Financial Instruments and Fair Value Disclosures - (Fair Value Assets Measured On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Rialto
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Impaired loans receivable, carrying value	$ 0	$ 31,550
Impaired loans receivable, fair value	0	18,885
Impaired loans receivable, total gains (losses)	0	(12,665)
REO, net: Upon acquisition/transfer, carrying value	0	8,850
REO, net: Upon acquisition/transfer, fair value	0	8,394
REO, net: Upon acquisition/transfer, total gains (losses)	0	(456)
REO, net: Upon management periodic valuation, carrying value	16,453	52,425
REO, net: Upon management periodic valuation, fair value	10,968	40,096
REO, net: Upon management periodic valuation, total gains (losses)	(5,485)	(12,329)
Lennar Homebuilding
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Land and land under development, carrying value	52,929	0
Land and land under development, fair value	43,565	0
Land and land under development, total gains (losses)	$ (9,364)	$ 0