% senior notes due 2021
Debt Instrument [Line Items]
Interest rate	4.75%		4.75%
Lennar Homebuilding | 4.750% senior notes due 2022
Debt Instrument [Line Items]
Interest rate	4.75%		4.75%
Lennar Homebuilding | 4.875% senior notes due 2023
Debt Instrument [Line Items]
Interest rate	4.875%		4.875%
Lennar Homebuilding | 4.750% senior notes due 2025
Debt Instrument [Line Items]
Interest rate	4.75%		4.75%
Lennar Homebuilding | Senior Notes | 3.25% convertible senior notes due 2021
Debt Instrument [Line Items]
Interest rate	3.25%
Lennar Homebuilding | Senior Notes | 4.750% senior notes due 2021
Debt Instrument [Line Items]
Interest rate		4.75%