Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	May 31, 2024	Nov. 30, 2023
Level 1 | Lennar Financial Services | Forward options
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Derivative asset	$ 2,768	$ 5,937
Level 1 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments in equity securities	152,946	176,198
Level 3 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,652	3,440
Level 3 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	39,669	37,953
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	1,694,486	2,083,776
Aggregate fair value of loans (below) in excess of principal balance	(39,290)	(10,426)
Residential | Level 1 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,655,196	2,073,350
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	69,700	13,650
Aggregate fair value of loans (below) in excess of principal balance	(2,985)	(191)
Commercial | Level 3 | Lennar Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 66,715	$ 13,459