Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Feb. 28, 2023	Nov. 30, 2022
Level 1 | Financial Services | Forward options
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Derivative asset	$ 6,167	$ 9,473
Level 1 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments in equity securities	189,324	212,981
Level 3 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,450	3,463
Level 3 | Lennar Other
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	36,332	35,482
Residential | Loans held-for-sale | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	1,222,860	1,734,480
Aggregate fair value of loans (below) in excess of principal balance	(15,229)	16,233
Residential | Level 1 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,207,631	1,750,712
Commercial | Loans held-for-sale | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	26,280	24,000
Aggregate fair value of loans (below) in excess of principal balance	(445)	1,599
Commercial | Level 3 | Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 25,835	$ 25,599