Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	May 31, 2022	Nov. 30, 2021
Level 1 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments in equity securities	$ 400,401	$ 906,539
Level 3 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,221	2,492
Level 3 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	34,822	41,654
Residential | Loans held-for-sale | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	1,165,423	1,586,764
Aggregate fair value of loans (below) in excess of principal balance	22,483	49,519
Residential | Level 2 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,187,906	1,636,283
Commercial | Loans held-for-sale | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	84,650	0
Aggregate fair value of loans (below) in excess of principal balance	(445)	68
Commercial | Level 3 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 84,205	$ 68