Financial Instruments and Fair Value Disclosure (Fair Value Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Nov. 30, 2024	Nov. 30, 2023
Residential Portfolio Segment
Financial Instruments [Line Items]
Aggregate principal balance of loans held-for-sale	$ 2,263,310	$ 2,083,776
Aggregate fair value of loans held-for-sale in excess of principal balance	(62,907)	(10,426)
Commercial Portfolio Segment
Financial Instruments [Line Items]
Aggregate principal balance of loans held-for-sale	50,020	13,650
Aggregate fair value of loans held-for-sale in excess of principal balance	296	(191)
Lennar Other
Financial Instruments [Line Items]
Investments available-for-sale	40,600	38,000
Fair Value, Measurements, Recurring | Financial Services | Level 1 | Forward options
Financial Instruments [Line Items]
Derivative asset	1,458	5,937
Fair Value, Measurements, Recurring | Financial Services | Level 2 | Residential Portfolio Segment
Financial Instruments [Line Items]
Loans held-for-sale	2,200,402	2,073,350
Fair Value, Measurements, Recurring | Financial Services | Level 3
Financial Instruments [Line Items]
Mortgage servicing rights	3,463	3,440
Fair Value, Measurements, Recurring | Financial Services | Level 3 | Commercial Portfolio Segment
Financial Instruments [Line Items]
Loans held-for-sale	50,316	13,459
Fair Value, Measurements, Recurring | Lennar Other | Level 1
Financial Instruments [Line Items]
Investments in equity securities	204,777	176,198
Fair Value, Measurements, Recurring | Lennar Other | Level 3
Financial Instruments [Line Items]
Investments available-for-sale	$ 40,578	$ 37,953