Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Feb. 28, 2025	Nov. 30, 2024
Level 1 | Lennar Financial Services | Forward options
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Derivative asset	$ 2,693	$ 1,458
Level 1 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments in equity securities	112,154	204,777
Level 3 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,297	3,463
Level 3 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	40,401	40,578
Residential | Loans held-for-sale | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	1,785,606	2,263,310
Aggregate fair value of loans (below) in excess of principal balance	(32,503)	(62,907)
Residential | Level 1 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,753,103	2,200,402
Commercial | Loans held-for-sale | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	83,075	50,020
Aggregate fair value of loans (below) in excess of principal balance	(281)	296
Commercial | Level 3 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 82,794	$ 50,316