Lennar Homebuilding Investments in Unconsolidated Entities (Balance Sheets) (Details) - Lennar Homebuilding - USD ($) $ in Thousands	Aug. 31, 2017	Nov. 30, 2016
Assets:
Cash and cash equivalents	$ 806,972	$ 221,334
Inventories	3,785,662	3,889,795
Other assets	1,227,756	1,334,116
Total assets	5,820,390	5,445,245
Liabilities and equity:
Accounts payable and other liabilities	697,065	791,245
Debt	754,749	888,664
Equity	4,368,576	3,765,336
Total liabilities and equity	5,820,390	5,445,245
Debt issuance costs	$ 5,425	$ 4,186