Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Nov. 30, 2017
Rialto | Fair Value, Measurements, Recurring | RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	$ 125,500	$ 235,400
Aggregate fair value of loans (below) in excess of principal balance	(2,100)	(1,000)
Rialto | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	123,398	234,403
Rialto | Fair Value, Measurements, Recurring | Credit default swaps | Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	1,084	995
Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	57,768	57,439
Lennar Financial Services | Mortgage loan commitments
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	11,700	9,900
Lennar Financial Services | Forward contracts
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset		1,700
Financial liability	(4,800)
Lennar Financial Services | Fair Value, Measurements, Recurring | RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	676,800	908,800
Aggregate fair value of loans (below) in excess of principal balance	12,400	28,700
Lennar Financial Services | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	57,768	57,439
Lennar Financial Services | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	689,172	937,516
Lennar Financial Services | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	36,772	31,163
Lennar Financial Services | Fair Value, Measurements, Recurring | Mortgage loan commitments | Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	11,654	9,873
Lennar Financial Services | Fair Value, Measurements, Recurring | Forward contracts | Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Forward contracts	$ 4,844	$ 1,681